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[Info] Possible fix for I/O issues

Here's a nice thread about a possible solution for I/O issues/bottleneck.The topic is for the Transformer Prime but i guess the devs in here will also found interesting infos.

Pretoriano80 said:
Here's a nice thread about a possible solution for I/O issues/bottleneck.The topic is for the Transformer Prime but i guess the devs in here will also found interesting infos.
Click to expand...
Click to collapse
What issues? I don't experience any issues anymore with the .26 update. I am rooted and unlocked, but I haven't done anything to improve on that part. In .22 it was quite necessary, but ASUS has done a good job with .26.

+1
It's been pretty OK since the update.
And I don't think that moving all data to an external microSD card is such a good idea, I'd rather depend on internal storage, I want my SD to be totally removable.
I'd like to know more about this SQL patch though, but they don't provide much info really.
BTW, there's a typo in your link (no colon after http).

firetech said:
What issues? I don't experience any issues anymore with the .26 update. I am rooted and unlocked, but I haven't done anything to improve on that part. In .22 it was quite necessary, but ASUS has done a good job with .26.
Click to expand...
Click to collapse
I agree with you, my tablet also work quiet nice with .26 but if you look at the benchmarks the internal storage on our tablet is very slow compared with other old and new devices.
With the above kernel mode we could use external storage for /DATA and /CACHE partition and gain a substantial speed increase.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app

d14b0ll0s said:
+1
It's been pretty OK since the update.
And I don't think that moving all data to an external microSD card is such a good idea, I'd rather depend on internal storage, I want my SD to be totally removable.
I'd like to know more about this SQL patch though, but they don't provide much info really.
BTW, there's a typo in your link (no colon after http).
Click to expand...
Click to collapse
Here's more info regarding that sql patch

Pretoriano80 said:
Here's more info regarding that sql patch
Click to expand...
Click to collapse
Ok, so this simply disables fsync, not something I'll be doing anytime soon, at least until the reboot issues are completely solved (I'll be happy with 30 days uptime).
Plus, this is not the greatest idea on a device that had some I/O issues, as it seems sync is even more needed with it.

I don't think the infinity needs an external SD card, it's fast enough and even scoring better than his prime with external SD card.
This is my stock infinity:

That's not really testing the part that fails horribly though. Where our storage performs miserably is random writes. It's around 40-50 IOPS and under 200kB/s. Absolutely ridiculous for a flagship device.
http://forum.xda-developers.com/showpost.php?p=29660695&postcount=25

I'm amazed that folks are happy with the performance on .26. It is better than .22 but performance is still pretty terrible for me compared to my other devices. If you guys use Browser2ram or disable fsync in sqlite you'll realize just how slow this thing still is. In my opinion, buying a fast microSD card(harder than you think for random access) and moving /data and /cache is the best option.

I am noticing pretty slow browsing, pages load terribly slowly. I've tried chrome, Firefox and built in browser. While I agree there has been some improvement, i still get pretty noticeable stutters in ICS.
I mean this tablet has pretty much the best specs on the market...quad core, clocked @ 1.6 and a gig of ram with a substantial internal hd. It would seem to me that there is still a lot of untapped horse power.
That said, early adopters of new technology should often expect some quirks at the beginning, i know i did. Asus has always been great about getting updates out fast for other hardware i have purchased.
I personally feel that with a little patience, we will not only get our fixes and jelly bean, but some great devs making new ROM'S that will really showcase the performance we can expect from this device.
Sent from my ASUS Transformer Pad TF700T using xda premium

urrlyx said:
That's not really testing the part that fails horribly though. Where our storage performs miserably is random writes. It's around 40-50 IOPS and under 200kB/s. Absolutely ridiculous for a flagship device.
http://forum.xda-developers.com/showpost.php?p=29660695&postcount=25
Click to expand...
Click to collapse
But it's not getting better with the partition moving?! Haven't seen a single Androbench screenshot which shows a big improvement on random writes.

paysen said:
But it's not getting better with the partition moving?! Haven't seen a single Androbench screenshot which shows a big improvement on random writes.
Click to expand...
Click to collapse
Which is why we don't think moving it helps at all.

urrlyx said:
Which is why we don't think moving it helps at all.
Click to expand...
Click to collapse
So why are you quoting my post with the benchmark where I say that moving to the SD card wouldn't be helpful for the TF700? :angel:

paysen said:
So why are you quoting my post with the benchmark where I say that moving to the SD card wouldn't be helpful for the TF700? :angel:
Click to expand...
Click to collapse
Only because that benchmark doesn't show the problem in question. Wasn't trying to disagree with you. =)

urrlyx said:
Only because that benchmark doesn't show the problem in question. Wasn't trying to disagree with you. =)
Click to expand...
Click to collapse
Thats what I misunderstood :silly: So when moving to a fast sd card won't help - maybe a software fix can help there to boost it up :fingers-crossed:

Im not complaining cause i fricking love this tablet but shouldnt these issues been caught during development and testing by Asus? I understand a few small issues may slip through but not something as glaring as some of the I/O problems. Did they not download and install an app while multitasking? lol. Dont get me wrong i am in no way bashing them and would still buy this tablet if i could do it over again.... I'm just not very familiar with the [email protected] process for something like this. Do they just accept a few flaws in order to bring it to market as soon as possible and work hard to push updates?
Sent from my unlocked and rooted TF700T using the XDA Premium App

cctaylor410 said:
Im not complaining cause i fricking love this tablet but shouldnt these issues been caught during development and testing by Asus? I understand a few small issues may slip through but not something as glaring as some of the I/O problems. Did they not download and install an app while multitasking? lol. Dont get me wrong i am in no way bashing them and would still buy this tablet if i could do it over again.... I'm just not very familiar with the [email protected] process for something like this. Do they just accept a few flaws in order to bring it to market as soon as possible and work hard to push updates?
Sent from my unlocked and rooted TF700T using the XDA Premium App
Click to expand...
Click to collapse
To be honest this is 1 million dollars question but only Asus (QA department maybe?) can answer. Anyway they already did a good job with the latest update and compared with previous firmwares the tablet is much better and the lag issue many users seems to be gone.
The bad part is the internal memory overall performance because imo that is just poor hardware quality and you don't expect to have such a poor hardware on a high-end device like that.
So if Asus doesn't prove the contrary (but i hope they do) this become a pure hw design flaw and there's not much we could do about it... we will have a nice "bottleneck" on this tablet.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2

The poor random I/O performance is not limited to the Infinity. The entire line of Transformer tablets is plagued with this issue. Most likely Asus is just making a poor choice when they choose their emmc chips. Part of the problem is that emmc is the same stuff that goes into a sdcard and sdcards are generally designed with fast sequential performance with little regard for IOPs and random performance since most sdcards end up in cameras where most files are 1MB+ in size and you're usually only writing one file at a time.

I think Dees_Troy is correct, we just don't really have a full fledged SSD controller in tablets yet
The controller is more like the first gen ssd controllers that we had for sdd hdds
I guess with software optimization by ordering as much as possible the access and maybe caching more in the normal ram it could be a bit better
But in the end i think it is just pure hardware, we don't have Marvel or Sandforge ssd level controllers yet in tablets, that would make a bit more expensive and power hungry i guess.
Verstuurd van mijn ASUS Transformer Pad TF700T met Tapatalk

The sad part is my laptop HDD (not SSD) has 10 times Infinity's random write and one would expect more from a flash chip.

Is this tablet really this slow and buggy? Worth rooting?

I just bought this device as a toy and a test as a computer tablet. I found it to be slow and buggy. I do notice that in browsing heavy pages like the real facebook page it IS faster than my Galaxy Note 1 but in almost everything else, the Note is faster and snappier. I have disabled lots of apps, resett it, no change. So my question, I guess this one is really worth rooting and installing a good rom Im used to the Cyanogen to my phones, is Cyanogen working good for this tablet?
Im still marveled by the quality of the screen, I dont think I ever have seen such a good screen! If I just now could get it working somewhat near as good as my Note 1 I will be a happy panda
Thanx in advance peeps

My experience is that it is NOT slow and buggy.
I could compare it with an iPad3 last week and I think they are very close.
You can't compare it with a note because due to the much higher resolution the gpu has to do so much more computing. That is why the nexus7 is faster than the tf700 due to it's smaller screen AND resolution

hobs0n said:
I just bought this device as a toy and a test as a computer tablet. I found it to be slow and buggy. I do notice that in browsing heavy pages like the real facebook page it IS faster than my Galaxy Note 1 but in almost everything else, the Note is faster and snappier. I have disabled lots of apps, resett it, no change. So my question, I guess this one is really worth rooting and installing a good rom Im used to the Cyanogen to my phones, is Cyanogen working good for this tablet?
Im still marveled by the quality of the screen, I dont think I ever have seen such a good screen! If I just now could get it working somewhat near as good as my Note 1 I will be a happy panda
Thanx in advance peeps
Click to expand...
Click to collapse
I'm on stock rom with browser2ram and force2gpu enabled. My table is very fast. Just remember before you flash a new rom, just do factory reset(data wipe 3 times). Also root is good (allow you to install rooted app like Titinium backup, SetcPU etc..), but don't unlock unless absolutely necessary (void your warranty), or you have time or like to play with custom rom.

Ok, sounds like I will root it then and try to tweak it, Im not satisfied with the speed with it sofar. Its seems stable now after I resetted it, before the reset, it crasched 2-10 times a day. My idea was that since the GPU and CPU is older in the Note, The Tegra 3 would be able to handle the FullHD resolution but it doesnt seem to .. I definatly want a ROM without the garbage crap
I plan to use it to write alot on, can you recommend a good office app? Or a browser that google docs work good with
Is games running good for you?? The new demanding ones I tried before resetting was really slow and laggy.
Thanx for the replys, I hope I get this baby running smoother

hobs0n said:
Ok, sounds like I will root it then and try to tweak it, Im not satisfied with the speed with it sofar. Its seems stable now after I resetted it, before the reset, it crasched 2-10 times a day. My idea was that since the GPU and CPU is older in the Note, The Tegra 3 would be able to handle the FullHD resolution but it doesnt seem to .. I definatly want a ROM without the garbage crap
I plan to use it to write alot on, can you recommend a good office app? Or a browser that google docs work good with
Is games running good for you?? The new demanding ones I tried before resetting was really slow and laggy.
Thanx for the replys, I hope I get this baby running smoother
Click to expand...
Click to collapse
Yes, all games, videos, pictures, and documents and apps are function normally. There are 3 most popular office apps:
1. Documents to go (this can view google docs also. Paid version only)
2. Kingsoft office
3. Polaris office (currently polaris has a bug with fonts).
My stock browser can view google docs fine. I think stock browser is the best in my opinion (have tried boat, chrome, mozilla etc...)

hobs0n said:
My idea was that since the GPU and CPU is older in the Note, The Tegra 3 would be able to handle the FullHD resolution but it doesnt seem to .. I definatly want a ROM without the garbage crap
Click to expand...
Click to collapse
The Infinity's performance is not CPU bound and is not due to the higher res. It's I/O limited. The CPU is plenty fast enough. As soon as the memory config requires the system to start hitting the /sdcard memory, the system will be subject to random stuttering/pausing because the sdcard memory is the cheapest, slowest, crappiest flash RAM ASUS could find.
This is why stuff like browser2ram is seen as a huge boost for people that do a lot of browsing and it is also why the stuttering varies from user to user/session to session since the RAM situation in the system varies from config to config and moment to moment during use. Some users who's config has a lot of free DRAM and do not frequently use stuff that hits the sdcard partition hard, see almost no performance issues with the tablet.

zenaxe said:
The Infinity's performance is not CPU bound and is not due to the higher res. It's I/O limited. The CPU is plenty fast enough. As soon as the memory config requires the system to start hitting the /sdcard memory, the system will be subject to random stuttering/pausing because the sdcard memory is the cheapest, slowest, crappiest flash RAM ASUS could find.
This is why stuff like browser2ram is seen as a huge boost for people that do a lot of browsing and it is also why the stuttering varies from user to user/session to session since the RAM situation in the system varies from config to config and moment to moment during use. Some users who's config has a lot of free DRAM and do not frequently use stuff that hits the sdcard partition hard, see almost no performance issues with the tablet.
Click to expand...
Click to collapse
Well,
I guess I'm going to do the downgrade to ICS .30\root\then try the rootkreeper deal back to Belly Jean.
I really don't want to go thru all this, but if I want to keep chipping away trying to find a better Android experience then so be it.
Pain in the ass...

Thanx for the info! That was my biggest thoughts about the Infinity, "is the RAM enough?" and it isnt but then Ill just have to multitask less and try to tweak it. And perhaps dont install multipicture wallpaper.. but thats one of the things that I love about my Note
buhoitr: thanx for the suggestions, Ill try them and see
What rom would you suggest for getting the most out of the Infinity?
zenaxe said:
The Infinity's performance is not CPU bound and is not due to the higher res. It's I/O limited. The CPU is plenty fast enough. As soon as the memory config requires the system to start hitting the /sdcard memory, the system will be subject to random stuttering/pausing because the sdcard memory is the cheapest, slowest, crappiest flash RAM ASUS could find.
This is why stuff like browser2ram is seen as a huge boost for people that do a lot of browsing and it is also why the stuttering varies from user to user/session to session since the RAM situation in the system varies from config to config and moment to moment during use. Some users who's config has a lot of free DRAM and do not frequently use stuff that hits the sdcard partition hard, see almost no performance issues with the tablet.
Click to expand...
Click to collapse

hobs0n said:
I just bought this device as a toy and a test as a computer tablet. I found it to be slow and buggy. I do notice that in browsing heavy pages like the real facebook page it IS faster than my Galaxy Note 1 but in almost everything else, the Note is faster and snappier. I have disabled lots of apps, resett it, no change. So my question, I guess this one is really worth rooting and installing a good rom Im used to the Cyanogen to my phones, is Cyanogen working good for this tablet?
Im still marveled by the quality of the screen, I dont think I ever have seen such a good screen! If I just now could get it working somewhat near as good as my Note 1 I will be a happy panda
Thanx in advance peeps
Click to expand...
Click to collapse
Hmmm, I've found mine to be quick and virtually bug-free, but then again I didn't buy it as a toy.

A little tweaking and I wouldn't call it slow. Even stock its a solid piece of equipment.
Apply data2sd mod built for CleanROM 2 after installing the ROM. You'll need a fast sd card.
Research the threads. The blob for data2sd for that ROM was just posted today.
look at my I/O!
Sent from my ASUS Transformer Pad TF700T using xda app-developers

I own both the Infinity and the Acer a700 and after the a700 got JB earlier today, I will say that the Infinity lags more than the a700 (and I was very happy with the Infinity). Colour me shocked.

The only time I really ever experience any lag or sluggishness is when browsing. I will be rooting once there is a method discovered for Jelly Bean on the Infinity. I'd really like to give browser2ram a shot. I've heard it does wonders for browsing.
Sent from my ASUS Transformer Pad TF700T

Better than ever
Before i say thing, I will list the important things about my tablet - C7 model, Has been repaired for speaker issues & Jelly bean 4.1.1. I'd say TF700T is a powerful device, It lacks the software for it. I use to notice quiet a bit of lag on ICS but after upgraded to Jelly bean, It's faster than ever! I would even compare it to iPad 3:laugh: I'm running Stock Jelly bean with a bit of removing apps here and there.
I Don't know why everyone is having problems with such a decent device.

ExjeetzZ said:
Before i say thing, I will list the important things about my tablet - C7 model, Has been repaired for speaker issues & Jelly bean 4.1.1. I'd say TF700T is a powerful device, It lacks the software for it. I use to notice quiet a bit of lag on ICS but after upgraded to Jelly bean, It's faster than ever! I would even compare it to iPad 3:laugh: I'm running Stock Jelly bean with a bit of removing apps here and there.
I Don't know why everyone is having problems with such a decent device.
Click to expand...
Click to collapse
I you guys would read the Development section (read the newer threads, please) you would see that CleanROM2.2 has pretty much completely eliminated the lag and i/o issues. It's reason enough to root and unlock. This tablet is a beast when it is allowed to begin to reach its full potential.

okantomi said:
I you guys would read the Development section (read the newer threads, please) you would see that CleanROM2.2 has pretty much completely eliminated the lag and i/o issues. It's reason enough to root and unlock. This tablet is a beast when it is allowed to begin to reach its full potential.
Click to expand...
Click to collapse
Im rooted and installed CleanRom2.2 this morning and it is indeed faster and smoother i will try the tweaking you guys suggested later. It still lagged when i downloaded my spotify playlists while i was downloading youtube movies tho

okantomi said:
I you guys would read the Development section (read the newer threads, please) you would see that CleanROM2.2 has pretty much completely eliminated the lag and i/o issues. It's reason enough to root and unlock. This tablet is a beast when it is allowed to begin to reach its full potential.
Click to expand...
Click to collapse
I think CleanROM 2.2 is the route I'm going to go too...that's if I can figure out how to do it without asking a bunch of dumbs**t questions.
Still reading about it in development.
I'm getting more and more disappointed with this TF700T each time I turn it on lately...
Did really dig it for a while...not anymore

Will i unlock? No...
Thats OK said:
I think CleanROM 2.2 is the route I'm going to go too...that's if I can figure out how to do it without asking a bunch of dumbs**t questions.
Still reading about it in development.
I'm getting more and more disappointed with this TF700T each time I turn it on lately...
Did really dig it for a while...not anymore
Click to expand...
Click to collapse
If it was really laggy and something that i can't deal with i would unlock but since it feels flawless, I might stay. I don't give a crap about their warranty but i do care for my device (brick)

ExjeetzZ said:
I use to notice quiet a bit of lag on ICS but after upgraded to Jelly bean, It's faster than ever!
Click to expand...
Click to collapse
It's the total opposite for me. ICS was fast and virtually lag-free. The latest updates to Jellybean my Infinity lags like nobody's business. Very disappointing. Looks like root'n'rom time.

buhohitr said:
I'm on stock rom with browser2ram and force2gpu enabled.
Click to expand...
Click to collapse
What is force2gpu?
(google seems to give irrelevant results).
Thx

squigs said:
What is force2gpu?
(google seems to give irrelevant results).
Thx
Click to expand...
Click to collapse
If I may attempt an answer,
I believe that's a reference to the "force gpu rendering" in settings under developer options.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2

[Q] To Data2SD or not to Data2SD...

I have read a lot of the I/O bottleneck problems about the TF700, and using Data2SD is the best alternative the development has to offer to solve this.
The question I have of concern is whether I should do this now or later? I have gotten myself a new replacement of the TF700, and successfully rooted, unlocked, and Inherited the Clean ROM Inheritance. Doing this is something I'm not sure I want to do now considering the internal is still running pretty okay right now.
If I do wait it out and then decide to do this, would it be too late? I'm just wondering would I get optimal speed of performance once utilize the Data2SD after the degradation of the internal?
Thanks.

GigaSPX said:
I have read a lot of the I/O bottleneck problems about the TF700, and using Data2SD is the best alternative the development has to offer to solve this.
The question I have of concern is whether I should do this now or later? I have gotten myself a new replacement of the TF700, and successfully rooted, unlocked, and Inherited the Clean ROM Inheritance. Doing this is something I'm not sure I want to do now considering the internal is still running pretty okay right now.
If I do wait it out and then decide to do this, would it be too late? I'm just wondering would I get optimal speed of performance once utilize the Data2SD after the degradation of the internal?
Thanks.
Click to expand...
Click to collapse
Personally I think CROMI with browser2ram resolves most io problems.

GigaSPX said:
If I do wait it out and then decide to do this, would it be too late?
Click to expand...
Click to collapse
No, you can switch to it whenever you want in the future without any restrictions.

Sbdags and _that are much, much more knowledgeable than teeny me, but I also think CROMI currently solves most problems that the 700 had at launch time. Some I/O issue will remain under the surface, but it's been fair sailing so far for me (admittedly, I did not have that much issue with it anyway ).
I tried getting data2sd to work -- curiosity finally won over cautiousness -- but I could not, for the love of all that is holy, get it work properly, at least not in the first six tries. Minitool ruined my microSD card, although Gparted was able to recover it. <phew> I then proceeded to install data2sd. Although apparently correctly installed, I noticed very little benefit.
As I said, it could be speculated that my microSD card is screwy (I'm shopping around for a new Sandisk 32 or 64 GB Class 10), and I would have nothing to base a denial on. A better card might have shown a tremendous degree of improvement, making me use my 700 so intensely that I'd drain all available power from the one nuclear power station in the Netherlands, making it melt-down all the way to China, making them retaliate, thus ending the world a few days late.
I doubt the latter, however, and will stick with CROMI as it is. Just great.

I use my tabby for the internet. Mail, youtube, browsing. Clean Rom and browser2ram has eliminated my io troubles. In fact, i'm running CR 2.72 and haven't bothered to upgrade because i just don't feel the need.
Plenty of folks have had luck with data2sd. I was not one of them. With two different cards, i had similiar results. It wouldn't run reliably for more than an hour.

Ologn said:
I use my tabby for the internet. Mail, youtube, browsing. Clean Rom and browser2ram has eliminated my io troubles. In fact, i'm running CR 2.72 and haven't bothered to upgrade because i just don't feel the need.
Plenty of folks have had luck with data2sd. I was not one of them. With two different cards, i had similiar results. It wouldn't run reliably for more than an hour.
Click to expand...
Click to collapse
Probably not done right. I could do data2sd over and over again with my eyes closed and worked everytime!

i luv d2sd
buhohitr said:
Probably not done right. I could do data2sd over and over again with my eyes closed and worked everytime!
Click to expand...
Click to collapse
haha, i even used minitools and it still worked!...
i am still using the tweaked recovery from fordwolden's thread and luv it!
downloading 2gb games and still surfin, grab a torrent,update apps,blah,blah..
yeh,sometimes you go too far and stop for 5sec: overall :good:
mine is permanent and just waiting for cards to catch up to ram/bus/cpu ,etc

I can now look into this, as my 64GB UHS-1 Sandisks arrived yesterday. They're now installed in the Infinity, and I want to play.
Soon enough, though, I might unlock and try Cromi....
Sent from my ASUS Transformer Infinity TF700 running Android JB (rooted) via Tapatalk

I'm somewhat convinced about using CROMI. I've tried browsing around, and I'm not sure I'm getting anywhere with finding a thread that discloses all details about it. If someone can link me the details, I would really appreciate it!

GigaSPX said:
I'm somewhat convinced about using CROMI. I've tried browsing around, and I'm not sure I'm getting anywhere with finding a thread that discloses all details about it. If someone can link me the details, I would really appreciate it!
Click to expand...
Click to collapse
Here you go bro: http://forum.xda-developers.com/showthread.php?t=2049274

GigaSPX said:
I have read a lot of the I/O bottleneck problems about the TF700, and using Data2SD is the best alternative the development has to offer to solve this.
The question I have of concern is whether I should do this now or later? I have gotten myself a new replacement of the TF700, and successfully rooted, unlocked, and Inherited the Clean ROM Inheritance. Doing this is something I'm not sure I want to do now considering the internal is still running pretty okay right now.
If I do wait it out and then decide to do this, would it be too late? I'm just wondering would I get optimal speed of performance once utilize the Data2SD after the degradation of the internal?
Thanks.
Click to expand...
Click to collapse
I still get lag when downloading apps in particular when its trying to install after it downloads. Also transition lag in opening apps is still there as well as scrolling though the recent app list but mainly when youre in the home screen or again while apps are installing. Games still lag as well from time to time. But games do open faster.
The only advantage I see with the data2sd is app opens slightly faster like heavy HD games. IMO data2sd is not a must if you're already running CROMI as it doesn't make a lot of difference.
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD

aznmode said:
I still get lag when downloading apps in particular when its trying to install after it downloads. Also transition lag in opening apps is still there as well as scrolling though the recent app list but mainly when youre in the home screen or again while apps are installing. Games still lag as well from time to time. But games do open faster.
The only advantage I see with the data2sd is app opens slightly faster like heavy HD games. IMO data2sd is not a must if you're already running CROMI as it doesn't make a lot of difference.
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD
Click to expand...
Click to collapse
I felt pretty newbie asking about what CROMI is when I didn't realize it stands for Clean ROM Inheritance. Not only that, but I also have Browser2RAM installed not too long ago.
Anyway, I really don't have any HD Games to boot into my tablet yet since I don't see a lot of choices offered in my interest. If doing data2sd really isn't of importance, then I guess my question is resolved. Thanks guys!

Possible I/O lagfix (from nexus 7/OneX forums)

http://forum.xda-developers.com/showthread.php?t=2104326
Hi,
Saw this on reddit this morning, as no one's posted it yet I'd just like to offer it up as another potential lag-fixer.
The source of the problem is that internal storage is not properly TRIMmed when needed. You can find lots of information on XDA - http://forum.xda-developers.com/show....php?t=1971852 and http://forum.xda-developers.com/show....php?t=1929021 for example. It is also well-known fact that running fstrim Linux tool from time to time fixes the issue until internal memory runs out of free blocks. Other solutions like mounting with -discard or disabling fsync may be dangerous.
LagFix is a user-friendly implementation of fstrim utility. It allows you to select which partitions to trim (you should leave defaults unless you know what you are doing) and run the process easily.
Please note that fstrim output depends on kernel and device. It works fine unless you see errors. You might see big amounts of bytes, zero amount or repeating amount. All are fine! Read fstrim manual to understand why all these outputs are valid.
It is also advised to reboot your device after the TRIM process so that kernel could reinitialize block data.
App is free and is available in Play Market. Current version is 1.0.
P.S. If your ROM mounts /data with -discard then this app is NOT needed! Mounting with -discard causes brickbug on some devices, so I DO NOT advise using -discard.
Click to expand...
Click to collapse
Link on Play: https://play.google.com/store/apps/details?id=com.grilledmonkey.lagfix
I applied it on my rooted, locked tf700 and, well, nothing bad happened. I am on the .25 update, which I feel made overall app-opening a little smoother, so I can't tell if this makes any noticeable difference, but it certainly doesn't seem slower after applying it. The dev says that if you run androbench after applying the fix i/o read should be higher, if anyone could run a few benchmarks of before/after it would be appreciated! I've never really placed much faith in benchmarks so didn't bother doing it myself.
Hope this benefits someone!
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD

I downloaded and installed it. Ran it, rebooted. It did trim, but the jury is still out on whether this actually helps or not. It's too freshly booted to really judge the effects properly, so I'll have it settle in and report back.
It didn't break my 700 -- that's a good thing to start with.

MartyHulskemper said:
I downloaded and installed it. Ran it, rebooted. It did trim, but the jury is still out on whether this actually helps or not. It's too freshly booted to really judge the effects properly, so I'll have it settle in and report back.
It didn't break my 700 -- that's a good thing to start with.
Click to expand...
Click to collapse
Yeah, I was reluctant to be the first one to try it on an infinity... But it worked out for the better, I think. Now I don't know if the .25 jb update or this is to thank for the better performance. It should hope up till the 4.2 update at least! Quite pleased with the .25 update
Sent from my Galaxy Nexus using Tapatalk 2

Just tried it. Could be my imagination, but my tablet seems snappier.

I am not convinced that it will have any effect: TF700's Hynix eNAND flash is eMMC 4.41 compliant, which does not have DISCARD command, the equivalent of SATA's TRIM command. The DISCARD command is supported in eMMC 4.51 compliant flash but I don't know if the Kingston flash in Nexus 7 is eMMC 4.51 compliant. Even if it does TRIM the TF700, probably it will have little effect if you have alot of free space left as it does not affect the garbage collection significantly. One would hope that TRIM should already be done dynamically within the file management software as it would reduce write amplification factor, hence improve write speed performance?

Kraka said:
I am not convinced that it will have any effect: TF700's Hynix eNAND flash is eMMC 4.41 compliant, which does not have DISCARD command, the equivalent of SATA's TRIM command.
Click to expand...
Click to collapse
According to the spec, eMMC 4.41 supports TRIM - what's the difference between TRIM and DISCARD?
I read that eMMC 4.41 also supports "background operation" and "high priority interrupt" - these sound much more interesting related to lag than TRIM. Do you have any idea if these features are already used in the TF700's Linux kernel (or even at all in any kernel)?

faq in op link said:
Which devices are affected?
It is known by now, that Nexus S, Galaxy Nexus, Nexus 7, Nexus 4, Nexus 10 and HTC One X need regular trimming. It is also believed that all pre-ICS devices used different memory and they do NOT need it nor support it. Pre-ICS support will be dropped in version 1.2. Other 4.0+ devices? Well, test it! And report if it really helps - your device will be added to the list.
How to properly test it?
Use AndroBench app before using LagFix and after. You only need micro test. Look for Sequential Write values. Reading from memory is NOT affected, because reading does not involve writting and only writting triggers search party for free memory blocks.
Click to expand...
Click to collapse
For anyone looking for early confirmation of impact.
I think I'll give this a try. I have some hefty typing lag. I thought one of the first updates had gotten rid of it, but it came back, it was just temporarily relieved by the fresh reboot then. If it does help, it'll probably be a month before I confirm anything, just to avoid giving/having false hope . Thanks for posting op hope it works.
Edit, sorry, just noticed OP already mentioned androbench.
Edit 2: Saw no change in my androbench write speed. Sequential write was something over 5MB/s, random write was .15MB/s both before and after running it, and again after rebooting. lagfix claimed to have trimmed successfully. If anything, it felt more laggy for a while after running it. I'm an OS update or two behind FWIW, just installed Jelly Bean a month or so ago. I like to let everyone else test the updates before I install them. I'll probably run another bench this evening. :shrug:

fsTRIM = AWESOME fix - on CROMI, OCed kernel, fsync disabled
I just download the fsTRIM app and it worked with CROMI, OCed kernel, and fsync disabled. Will seem laggy right after runnng it, just reboot as soon as you do and things will be deffinitely running smoother and slightly faster now. Noticing less keyboard latency even as I type this out. I suggest trying it out.
UPDATE - Seriously try this **** out. Keyboard typing is radically smoother in browser, evernote, and google drive. Less latency between multi touch gestures ive set up in GMD Gesture Control as well. App opening is still instantaneous. Loading big web pages is definitely quicker. Will time boot and other things and update again soon.
Update - Opening large files and youtube is faster. large pdfs load faster. everything is really....snappy, and.....smooth.....best of both worlds. things were already pretty snappy and smooth with CROMI, didnt think they could get better but it has. I time everything as well to compare. I could barely time it after this fix as everything is basically instantaneous. Havent tried writing/moving large files on internal storage yet, will test soon, this is distracting me from my homework too much lol.

It works for me I can now download files and move them without having my tablet unusable until it's done.
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD

Just installed this.
Will give it a go...

lucius.zen said:
...
Click to expand...
Click to collapse
You posted the same content in two other thread sof you own making, and in this one. One helluva way to get to 2000 posts without interjecting anything actually useful. Neitehr is this post, I will mention myself, but please keep a lower profile next time.

So far I haven't noticed any difference at all. I'll give it the rest of the day and if I don't feel there is any change I'll just uninstall.

newest and most stable stock-android-alike ROM with keyboard dock support for TF700T?

Greetings fellow Infinity owners! I am a new owner of this amazing tablet ever since I bought it from my friend for $250 this evening. I don't know if it's a good deal but as for now I'm pretty happy with it, and looking forward to be even more happier when I install custom ROM in it.
I have been a loyal user of CyanogenMod ROMs, but considering this device is unique (mainly because of its dock), I would like to know whether CM ROMs are compatible to use with the dock. Or maybe there's even better ROM out there for this tablet? As for now I don't have the dock but I'm thinking of buying it next month.
Please share your thoughts and suggestions (if any)!

The only rom fully compatible with the dock is CROMi-X 5.4 since it's based on the Asus stock rom.
The CM based roms like CM11 and CROMBi-KK work with most dock functions, but there are bugs, e.g.
If you use the Volume buttons on the dock, the tablet's power button stops working.
If you close the lid of the tablet/dock combo the screen does not turn off as it would with CROMi-X.
Development on CROmi-X is stuck since Asus did not release new firmware after JB 4.2.1.
CM and CROMbi-KK are at JB 4.4.3

berndblb said:
The only rom fully compatible with the dock is CROMi-X 5.4 since it's based on the Asus stock rom.
The CM based roms like CM11 and CROMBi-KK work with most dock functions, but there are bugs, e.g.
If you use the Volume buttons on the dock, the tablet's power button stops working.
If you close the lid of the tablet/dock combo the screen does not turn off as it would with CROMi-X.
Development on CROmi-X is stuck since Asus did not release new firmware after JB 4.2.1.
CM and CROMbi-KK are at JB 4.4.3
Click to expand...
Click to collapse
If you had to pick one of those 3, what would be the most stable in terms of performance?
I flashed mine to the latest snapshot version of CM11 last night. Though it's newer, it's not necessarily faster than the stock Asus 4.2.1 firmware, I can say the performance has been very bad. So I went on and try the nightly version, which did not change anything in the big picture: it's still sluggish.
I haven't tried CROMi or CROMbi, but assuming CROMbi is based on CM11, is it safe to say that it's just as sluggish as CM11 itself?

Anggrian said:
If you had to pick one of those 3, what would be the most stable in terms of performance?
Click to expand...
Click to collapse
Usually there is a trade-off between stable and fast.
Anggrian said:
I flashed mine to the latest snapshot version of CM11 last night. Though it's newer, it's not necessarily faster than the stock Asus 4.2.1 firmware, I can say the performance has been very bad. So I went on and try the nightly version, which did not change anything in the big picture: it's still sluggish.
Click to expand...
Click to collapse
Details? How do you measure performance?

_that said:
Usually there is a trade-off between stable and fast.
Click to expand...
Click to collapse
With that consideration, which is the fastest and most pleasant to use?
_that said:
Details? How do you measure performance?
Click to expand...
Click to collapse
I measure performance by how smooth the OS navigation is.
Which in this case, is very poor. First off, swiping pages in Google Now Launcher is far from smooth, especially swiping the most left to Google Now interface, sometimes it freezes on the way. Capacitive buttons (back, home, recent apps) take 1-3 seconds to react, which is also the same amount of delay needed to open Settings. Lastly, even pulling notification bar isn't always smooth.
If you're interested, I could shoot a quick video to show how painful the navigation is. In a way I also wonder if this level of performance is normal in TF700T.
Anyway, as been told by other threads, I wiped dalvik cache and cache while in CWM recovery, issue remains.

The TF700T has never been the fastest or smoothest of its generation, but it should not be painful to use.
Try installing CROM(b)i - it has a lot of performance tweaks.

Anggrian said:
With that consideration, which is the fastest and most pleasant to use?
I measure performance by how smooth the OS navigation is.
Which in this case, is very poor. First off, swiping pages in Google Now Launcher is far from smooth, especially swiping the most left to Google Now interface, sometimes it freezes on the way. Capacitive buttons (back, home, recent apps) take 1-3 seconds to react, which is also the same amount of delay needed to open Settings. Lastly, even pulling notification bar isn't always smooth.
If you're interested, I could shoot a quick video to show how painful the navigation is. In a way I also wonder if this level of performance is normal in TF700T.
Anyway, as been told by other threads, I wiped dalvik cache and cache while in CWM recovery, issue remains.
Click to expand...
Click to collapse
Whenever you switch roms, no matter if they share the same base, wiping of cache and dalvik is not enough. You have to clean install, meaning at least a factory wipe in recovery, if you really want to experience the potential (or lack of thereof) of that rom.
I do not experience the lag you describe on the latest CROMBi-KK install and I did not on CROMi-X either. But then - I don't even install Google Now and other "social" cr*** - so YMMV.
CROMBi-KK is the fastest and smoothest rom I have run on this tablet, but it does have the dock bugs I mentioned earlier.
_that is right - there's always a trade off between reliability and speed.
Try the CROMi roms (either X or KK) and install them with fsync off and I bet most of your complaints will be gone. The biggest performance boost for this tablet (with it's build-in slow memory) is to run it with fsync off or data2sd on a fast microSD. If you want full dock compatability it's CROMi-X, if you want KitKat goodness it's CROMBi-KK.
Have fun testing!

berndblb said:
Whenever you switch roms, no matter if they share the same base, wiping of cache and dalvik is not enough. You have to clean install, meaning at least a factory wipe in recovery, if you really want to experience the potential (or lack of thereof) of that rom.
I do not experience the lag you describe on the latest CROMBi-KK install and I did not on CROMi-X either. But then - I don't even install Google Now and other "social" cr*** - so YMMV.
CROMBi-KK is the fastest and smoothest rom I have run on this tablet, but it does have the dock bugs I mentioned earlier.
_that is right - there's always a trade off between reliability and speed.
Try the CROMi roms (either X or KK) and install them with fsync off and I bet most of your complaints will be gone. The biggest performance boost for this tablet (with it's build-in slow memory) is to run it with fsync off or data2sd on a fast microSD. If you want full dock compatability it's CROMi-X, if you want KitKat goodness it's CROMBi-KK.
Have fun testing!
Click to expand...
Click to collapse
Informative! Will try CROMi-X tonight!
Oh 1 more thing, I am currently in CWM recovery, do I need to switch to TWRP recovery to install CROMi or CWM does just well?

Anggrian said:
Informative! Will try CROMi-X tonight!
Oh 1 more thing, I am currently in CWM recovery, do I need to switch to TWRP recovery to install CROMi or CWM does just well?
Click to expand...
Click to collapse
As long as it is CWM 6.0.4.6. or later (and you don't want to try the f2fs file system on /data) you're ok.
---------- Post added at 12:24 AM ---------- Previous post was at 12:21 AM ----------[/SIZE
Edit: I do run the rom with internal data formatted to f2fs. It does make a difference.... For f2fs you need TWRP 2.7.1.1

berndblb said:
As long as it is CWM 6.0.4.6. or later (and you don't want to try the f2fs file system on /data) you're ok.
---------- Post added at 12:24 AM ---------- Previous post was at 12:21 AM ----------[/SIZE
Edit: I do run the rom with internal data formatted to f2fs. It does make a difference.... For f2fs you need TWRP 2.7.1.1
Click to expand...
Click to collapse
I had no idea what f2fs is so I went on and googled it. According to this thread: http://forum.xda-developers.com/showthread.php?t=2681775, it can cause data loss on the exchange of performance gain.
Based on your experience on f2fs, what do you have to say about that?
Sent from my Nexus 5 using XDA Free mobile app

Anggrian said:
I had no idea what f2fs is so I went on and googled it. According to this thread: http://forum.xda-developers.com/showthread.php?t=2681775, it can cause data loss on the exchange of performance gain.
Based on your experience on f2fs, what do you have to say about that?
Click to expand...
Click to collapse
I can confirm the performance gain (subjectively - hard to really measure it except with benchmarks. And I don't believe in those...) and I haven't had any data loss - yet
I treat any data on a mobile device as being just one step away from going down the drain - it happens often enough. If you want to try anything experimental, a solid backup/sync routine is a must in my book.
f2fs and also fsync off both fall into that category. I have run my tablets with fsync off for more than a year without any problem, but I have less experience with f2fs.
You just gotta be careful. I wouldn't try, let's say, ART runtime AND flash the new Asus apps package on CROMBi-KK with /data formatted to f2fs - risks grow exponentially if you combine them.....

Anggrian said:
Greetings fellow Infinity owners! I am a new owner of this amazing tablet ever since I bought it from my friend for $250 this evening. I don't know if it's a good deal but as for now I'm pretty happy with it, and looking forward to be even more happier when I install custom ROM in it.
I have been a loyal user of CyanogenMod ROMs, but considering this device is unique (mainly because of its dock), I would like to know whether CM ROMs are compatible to use with the dock. Or maybe there's even better ROM out there for this tablet? As for now I don't have the dock but I'm thinking of buying it next month.
Please share your thoughts and suggestions (if any)!
Click to expand...
Click to collapse
Try the Techfusion+ Rom and install Asus keyboard and Keyboard Manager manually. It is 4.4.3, very fast and doesnt get laggy over time. Best thing us Battery life, which is far better than on the other ROMs