[Q] Phone lag almost unusable due to IOWAIT - General Questions and Answers

I have an older phone (HTC Desire Z / Vision) which is still usable, but it has been extremely slow lately. When I say slow, I mean that applications take 10-30 seconds to open and I often get "application is not responding, force close / wait" windows pop up. I thought it was slow CPU speed, but after running top I find that the problem is spending too much time in IOWAIT status. CPU is overclocked to 1.5 GHz, I am running Cyanogen 7 (newer won't run on this hardware). I ran some benchmarks and got these numbers for disk access speed:
Internal storage write: 3.18 Mbytes/sec
Internal storage read: 15.5 Mbytes/sec
External storage write: 2.69 Mbytes/sec
External storage read: 16.7 Mbytes/sec
Is this especially slow? Is it causing the problem? If not, then what else could be causing the problem, and how could I fix it?

gromky said:
I have an older phone (HTC Desire Z / Vision) which is still usable, but it has been extremely slow lately. When I say slow, I mean that applications take 10-30 seconds to open and I often get "application is not responding, force close / wait" windows pop up. I thought it was slow CPU speed, but after running top I find that the problem is spending too much time in IOWAIT status. CPU is overclocked to 1.5 GHz, I am running Cyanogen 7 (newer won't run on this hardware). I ran some benchmarks and got these numbers for disk access speed:
Internal storage write: 3.18 Mbytes/sec
Internal storage read: 15.5 Mbytes/sec
External storage write: 2.69 Mbytes/sec
External storage read: 16.7 Mbytes/sec
Is this especially slow? Is it causing the problem? If not, then what else could be causing the problem, and how could I fix it?
Click to expand...
Click to collapse
Probably might need to just do a factory reset to get rid of all the clutter on the device. Also it maybe because the phone is running out of available ram. Also since you're running a custom rom and most likely a custom kernel try this http://forum.xda-developers.com/showthread.php?t=2416441 and yes it is meant for pretty much every phone.

obscuresword said:
Probably might need to just do a factory reset to get rid of all the clutter on the device. Also it maybe because the phone is running out of available ram. Also since you're running a custom rom and most likely a custom kernel try this http://forum.xda-developers.com/showthread.php?t=2416441 and yes it is meant for pretty much every phone.
Click to expand...
Click to collapse
The phone isn't running out of available RAM, Android's memory management does a good job of keeping RAM clear for use by programs. At any rate, a reboot clears all RAM but doesn't fix the slowness issue. It's that the CPU is spending far too much time in IOWAIT state, which means waiting for disk access.

gromky said:
The phone isn't running out of available RAM, Android's memory management does a good job of keeping RAM clear for use by programs. At any rate, a reboot clears all RAM but doesn't fix the slowness issue. It's that the CPU is spending far too much time in IOWAIT state, which means waiting for disk access.
Click to expand...
Click to collapse
In my opinion Android does a pretty horrible job at memory management. Also I said factory reset and not a reboot. Factory reset usually fixes 90% of the problems that may occur in android.

gromky said:
I have an older phone (HTC Desire Z / Vision) which is still usable, but it has been extremely slow lately. When I say slow, I mean that applications take 10-30 seconds to open and I often get "application is not responding, force close / wait" windows pop up. I thought it was slow CPU speed, but after running top I find that the problem is spending too much time in IOWAIT status. CPU is overclocked to 1.5 GHz, I am running Cyanogen 7 (newer won't run on this hardware). I ran some benchmarks and got these numbers for disk access speed:
Internal storage write: 3.18 Mbytes/sec
Internal storage read: 15.5 Mbytes/sec
External storage write: 2.69 Mbytes/sec
External storage read: 16.7 Mbytes/sec
Is this especially slow? Is it causing the problem? If not, then what else could be causing the problem, and how could I fix it?
Click to expand...
Click to collapse
Use Seeder
http://forum.xda-developers.com/showthread.php?t=1987032

prantoroy said:
Use Seeder
http://forum.xda-developers.com/showthread.php?t=1987032
Click to expand...
Click to collapse
Amazing! I don't know what that did, but my phone now loads Google Maps in less than 5 seconds! It used to be 30 at least and always get the Wait/Force Close window! Good job, Bangladesh!

gromky said:
Amazing! I don't know what that did, but my phone now loads Google Maps in less than 5 seconds! It used to be 30 at least and always get the Wait/Force Close window! Good job, Bangladesh!
Click to expand...
Click to collapse
Thank You For Your Appreciation.
:good:

Well, it appears I spoke too soon. Seeder helped my phone run well for about two hours. After that, it went right back to being slow again. Very disappointing, I thought I had this solved.
What else can I do? Other than a hard reset, which frankly I doubt will fix this problem.

If I did a hard reset, would it fix the lag problem? What are my other options?

Related

Do I have a memory leak problem?

Can someone tell me if I have a memory leak problem? Here's what I'm seeing. When I do a soft boot, and load into WM6, batterystatus reports 25.8 MB of free program memory. I'm using pocket plus, so mostly I close applications when I'm done using them, thus nothing is usually left open. As time goes on, what I see is a constant, but slow decrease in available program memory. In about a 24 hr period, I can lose up to 5-7MB. Does that sound like a memory leak, or is that just how WM operates?
I had a similar problem running WeatherPanel. My device kept creating new files, instead of update the exisiting one, in Data folder, after applied an "updated" to correct the moon issue. This killed my device since the main memory would eventually run into almost 0.
I reinstalled the application to storage card and switched back to the original dll file. So far I have not get any problem yet.

DON'T do this.. it may help!

Hola....
I have the TP now 4 like 3 weeks....
In the beginning I installed a lot of programs on my STORAGE CARD!
After the installation I had a lot of problems with my device...like the broken screen issue...and the grey stripes....phone flippin...crashing....thinghs like that.
BUT then I did a hardware reset....took the easy way...
setting->system-> erase content..
After my reset I installed all the programs I installed before...
programs like advanced config, diamond tweak,, coreplayer,klaxon, tomtom etc...
BUT the difference was that I installed everything on my phone....
It worked great 4 me!
I never have issues with my phone anymore....
Everything runs smooth!
so DON'T install programs on your card...
It helped me....maybe it is gonna help you!
you might be on to something here!
thanx for sharing.
With the HUGE amount of storage on-board there's really no need to install programs to the storage card anyway. Plus stuff runs faster from internal storage and is still available if the card is ever removed, or if you connect to a PC in DISK DRIVE mode (which makes the storage card unavailable to the phone's OS).
Basically, always use internal storage until you start getting low, then use the storage card, but only for programs you use rarely.
Incidentally I think Tomtom always installs to the storage card, I don't recall ever having a choice to put it into internal storage.
Now that you mention after my "grey screen" issue i've never installed anything on my storage card and my TP is running fine ever since.
I never thought i could be something so simple and like Jim Coleman mentioned with that much memory on the device who needs the storage card for installations anymore
Great finding pensador
P.S. I will publish this on the wiki at the know issue's section
I have everything installed on my phone, and not the card (except TomTom) and I had the broken gray screen thing once about 4 days into owning the TP and never since. Ive had it weeks now.
Jiggs1337 said:
I have everything installed on my phone, and not the card (except TomTom) and I had the broken gray screen thing once about 4 days into owning the TP and never since. Ive had it weeks now.
Click to expand...
Click to collapse
Have you used any Tweak programs??
I have found that if you use any 'Generic' Tweak programs the unit starts to go squiffy..seems a few non-device specific Tweaks from older devices cause problems, especially BT (different hardware and even WM5, 6 and 6.1 specific!).
Just add the known working tweaks for this device via a reg editor ( most Diamond seem to be OK so far) and if you add them one-by-one you will know where problems occur..
Remember, everything on this forum holds the the 'Caveat Emptor' disclaimer..(except you usually get it for free!)
Here, use this from windows when connected via Async if you don't have an internal reg editor (takes up zero room also!)
Search for the thread with Raphael tweaks, before the device was even released someone who got their hands on a pre-release tested out every single tweak from the "Diamond tweaks" thread and gave feedback on if it worked or not, and how much it improved the device. That should narrow it down to the tweaks you should do and the ones you shouldn't bother with.
Thundarr The Barbarian said:
Search for the thread with Raphael tweaks, before the device was even released someone who got their hands on a pre-release tested out every single tweak from the "Diamond tweaks" thread and gave feedback on if it worked or not, and how much it improved the device. That should narrow it down to the tweaks you should do and the ones you shouldn't bother with.
Click to expand...
Click to collapse
Yup can't agree more..
Search and Ye shall learn.
lol, since i owned the TP i already installed everything on the phone itself and not the storagecard.
and like i mentioned in other threads, i have never hed a problem so far.
(still knocking on wood)
even TT works great, no GPS lag or what ever (the maps are on storagecard but program is not).
I have to say that I installed a ton of programs on my Storage card, and never had any issue. I am using a 2GB MicroSd card. Maybe the problem is with larger capacity cards or the SDHC drivers on the mobile itself?
I have the Touch Pro for a bit over a month now and never had any issues with the screen or anything else other than the GPS. Most of my applications are installed on the memory card, except WkTask and Pocket Wakeup. I have also used advanced config 3.2 to alter many settings. I have a 8Gb microSD Sandisk card which I purchased for my N95 many months ago when they first came out, which is formatted as FAT32. I don't know if these help but I guess other factors should be considered, like the SD card's format, it's speed and it's quality.
I got allmost all mt programs installed on the storage card (8GB SDHC) exept the advanced config. and my phone works like like a dream.. ok that was to exaggerate
But I never had any issues with it since I uninstalled sensor lock from the phone.
Farsquidge said:
Have you used any Tweak programs??
I have found that if you use any 'Generic' Tweak programs the unit starts to go squiffy..seems a few non-device specific Tweaks from older devices cause problems, especially BT (different hardware and even WM5, 6 and 6.1 specific!).
Just add the known working tweaks for this device via a reg editor ( most Diamond seem to be OK so far) and if you add them one-by-one you will know where problems occur..
Remember, everything on this forum holds the the 'Caveat Emptor' disclaimer..(except you usually get it for free!)
Here, use this from windows when connected via Async if you don't have an internal reg editor (takes up zero room also!)
Click to expand...
Click to collapse
I used AdvancedConfig to apply the speed boost tweaks as well as various other things, like power saving stuff. I did a registry edit to hide SIM contacts, that didnt save though after a soft reset.
I only had the gray screen once at a restaurant about 4 or 5 days after receiving it. Since then I have had a few freezes, but nothing major. TomTom works great for me too.
Also, something strange, when i got it new, it got very hot like i read on the forum from a few people, but since then, it doesnt do that. It gets a little warm, but not hot.
hey friends,
I installed Google Maps in storage card (4GB HDHC).
sometimes I feel it freezes. I have to close the app and restart it to make it work properly, or I have to do soft reset.
if I will install it in my phone memory, will Google Maps cache consume lot of space?
thehellraiser said:
hey friends,
I installed Google Maps in storage card (4GB HDHC).
sometimes I feel it freezes. I have to close the app and restart it to make it work properly, or I have to do soft reset.
if I will install it in my phone memory, will Google Maps cache consume lot of space?
Click to expand...
Click to collapse
... way to bring a post from last year back into action:[
no it will not you should just install it to your phone , there is more than enough room to hold 15 google maps if you wanted so don't fret about installing things to internal memory.

Wizard all of a sudden slow/laggy as hell

So lately my phone has been really laggy and it was really random. A soft reset doesn't do anything and it continues to be slow. It's so laggy that when someone calls, it ends up freezing up on me that I can't answer the phone on time. I noticed that when I use Oxios CloseApps/Hibernate to free up some memory, it successfully does it making my used ram to about 85%, but all of a sudden it moves up to 95% in a matter of 5 seconds.
I forgot which ROM I'm due to it being a long time, but I know that it does have WizFlo on it and that's pretty much all I know about it haha.
This is generally a problem caused by low space on the internal storage. I find deleting sms's and installing software to SD rather than internal storage helps alot with this. I have noticed that the sweet spot for the wizard is to have at least 20mb free space on internal storage. Backup what you need using Pim Backup and then do a hard reset. Install your fav softwares to storage and off you go. Hope this helps
yep that's a pefect answer ...
cornelha said:
This is generally a problem caused by low space on the internal storage. I find deleting sms's and installing software to SD rather than internal storage helps alot with this. I have noticed that the sweet spot for the wizard is to have at least 20mb free space on internal storage. Backup what you need using Pim Backup and then do a hard reset. Install your fav softwares to storage and off you go. Hope this helps
Click to expand...
Click to collapse
Thanks so much, this has definitely helped. And I just realized that it was your ROM that I was using haha

[Q] High cpu usage after installing/uninstalling apps

Hello people
After installing or uninstalling any application, either from market or from an .apk, I get high cpu usage ranging anywhere from 10 seconds up to a minute. Especially after updating multiple apps from market for example, I usually let it settle a couple of minutes before I go ahead and use it.
Phone either becomes sluggish or just plain unresponsive until cpu drops down to normal. As you can see on my signature I've underclocked and undervolted, however that's not the point. Even with cpu set at 1.56ghz with no undervolt, the issue remains, although in much less severity.
At first I believed it was my SD card, as android tries to push the app to sd, with my old 32gb class 4 card I thought it was normal. However it also happens on my new sandisk sdxc 64gb (class 6).
What could the problem be? Any way I can troubleshoot this issue (if it is, in fact, an issue and not just Android moving things around)?

[Q] Clarification on What is exactly is Rom2SD?

Greetings,
I'm currently running Cromi and have become interested in Rom2SD
From what I understand I need a sandisk ultra (30mbs) card which is a minisd
Then I install a version of Cromi with Rom2sd and install another version,
I read that it makes the tablet snappier/faster,
What I don't understand is why
Is this linked to the tablets 1gb memory?
Would using a 16gb memory card allow me to use 2-4gb of memory and increase response/peppyness
It lags frequently making it undesirable for use
You can look at it this way:
Imagine you have a computer or tablet with two hard drives (or SD cards) installed. One is cheap slow memory resulting in slow read/write speed, the other one allows much faster read/write speeds.
Which one would be better suited to run your system?
With rom2sd you basically install a better and faster SD card to your tablet (in form of a microSD). You install the rom and all your apps to the faster card resulting in better performance. Your old (internal) card is still accessible as storage but has (almost) no role in the actual running of the system.
Does this make sense?
BTW, if you are running CROMi-X on internal and your tablet is sluggish you should investigate why. That's not normal and whenever a user reports lag on CROMi-X it always turned out to be: one dirty flash too many, outdated bootloader, user installed apps - or something similar.
Personally I get better Quadrant scores with rom2sd, but in my day-to-day operation I don't really notice a difference between the two. At least as long as I keep fsync off on internal
berndblb said:
You can look at it this way:
Imagine you have a computer or tablet with two hard drives (or SD cards) installed. One is cheap slow memory resulting in slow read/write speed, the other one allows much faster read/write speeds.
Which one would be better suited to run your system?
With rom2sd you basically install a better and faster SD card to your tablet (in form of a microSD). You install the rom and all your apps to the faster card resulting in better performance. Your old (internal) card is still accessible as storage but has (almost) no role in the actual running of the system.
Does this make sense?
BTW, if you are running CROMi-X on internal and your tablet is sluggish you should investigate why. That's not normal and whenever a user reports lag on CROMi-X it always turned out to be: one dirty flash too many, outdated bootloader, user installed apps - or something similar.
Personally I get better Quadrant scores with rom2sd, but in my day-to-day operation I don't really notice a difference between the two. At least as long as I keep fsync off on internal
Click to expand...
Click to collapse
Indeed I'm still on 5.2.3 odex from Dec 16 and running internal with fsync off and I don't get any lags at all. In fact I would say that the tab is running extremely smoothly
Hmm Dirty FLash??
I reset after reboot would that help?
Is it advisable to reformat SDCARD as well?
How can I check bootloader version or update?
I thought Cromi-X came with bootloader or I might have missed a step,
Is it recommended to update bootloader -> Clean INstall Cromi-x?
If so how should I go about, currently on Cromi-X newest Release, used twrp to install last week
Appreciate the input and help, tired of my girl who uses a IPAD 3 talking smack
I have opposite experience to those mentioned here.
Yes, CROMI-X runs very very smoothly right after install.
But after a month or so, it is so unbearable i have this moments when i am just about to throw it out of the window (3rd floor) and save me some stress using it forever. It annoys me so much i want to scream sometimes.
I don't know what it is that it slows it down so much, but from 700€ tablet i never expected this in first place.
Example:
opening chrome - sometimes fast, sometimes slow
immediately trying to stop loading of the opened page as i don't want to wait for it - but before it registers my touch sometimes takes 30s or a minute
pressing address box for manual input - another minute or more
waiting for keyboard to actually show - another minute
typing an address - another minute
By this time i am already annoyed and just press power button - more luck next time.
And this goes on and on and on.
It is weird as sometimes it really is fast, but than, most of the time is just waiting and waiting and *****ing.
If someone can tell me what apps could be slowing it down, i would appreciate it.
Bad karma tablet all the way.

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