Database Info

Boost Speed and Space Significantly in Android With SquashFS and AUFS or ubifs!

I think it would be a good idea to compress /system/bin and /system/lib at least with squashfs, I have done this on a couple ubuntu and gentoo systems and it actually increased performance and space significantly!
Reasons (short version): decompressing data is faster than reading it from the hard drive, in most current computers, especially when you have multiple programs reading from the disk, causing thrashing, and/or when the data on the disk is fragmented. You can read more details about what was done and the results on http://forums.gentoo.org/viewtopic-p-4732709.html#4732709
Squashfs is intended for general read-only file system use and in constrained block device/memory system, it can also be combined with a union mount system like unionfs and aufs for read/write access.
Gentoo Benchmark results:
I have compressed /bin /sbin /lib /opt /usr and then tried the following operations with and without the squashfs images mounted:
1) start the system up to the login screen
2) login and wait until desktop is usable (session is restored, hard disk stops screaming)
3) start openoffice-writer
4) start eclipse
5) generate random file access pattern and record the total time to read all files.
Code:
# find /usr -type f -printf "%s %p\n" | sort -R | awk '{ printf $2; printf "\n" }' > /sort
# time cpio -o --quiet -H newc < sort > /dev/null
Some Benchmarks on a gentoo system:
Times without squashfs+aufs:
1) 7.5 seconds to load the kernel, another 10 seconds until file systems are mounted (up to this point no speed increase is possible by this method), another 42 seconds until the login screen pops up (out of which 24 seconds are just for waiting on the network interfaces). A total of 60 seconds, out of which only 18s are relevant to our benchmark
2) 16s
3) 9s
4) 25s
5) 36m31.726s
Times with squashfs+aufs:
1) total time: 58s, out of which 16s are relevant to the benchmark -> 11% decrease in time
2) 10s -> 37.5% decrease
3) 6s -> 33% decrease
4) 22s -> 12% decrease
5) 9m48.873s -> less than 1/3 of the normal time!
We will be able to improve android boot time, app launch time, and increase space, what more could we ask for? Maybe a little bit more ram? Whats up with compcache too?
So now we just need to compile squashfs-tools for android and experiment, im pretty damn excited to try this!
[edit] Also ubifs has lzo compression, not sure how that would work either, it seems ubifs is favored over jffs2 and yaffs2
found a nice pdf:
http://free-electrons.com/doc/flash-filesystems.pdf
Benchmarks Of Yaffs2, JFFS2, SquashFS, & UBIFS:
http://free-electrons.com/pub/conferences/2008/elce/flash-filesystems.pdf
Seems like people are already using ubifs on android:
http://groups.google.com/group/andr...36603d429a/646a017892783e2b?#646a017892783e2b
Reference:
http://forums.gentoo.org/viewtopic-p-4732709.html#4732709
http://jt0.org/news/squashing_usr_and_the_2629_kernel

you should PM Cyanogen about this, he's good at this kind of stuffs, maybe he'll incorporate this hack with his MOD.

This would be a great addition to the Cyanogen Mods. Its fast enough as it is, but I can see this helping a bit more if it gets implemented!

firestrife23 said:
you should PM Cyanogen about this, he's good at this kind of stuffs, maybe he'll incorporate this hack with his MOD.
Click to expand...
Click to collapse
I notified him on Twitter, He said:
@ionstorm it's a good idea, maybe in a later release
I am sure if you say something in his thread and make more awareness of this im sure we can see it done quicker, I also let DudeOfLife know and he said he will look at it for a future release as well, he also thinks its a good idea.

Hey Defcon I'm actually playing around with this instead of Union/Cram for an upcoming build and its nice to hear some more good things!

justanothercrowd said:
Hey Defcon I'm actually playing around with this instead of Union/Cram for an upcoming build and its nice to hear some more good things!
Click to expand...
Click to collapse
hey count me in on testing this for you, also looking for your twitter..

this sounds like i good idea. i hope he does implement it

Justanotherdev just compiled squashfs for kernel 2.6.29, and he is working on it as well

I just started toying with this and 2.6.29 last night. Expect a new "experimental" version soon

1st post..
Good day all...I definately agree with poster about squashfs. I dont use gentoo..but i use Sabayon which is a gentoo derivitive..just has the option for source or binary...running an os on squash will def improve performance

compression is a mistake
Im sorry to say but this is bull****.
How you dare showing proof of eclipse (300 MB !!!!) loading up an insignificant 3 seconds faster just because you compressed it and system have to load 225MB from disk instead of 300MB. Or openoffice which i dont have but im sure it is worth a good 300 MB too, and again gaining another 3 secconds load time.
How much seconds of loading time will we gain loading a compressed 0.3 MB library, 0.00001 secs? And this "improve" at the cost of giving up a good amount of the very limited RAM needed for execution, this phone have!
not to say how much incompatibilities will carry the "decompressing on the fly" with the very poor and limited RAM this phone have. and even with cpu scaling and android accessing and decompressing libraries or apps on the phone.
force closes in sight.
I also dont trust the (5) point.
HOLY GRAIL:
The real speed boost will come with the compilation of the whole android system and libraries with -O2 (speed) instead of -Os (size)
The problem is a 2.5 MB binary compiled with -Os is a 20MB binary compiled with -O2.
-O2 is between 20% - 40% faster so i am drooling for it thinking about it, but... G1 doesnt have DISK SPACE.
-O2 compilation is the holy grail. Ask gentoo users
Oh, squashfs could come handy in this case.. sad we dont have RAM or SPACE and android is the monster of slowiness. java suck!

If its a mistake then don't use it and work on the O2 yourself.

also: the phone has flash memory, which should have totally different characteristics

I wouldn't totally dismiss this idea until it's actually tested. LZO compression is really fast. A couple of us are working on it.

Squashfs was made for and used for low memory systems, I've seen amazing results on systems with 128 meg ram and a 500mhz processor, we'll try it on android and see what happens, I'm curious

*subscribed*
definately looking forward to seeing how this turns out, i just reverted back to ION today for the performance over rosie, and i cant imagine any faster, this would definately be another milestone if it worked out

Have you tried cyanogen's builds? Imo its faster than the ion roms.
wootroot said:
*subscribed*
definately looking forward to seeing how this turns out, i just reverted back to ION today for the performance over rosie, and i cant imagine any faster, this would definately be another milestone if it worked out
Click to expand...
Click to collapse

dwang said:
Have you tried cyanogen's builds? Imo its faster than the ion roms.
Click to expand...
Click to collapse
I will confirm that it is at least equal. Faster is questionable, but Cyanogen does do optimization, so...

dwang said:
Have you tried cyanogen's builds? Imo its faster than the ion roms.
Click to expand...
Click to collapse
I am not sure which builds are faster, so far its just peoples words without benchmarks, maybe we should benchmark fs read times, ram usage, free ram, cpu times.. etc..
Also some tweaks/changes may be useless or counter productive so we'll need some tests done to make sure which tweaks work and which do not.
We gotta work on is optimizing memory/cpu and startup times, with each change we should do a benchmark.

I just tested a build using the 2.6.29 build with squashFS. xbin, framework and modules can easily be compressed to squashFS images just like JF did with cramfs. Making /system/lib a squashFS image made the phone unbearable slow until it crashed
Code:
I/ActivityManager( 800): ANR (application not responding) in process: org.jsharkey.sky
I/ActivityManager( 800): Annotation: Broadcast of Intent { action=android.appwidget.action.APPWIDGET_ENABLED comp={org.jsharkey.sky/org.jsharkey.sky.TinyAppWidget} }
I/ActivityManager( 800): CPU usage:
I/ActivityManager( 800): Load: 8.63 / 7.74 / 4.33
I/ActivityManager( 800): CPU usage from 10086ms to 371ms ago:
I/ActivityManager( 800): system_server: 3% = 0% user + 3% kernel
I/ActivityManager( 800): org.freecoder.widgets.overclock: 3% = 0% user + 2% kernel
I/ActivityManager( 800): loop3: 3% = 0% user + 3% kernel
I/ActivityManager( 800): mediaserver: 2% = 0% user + 2% kernel
I/ActivityManager( 800): com.google.android.apps.scoreboard: 2% = 0% user + 1% kernel
I/ActivityManager( 800): android.process.acore: 0% = 0% user + 0% kernel
I/ActivityManager( 800): logcat: 0% = 0% user + 0% kernel
I/ActivityManager( 800): pdflush: 0% = 0% user + 0% kernel
I/ActivityManager( 800): kswapd0: 0% = 0% user + 0% kernel
I/ActivityManager( 800): loop2: 0% = 0% user + 0% kernel
I/ActivityManager( 800): vold: 0% = 0% user + 0% kernel
I/ActivityManager( 800): zygote: 0% = 0% user + 0% kernel
I/ActivityManager( 800): com.android.phone: 0% = 0% user + 0% kernel
I/ActivityManager( 800): +org.jsharkey.sky: 0% = 0% user + 0% kernel
I/ActivityManager( 800): TOTAL: 100% = 2% user + 19% kernel + 77% iowait
iowait of 77%?!

ROM Benchmarks

In search of THE fastest ROM​
SPACE SAVED FOR THE FASTEST ROM ​

Any help would be brilliant....
Im using SoftWeg Benchmark and would like anyone to download this after they have updated a ROM, Remove SD Card and wipe data. THEN do the Benchmark.
Cyanogenmod 3.9.8 32B
Graphics
Total graphics score;138.12605
Draw opacity bitmap;63.015385;MPixels per sec
Draw transparent bitmap;21.467505;MPixels per sec
CPU Whetstone
Total CPU score;132.67729
MWIPS DP;9.835743;MWIPS(DP)
MWIPS SP;9.461633;MWIPS(SP)
MFLOPS DP;2.0456715;MFLOPS(DP)
MFLOPS SP;1.7234094;MFLOPS(SP)
VAX MIPS DP;7.2467813;VAX MIPS(DP)
VAX MIPS SP;6.5513473;VAX MIPS(SP)
Memory
Total memory score;107.05253
Copy memory;97.27627;Mb/sec
Filesystem
Total file system score;21.418842
Creating 1000 empty files;8.866;sec
Deleting 1000 empty files;5.665;sec
Write 1M into file;2.107926;M/sec
Read 1M from file;40.98361;sM/sec;
SD card perfomance
Creating 250 empty files;11.292;sec
Deleting 250 empty files;7.876;sec
Write 1M into file;18.726591;M/sec
Read 1M from file;62.1118;sM/sec;

CyanogenMOD 3.9.9.1 32B
Graphics
Total graphics score;134.97528
Draw opacity bitmap;60.952385;MPixels per sec
Draw transparent bitmap;21.603376;MPixels per sec
CPU Whetstone
Total CPU score;166.22795
MWIPS DP;11.572734;MWIPS(DP)
MWIPS SP;12.675879;MWIPS(SP)
MFLOPS DP;2.2157722;MFLOPS(DP)
MFLOPS SP;3.0254915;MFLOPS(SP)
VAX MIPS DP;8.253114;VAX MIPS(DP)
VAX MIPS SP;8.443693;VAX MIPS(SP)
Memory
Total memory score;126.29102
Copy memory;114.75786;Mb/sec
Filesystem
Total file system score;31.679878
Creating 1000 empty files;7.051;sec
Deleting 1000 empty files;4.865;sec
Write 1M into file;2.0068233;M/sec
Read 1M from file;61.728394;sM/sec;
SD card perfomance
Creating 250 empty files;9.96;sec
Deleting 250 empty files;8.48;sec
Write 1M into file;19.607843;M/sec
Read 1M from file;67.1141;sM/sec;

Cyanogen 3.9.8 Sapphire Port - repacked 32B
Removed some apk's i dont use installed some i do..
Removed
Terminal Emulator
Quickoffice
Teeter
Android Log Viewer
Work Email
Email
Installed
Bluetooth Fileshare - Bluex
Taskiller Full
Screenshot
Graphics
Total graphics score;139.15968
Draw opacity bitmap;63.60248;MPixels per sec
Draw transparent bitmap;21.512606;MPixels per sec
CPU Whetstone
Total CPU score;171.2241
MWIPS DP;12.309206;MWIPS(DP)
MWIPS SP;12.81887;MWIPS(SP)
MFLOPS DP;2.204739;MFLOPS(DP)
MFLOPS SP;3.123229;MFLOPS(SP)
VAX MIPS DP;8.649143;VAX MIPS(DP)
VAX MIPS SP;8.469682;VAX MIPS(SP)
Memory
Total memory score;131.08994
Copy memory;119.11852;Mb/sec
Filesystem
Total file system score;31.62359
Creating 1000 empty files;7.521;sec
Deleting 1000 empty files;5.127;sec
Write 1M into file;1.8935808;M/sec
Read 1M from file;61.728394;sM/sec;
SD card perfomance
Creating 250 empty files;9.872;sec
Deleting 250 empty files;7.904;sec
Write 1M into file;20.325203;M/sec
Read 1M from file;62.89308;sM/sec;
Free'd up some space and got minor performance changes..

Nice. Would love to seem more. How about putting them in Excel for easier comparing?

What program are you using to get the performance tests...
I would like to post TMO MyHero (Touch...) with the Fata1ity Hero Rom.

using benchmark by softweg from the market.Try to make sure there isnt too many applications allready on the phone,i would move dalvik cache and apps to sd first
When i have enough results i will put it all into an excel spreadsheet

a quick run on the JACxHERO1.2x on a 32A
Graphics
Total graphics score;110.75547
Draw opacity bitmap;56.7313;MPixels per sec
Draw transparent bitmap;11.010753;MPixels per sec
CPU Whetstone
Total CPU score;157.20335
MWIPS DP;11.52605;MWIPS(DP)
MWIPS SP;11.429877;MWIPS(SP)
MFLOPS DP;1.8925545;MFLOPS(DP)
MFLOPS SP;3.1283667;MFLOPS(SP)
VAX MIPS DP;7.8506227;VAX MIPS(DP)
VAX MIPS SP;7.851712;VAX MIPS(SP)
Memory
Total memory score;126.917305
Copy memory;115.32695;Mb/sec
Filesystem
Total file system score;25.252697
Creating 1000 empty files;6.779;sec
Deleting 1000 empty files;4.526;sec
Write 1M into file;1.7850767;M/sec
Read 1M from file;49.019608;sM/sec;
SD card perfomance
Creating 250 empty files;12.788;sec
Deleting 250 empty files;7.024;sec
Write 1M into file;10.080646;M/sec
Read 1M from file;50.76142;sM/sec;

CyanogenMOD 3.9.10 One ROM for all 32B
Graphics
Total graphics score;141.94427
Draw opacity bitmap;64.605675;MPixels per sec
Draw transparent bitmap;22.212582;MPixels per sec
CPU Whetstone
Total CPU score;156.0196
MWIPS DP;11.32631;MWIPS(DP)
MWIPS SP;11.868028;MWIPS(SP)
MFLOPS DP;2.2806008;MFLOPS(DP)
MFLOPS SP;2.943571;MFLOPS(SP)
VAX MIPS DP;7.775884;VAX MIPS(DP)
VAX MIPS SP;7.155885;VAX MIPS(SP)
Memory
Total memory score;126.50879
Copy memory;114.95574;Mb/sec
Filesystem
Total file system score;31.797188
Creating 1000 empty files;8.394;sec
Deleting 1000 empty files;6.149;sec
Write 1M into file;1.8594273;M/sec
Read 1M from file;62.1118;sM/sec;
SD card perfomance
Creating 250 empty files;11.772;sec
Deleting 250 empty files;7.812;sec
Write 1M into file;19.96008;M/sec
Read 1M from file;62.89308;sM/sec;

Thanks chris B, I thought the 32A has more memory? Seems strange its score is no better on the memory test :/

bonesy said:
Thanks chris B, I thought the 32A has more memory? Seems strange its score is no better on the memory test :/
Click to expand...
Click to collapse
Let me just flash the Cyanogen 3.9.9.1 and do a bench..

ChrisB said:
Let me just flash the Cyanogen 3.9.9.1 and do a bench..
Click to expand...
Click to collapse
Thanks i have to work now so will put all the info so far into a spreadsheet or some sort of graph when i get back at 1am.Thanks again and please keep them coming its not a particularly hard thing to do!

Here we go.. CyanogenMOD 3.9.9.1 32A port.
Graphics
Total graphics score;122.895775
Draw opacity bitmap;53.472584;MPixels per sec
Draw transparent bitmap;21.694916;MPixels per sec
CPU Whetstone
Total CPU score;163.58177
MWIPS DP;11.648224;MWIPS(DP)
MWIPS SP;12.211503;MWIPS(SP)
MFLOPS DP;2.2989812;MFLOPS(DP)
MFLOPS SP;3.1188185;MFLOPS(SP)
VAX MIPS DP;7.918034;VAX MIPS(DP)
VAX MIPS SP;8.255877;VAX MIPS(SP)
Memory
Total memory score;126.946594
Copy memory;115.35356;Mb/sec
Filesystem
Total file system score;28.689903
Creating 1000 empty files;7.56;sec
Deleting 1000 empty files;5.23;sec
Write 1M into file;1.8539118;M/sec
Read 1M from file;55.86592;sM/sec;
SD card perfomance
Creating 250 empty files;35.272;sec
Deleting 250 empty files;7.028;sec
Write 1M into file;18.083183;M/sec
Read 1M from file;57.471264;sM/sec;

Cyanogen 3.9.11.2 32B
Graphics
Total graphics score;140.79968
Draw opacity bitmap;65.431305;MPixels per sec
Draw transparent bitmap;20.686869;MPixels per sec
CPU Whetstone
Total CPU score;160.76784
MWIPS DP;11.17568;MWIPS(DP)
MWIPS SP;12.397718;MWIPS(SP)
MFLOPS DP;2.22978;MFLOPS(DP)
MFLOPS SP;3.0210845;MFLOPS(SP)
VAX MIPS DP;7.9092903;VAX MIPS(DP)
VAX MIPS SP;7.9360266;VAX MIPS(SP)
Memory
Total memory score;121.46799
Copy memory;110.375275;Mb/sec
Filesystem
Total file system score;18.566294
Creating 1000 empty files;9.154;sec
Deleting 1000 empty files;4.861;sec
Write 1M into file;2.0169423;M/sec
Read 1M from file;35.33569;sM/sec;
SD card perfomance
Creating 250 empty files;18.232;sec
Deleting 250 empty files;7.98;sec
Write 1M into file;0.024713753;M/sec
Read 1M from file;67.567566;sM/sec;
I did a benchmark using superlight themed Hero but results were far too low to compare. Got 67.9 graphics and 108 cpu.
When i have enough i will host an excel report with graphs and stuff.
BEST SO FAR!!!

OMG LOOK AT THE CPU IN THIS ROM AMON RA V1.1 32A
Graphics
Total graphics score;115.16564
Draw opacity bitmap;56.7313;MPixels per sec
Draw transparent bitmap;13.708165;MPixels per sec
CPU Whetstone
Total CPU score;180.01723
MWIPS DP;13.140604;MWIPS(DP)
MWIPS SP;13.730605;MWIPS(SP)
MFLOPS DP;2.2668297;MFLOPS(DP)
MFLOPS SP;3.1103702;MFLOPS(SP)
VAX MIPS DP;8.962355;VAX MIPS(DP)
VAX MIPS SP;8.807292;VAX MIPS(SP)
Memory
Total memory score;127.10787
Copy memory;115.500114;Mb/sec
Filesystem
Total file system score;30.420616
Creating 1000 empty files;7.808;sec
Deleting 1000 empty files;5.145;sec
Write 1M into file;1.3215277;M/sec
Read 1M from file;59.88024;sM/sec;
SD card perfomance
Creating 250 empty files;8.116;sec
Deleting 250 empty files;6.108;sec
Write 1M into file;22.172949;M/sec
Read 1M from file;60.97561;sM/sec;

Thanks killa, I think im going to need 2 seperate reports when we've compiled enough info. 1 for 32A and 1 For 32B.It seems that 32A gets alot more cpu than b.Out of curiosity are you both using an overclocking application?

yup setcpu 528/384

Killadude said:
yup setcpu 528/384
Click to expand...
Click to collapse
Brilliant im doing the same but with overclock widget. For some reason setCPU would revert to defaults when i went to home screen.

have u tried the latest version 1.3.6?
ps the reason my sd is slow is cuz its not class 6!

I think ill leave sd out as the result will vary the most

[RFC] enable CONFIG_UACCESS_WITH_MEMCPY

I've tested enabling CONFIG_UACCESS_WITH_MEMCPY in a 2.6.33.4 kernel for CM-5.0.8.
Code:
Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)
CONFIG_UACCESS_WITH_MEMCPY:
Implement faster copy_to_user and clear_user methods for CPU
cores where a 8-word STM instruction give significantly higher
memory write throughput than a sequence of individual 32bit stores.
A possible side effect is a slight increase in scheduling latency
between threads sharing the same address space if they invoke
such copy operations with large buffers.
However, if the CPU data cache is using a write-allocate mode,
this option is unlikely to provide any performance gain.
Empirically there seems to be an improvement not in snappiness but when
heavier i/o is involved. The only test i could think of so far is:
Code:
WITH CONFIG_UACCESS_WITH_MEMCPY
/ # hdparm -tT /dev/block/mmcblk0p2
/dev/block/mmcblk0p2:
Timing buffer-cache reads: hdparm: HDIO_DRIVE_CMD: Inappropriate ioctl for device
78 MB in 0.51 seconds = 154505 kB/s
Timing buffered disk reads: 42 MB in 3.03 seconds = 14171 kB/s
hdparm: HDIO_DRIVE_CMD: Inappropriate ioctl for device
Code:
WITHOUT CONFIG_UACCESS_WITH_MEMCPY
/ # hdparm -tT /dev/block/mmcblk0p2
/dev/block/mmcblk0p2:
Timing buffer-cache reads: hdparm: HDIO_DRIVE_CMD: Inappropriate ioctl for device
24 MB in 0.56 seconds = 43828 kB/s
Timing buffered disk reads: 15 MB in 3.11 seconds = 4938 kB/s
hdparm: HDIO_DRIVE_CMD: Inappropriate ioctl for device
Attached you will find a boot.img and modules.sqf or modules.tar.gz for CM-5.0.8 if you want to test it.
For a fast test you can use fastboot to boot the kernel:
Code:
sudo fastboot boot new_boot.img
For more extensive tests you maybe need to copy the modules to your device
(the .sqf or tar.gz depending on your setup DeathSPL/AnySPL) and eventually flash the boot image.
DON'T DO IT IF YOU DON'T KNOW EXACTLY HOWTO!!!
Attached also my kernel config.
Critics and hints on whether this could be useful are welcome.
Enjoy.

[Q] Fastest ROM

Just looking for input on the fastest ROM out there. I've only tried one myself - MightyROM - and I love it, but I do get a frustrating amount of lag on the phone and tends to use alot of RAM.
What are your lightning fast fav's?

I really liked the bare naked ROM series but that was discontinued, hands down it was the fastest ROM i've ever tried. Right now i honestly cant find any noticable difference between most ROMS anymore in terms of speed. Although I havnt tried grooveROM, I just overclock all my ROMS now and any manila 2.5 ROM is almost always the same speed.

I have used alot of roms but so far the one I have kept the longest is the neodium rom. Get the one that says "Sept 15 Neo-CHT-2018 (SYS 21916)". Manila runs so smooth, it has CHT, & I have never had any lock ups. I haven't soft reset my phone in about 1 month (which is when I got the rom). That says it all to me.
Here is the link at PPCGeeks.

Thanks for the info. I think I'll give that other rom a try. I hadn't considered overclocking but I'll start a seach for that and see how thats done too. Thanks!

Loaded neodium rom last night and so far really like it. It really does seem faster! Have you tried the other versions of it that are available - Plutonium?

Mine is 21057 core WM 6.1 with Sense 2.1919,that is freaking fast enough,and always stay on around 50% RAM,that's why I don't like any WM 6.5 with Sense 2.5 till now

Please people. If you are gonna say that any rom is the "fastest", please post benchmarks to prove it.

Benchmarks from my latest rom:
Code:
Report
Spb Benchmark Indices
Spb Benchmark index 541.81 (iPAQ 3650 scored 1000)
CPU index 2397.32 (iPAQ 3650 scored 1000)
File system index 227.01 (iPAQ 3650 scored 1000)
Graphics index 1709.62 (iPAQ 3650 scored 1000)
ActiveSync index insufficient number of tests were done. (iPAQ 3650 scored 1000)
Platform index insufficient number of tests were done. (iPAQ 3650 scored 1000)
Main test was not done
Main test results
Test Time Speed % of iPAQ 3650* speed
Write 1 MB file 458 ms 2238 KB/sec 282%
Read 1 MB file 56.4 ms 17.7 MB/sec 97%
Copy 1 MB file 507 ms 2020 KB/sec 256%
Write 10 KB x 100 files 4197 ms 244 KB/sec 44%
Read 10 KB x 100 files 338 ms 2.96 MB/sec 47%
Copy 10 KB x 100 files 3998 ms 256 KB/sec 54%
Directory list of 2000 files 1024 ms 1.95 thousands of files/sec 2%
Internal database read 621 ms 1610 records/sec 382%
Graphics test: DDB BitBlt 11.4 ms 88 frames/sec 327%
Graphics test: DIB BitBlt 28.5 ms 35.1 frames/sec 260%
Graphics test: GAPI BitBlt 4.47 ms 223 frames/sec 104%
Compress 1 MB file using ZIP 2396 ms 423 KB/sec 399%
Decompress 1024x768 JPEG file 499 ms 564 KB/sec 177%
Arkaball frames per second 6.81 ms 147 frames/sec 136%
CPU test: Whetstones MFLOPS 2771 ms 0.134 Mop/sec 291%
CPU test: Whetstones MOPS 814 ms 77.4 Mop/sec 227%
CPU test: Whetstones MWIPS 5820 ms 8.59 Mop/sec 289%
Memory test: copy 1 MB using memcpy 6.82 ms 147 MB/sec 208%

MR.X ROM its super fast but you cant send picture mail

The Energy Titanium ROM is the fastest so far and the least number of problems! Very silky smooth.

Problems with Samsung Class6 16GB

Hey,
I just got my new SD card today and was excited, as reviews seemed to give an average of 18MB/s seq.read, 13MB/s seq.write while random read would be at around 3MB/s. I partitioned it with 4ext : 1gig ext4, rest fat32.
I first transferred my music library on it and figured it was the many small, individual files that gave such poor writing time. I then uploaded a single 350MB file and it took nearly 1min to complete, if not more.
I performed a CDM3 test to get the clear picture with only 100MB and got the following results:
-----------------------------------------------------------------------
Sequential Read : 9.732 MB/s
Sequential Write : 5.588 MB/s
Random Read 512KB : 8.131 MB/s
Random Write 512KB : 1.408 MB/s
Random Read 4KB (QD=1) : 1.059 MB/s [ 258.6 IOPS]
Random Write 4KB (QD=1) : 0.279 MB/s [ 68.2 IOPS]
Random Read 4KB (QD=32) : 1.051 MB/s [ 256.6 IOPS]
Random Write 4KB (QD=32) : 0.223 MB/s [ 54.4 IOPS]
Test : 100 MB [J: 18.5% (2.6/13.9 GB)] (x5)
-----------------------------------------------------------------------
Obviously, these are not normal speeds for a brand new Class6 card, right?
Is there something I can do about it, other than returning it, since I bought it online and I'd have to cover the travelling expenses, which is not really worth it.
*edit* what I noticed during transfers, even that of the single file, is that for some blocks of data, the speed would be okayish, 11-12MB/s at most/average of 4-5MB/s, but then it would get stuck for a few seconds and then repeat.
*edit2* FIXED
Of course, the problem was I forgot to unlock and since it was working via usb, it had me confused.
New results quite recommend the card:
-----------------------------------------------------------------------
Sequential Read : 60.013 MB/s
Sequential Write : 59.621 MB/s
Random Read 512KB : 26.559 MB/s
Random Write 512KB : 30.467 MB/s
Random Read 4KB (QD=1) : 0.350 MB/s [ 85.4 IOPS]
Random Write 4KB (QD=1) : 0.799 MB/s [ 195.0 IOPS]
Random Read 4KB (QD=32) : 0.756 MB/s [ 184.6 IOPS]
Random Write 4KB (QD=32) : 0.812 MB/s [ 198.3 IOPS]
Test : 100 MB [C: 87.3% (65.6/75.1 GB)] (x3)
-----------------------------------------------------------------------
..except for maybe the random read for 4KB, which is inexplicably lower than that of write.
A question I feel I must ask now, is the difference between hooking up the sd card via the phone's usb connection and the sd card simply put in its adapter that big? It seems enormous in the tests and I felt it myself, as the second time I tried that 350MB file, it was under 30secs. And the constant interruptions when transferring via usb are all the more worrying since they didn't seem to be happening with my old class2 card. Haven't tried yet, but it may be that wifi will win over usb for small data transfers, while big chunks of data will require taking out the sd card to make use of the adapter. Anyone encountered the same interruptions or has some suggestions? It'd be greatly appreciated.

what app do you use to make the test? i have the 8GB version and i want to test it too

Langley, exurityp
wviegas said:
what app do you use to make the test? i have the 8GB version and i want to test it too
Click to expand...
Click to collapse
Crystal Disk Mark.