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Internal SDCard Tweak 38% faster read speeds! [Root Required]
03-11-2012, 03:50 AM
Post: #1
Internal SDCard Tweak 38% faster read speeds! [Root Required]
Here's the HowTo on making your internal SDCard run faster.
You can see there are good gains from this tweak. This should hope the folks who are running movies off the internal storage. Smile


@128 (Stock)
Write Speed: 5.6 MB/s
Reading Speed: 10.5 MB/s


@2048
Write Speed: 5.6 MB/s
Reading Speed: 14.5 MB/s (38% faster Read speeds!)

===================================================================
SD Tools - Veluscek Ales
https://play.google.com/store/apps/detai...ek.sdtools
===================================================================
@128 (Stock)
Write Speed: 5.6 MB/s
Reading Speed: 10.5 MB/s
[Image: 347wa5z.jpg]

@512
Write Speed: 5.7 MB/s
Reading Speed: 12.5 MB/s
[Image: 2415wdd.jpg]

@1024
Write Speed: 5.6 MB/s
Reading Speed: 13.8 MB/s
[Image: ei2iar.jpg]

@2048
Write Speed: 5.6 MB/s
Reading Speed: 14.5 MB/s
[Image: 2zfoa6s.jpg]

@3072
Write Speed: 5.6 MB/s
Reading Speed: 14.6 MB/s
[Image: dftytt.jpg]

@4096
Write Speed: 5.6 MB/s
Reading Speed: 13.8 MB/s
[Image: 2cr9jdy.jpg]

======================================
HowTo: SDCard Tweak via Script Manager
======================================
Since Equiso doesn't build the ROM with init.d there isn't a easy way to run this script at boot up without the help of Script Manager. If you want to test you can edit the /sys/devices/virtual/bdi/240:0/read_ahead_kb and change the value from 128 to 2048. As soon as you reboot/power cycle the settings will revert back to stock (128).

================================================
Download sdcard_tweak.sh and move it to /sdcard
================================================
https://dl.dropbox.com/u/7909146/sdcard_tweak.sh
Open up Terminal (Download if you dont have it installed: https://play.google.com/store/apps/detai...ndroidterm)
su <Enter> *If first time using it give it SU access
chmod 755 /sdcard/sdcard_tweak.sh <Enter>

====================================
Use Android Script Manager by Devwom
====================================
Install Script Manager from Google Play
https://play.google.com/store/apps/detai...ager&hl=en
Run Script Manger *If first time using it give it SU access
Navigate to /mnt/sdcard/sdcard_tweak.sh
Click on Su & Boot (See Image)
[Image: am7i35.jpg]
Save
Exit
Reboot Equiso


If everything is done correctly your read_ahead_kb file should be set at 2048 at bootup.
You can navigate to /sys/devices/virtual/bdi/240:0/read_ahead_kb and check the file
OR
Open up terminal and type the following without quotes "cat /sys/devices/virtual/bdi/240:0/read_ahead_kb"
If you see 2048 your done. Enjoy! Smile

Root Std
Root Pro
build.prop Tweak! (SU)
38% faster read (SU)
Tweaks
Quote
12-11-2012, 12:55 AM
Post: #2
RE: Internal SDCard Tweak 38% faster read speeds! [Root Required]
Thanks for the tweak.
I gave it a go last night and it improved the read speed to 13.6MB/s but strangely the write speed dropped to 4.6MB/s. I don't know how much I trust the SD Tools reading though because the test before that one I got a write speed of 12MB/s.
Maybe I should have quit testing while it was reading high and I would have been happy Big Grin
Thanks for all your hard work.

Cheers
Peter
Quote
12-11-2012, 08:49 AM
Post: #3
Re: Internal SDCard Tweak 38% faster read speeds! [Root Required]
@cncnutz- best to benchmark shortly after the boot process has settled. The equiso seems to act strange when its hot or when you have too many processes open. Either way it should help over the stock/beta build. Smile

Root Std
Root Pro
build.prop Tweak! (SU)
38% faster read (SU)
Tweaks
Quote


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