Monday, June 10, 2013

The main key to boosting performance lies in the magnitude MicroSD
allocation of cache for read-write purposes. Most ROMs that have been
modified settings allocate no more than 128 Kb.
Some stock ROM even less than 64 Kb. To find out
how big the default settings for read-write cache can
traced through the Root Explorer app.

Open Root Explorer app, then go to the folder
/ Sys/device/virtual/bdi/179: 0/read_ahead_kb


Just open the file with a text viewer read_ahead_kb. Later will come the numbers
write-speed cache to microSD. ROM that I had just written
128 Kb. No wonder almost no visible difference between
Class 4 and Class 10.

By using applications like tweaks or the SD Speed ​​Increase
like are not enough to help boost the performance (speed)
microSD. From sources that I know of, the application is not
slightest change settings on the main ROM, so basic
still use the basic performance of the ROM. If there is any discrepancy,
but the difference is relatively small. That's what I experienced.

From the XDA Developers forum (http://forum.xda-developers.com/showthread.php?t=1010807), finally found a bright spot also causes
microSD slow performance. The key to change the setting of ROM at
/ Sys/device/virtual/bdi/179: 0/read_ahead_kb, ie by replacing
numbers read-write cache. There are two ways, through a manual way to change
or edit files read_ahead_kb or can be done
flash. I prefer the second way. Simply by placing
flash file for setting the large number of read-write memory cache.


Of the source provides a number of options for settings such as flash memory cache on the link below.

Default 128 Kb
http://forum.xda-developers.com/attachment.php?attachmentid=553604&d=1301255456
Default 1024 Kb
http://forum.xda-developers.com/attachment.php?attachmentid=553605&d=1301255456
Default 2048 Kb
http://forum.xda-developers.com/attachment.php?attachmentid=553606&d=1301255456
Default 3072 Kb
http://forum.xda-developers.com/attachment.php?attachmentid=553607&d=1301255456
Default 4096 Kb
http://forum.xda-developers.com/attachment.php?attachmentid=553608&d=1301255464

Remember
yes, you have to look for yourself and try to figure cache memory
suitable or appropriate for HH gadget. From my experience, numbers
best suited for HH is 2048 Kb. Getting past the numbers
is optimal, usually later it will decrease
its performance.

Way
use, donlot zip file above, then move them to the memory
external or space on the microSD. Remember it, do not put
in the folder, but outside of the folder. Next, go into recovery
mode, then select the [Install Zip from SDCard]. Once completed,
then select [Reboot].

Check
back through the Root Explorer app for file
/ Sys/device/virtual/bdi/179: 0/read_ahead_kb. Note, the numbers
listed will have to conform to the desired number, when
melakukkan flash. If previously in-flash with the number 2048, then
should be listed on read_ahead_kb is 2048.

Measure the speed of microSD with SD Tools applications. Find it at Play Store.
Remember, if you have previously installed microSD tweak applications,
should be disabled or uninstalled better. Reboot back
after uninstall the application, before doing
measurement via SD Tools.

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