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freemangordon is offline freemangordon
2011-09-03 , 07:20
Posts: 3,074 | Thanked: 12,960 times | Joined on Mar 2010 @ Sofia,Bulgaria
#11
There is a thread for increasing responsiveness under high IO, search it. Also you may try my settings from here, those are made especially for high IO load.
 

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VaZso is offline VaZso
2011-09-09 , 23:37
Posts: 79 | Thanked: 332 times | Joined on Jul 2011
#12
Sorry for the late answer, I had no spare time playing with it.

Now I've tried it again and set /sys/block/mmcblkX/queue/nr_requests to 8192 and it solved my problem.
I didn't have to modify anything else.

Now I could debootstrap Debian to my loop device and also I can install applications to the system without any reboots on the device.

It works well.

So, thank you very much your help, you helped me a lot.
 

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Godhell is offline Godhell
2015-05-02 , 08:10
Posts: 2 | Thanked: 2 times | Joined on May 2014 @ Moscow, Russia
#13
Originally Posted by shadowjk View Post
First set all your swappolube/whatever to defaults or uninstall so it doesn't interfere.

Then:
Code:
echo 8192 > /sys/block/mmcblk0/queue/nr_requests
echo 8192 > /sys/block/mmcblk1/queue/nr_requests
echo 1 > /proc/sys/vm/swappiness
Unpack or perform your heavy IO load.

After:
Code:
echo 100 > /proc/sys/vm/swappiness

I found this helps alot with large IO.
Just gave it a try - I/O eMMC<->Micro SD are back to normal (fast).

Thanks!!!
 

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