"dirty writeback" frequency to save power

Francisco Borges francisco.borges at gmail.com
Wed May 7 20:59:20 UTC 2008


If I use powertop, it will often advise me to increase the dirty
writeback frequency in order to save power. I normally do that with:

echo 1500 >! /proc/sys/vm/dirty_writeback_centisecs

However, this is reset with every reboot. Does anyone knows how to
configure this value?

I couldn't find anything about it in the laptop-mode.conf man page.

thanks in advance for any help,

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