"dirty writeback" frequency to save power

Nils Kassube kassube at gmx.net
Wed May 7 21:37:53 UTC 2008

Francisco Borges wrote:
> 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?

You could put the command above in the file /etc/rc.local (before 
the "exit 0" line) to run it at every boot. But I don't know if it would 
survive suspend.


More information about the ubuntu-users mailing list