Re: xfsaild centisecs /proc wakeup control?

Eric Sandeen
2008-10-08T20:43:38Z

Linda A. Walsh wrote:
> I was looking at powertop again recently, and noticed xfsbufd and xfsaild at the top
> of the wakeup list.
> xfsbufd can be tuned with /proc/sys/fs/xfs/xfsbufd_centisecs along with 3 other
> time-related tunables. However, I don't see one for xfsaild. Is that an oversight?

On what kernel?

As far as the wakeups go, I thought this was fixed; see for example:
TAKE 977545 - xfsaild causing too many wakeups

on 2.6.27-rc8 with xfs mounted, and powertop 1.9, I don't see xfs up
very high at all:

Top causes for wakeups:
29.4% ( 15.0) <interrupt> : pata_sil680
9.4% ( 4.8) <interrupt> : eth0
7.8% ( 4.0) iscsid : __mod_timer (process_timeout)

...

2.0% ( 1.0) xfsbufd : __mod_timer (process_timeout)
2.0% ( 1.0) xfsaild : __mod_timer (process_timeout)

-Eric