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Re: xfsaild centisecs /proc wakeup control?

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: xfsaild centisecs /proc wakeup control?
From: Linda Walsh <lkml@xxxxxxxxx>
Date: Wed, 08 Oct 2008 17:15:32 -0700
Cc: xfs-oss <xfs@xxxxxxxxxxx>
In-reply-to: <48ED1BD8.60309@xxxxxxxxxxx>
References: <48ED0DA9.7070002@xxxxxxxxx> <48ED1BD8.60309@xxxxxxxxxxx>
User-agent: Thunderbird (Windows/20080914)
Eric Sandeen wrote:
On what kernel? (haven't rebooted to yet)
As far as the wakeups go, I thought this was fixed; see for example:
TAKE 977545 - xfsaild causing too many wakeups
  It may  be fixed in a newer kernel...(referring to David's later comment)..

Just looked at it with powertop 1.10:

Wakeups-from-idle per second :  7.1     interval: 10.0s

Top causes for wakeups:
 42.9% (  6.0)           xfsaild : schedule_timeout (process_timeout)
 14.3% (  2.0)     <kernel core> : clocksource_register (clocksource_watchdog)
  8.6% (  1.2)           xfsbufd : schedule_timeout (process_timeout)
  7.1% (  1.0)                ip : tg3_open (tg3_timer)

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