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From: Howard Rifkin <howard.rifkin@hp.com>
To: LVM general discussion and development <linux-lvm@redhat.com>,
	bill.mair@web.de
Subject: Re: [linux-lvm] Re: Daemon or Thread with 5 minute interval
Date: Thu, 26 May 2005 13:26:41 -0400	[thread overview]
Message-ID: <429606D1.7040106@hp.com> (raw)
In-Reply-To: <d74ged$ueo$1@sea.gmane.org>


We do have the right kernel support for our didsks. But, you do not need 
a lot of CPU activity to generate noise. Just enough to disrupt the 
cashe. Does kupdated run every 5 minutes? If so it could still be the 
culprit.

Thanks

Howard


Bill Mair wrote:
> Howard Rifkin wrote:
> 
>>  So, my question is does anyone know of a
>> kernel thread or daemon in the 2.4 kernel that wakes up every 5 minutes?
> 
> 
> [kupdated] can cause massive CPU load if your kernel does not have the 
> IDE chipset support for your system. I think it flushed any data in the HD
> buffers to disk and if the chipset support isn't there, then the main 
> CPU has
> to do this using PIO.
> 
> -- 
> Bill
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

  reply	other threads:[~2005-05-26 17:26 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-05-26 11:50 [linux-lvm] Daemon or Thread with 5 minute interval Howard Rifkin
2005-05-26 12:22 ` johnpaul
2005-05-26 14:48 ` [linux-lvm] " Bill Mair
2005-05-26 17:26   ` Howard Rifkin [this message]
2005-05-26 19:42     ` Bill Mair
  -- strict thread matches above, loose matches on Subject: below --
2005-05-26 19:29 bill.mair

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