From: Anders Norrbring (lists_at_norrbring.se)
Date: Tue Feb 15 2005 - 19:34:17 CET
From: "Anders Norrbring" <lists@norrbring.se> Date: Tue, 15 Feb 2005 19:34:17 +0100 Message-Id: <20050215183417.96FCDD842@mail.the-server.net> Subject: RE: [suse-sles-e] File systems and SCSI Arrays...
> Subject: [suse-sles-e] File systems and SCSI Arrays...
>
> I've noticed some annoying problems with one of my new systems..
>
> The disk space is located on a Compaq Smart Array 3200 controller.
> The controller takes care of everything regarding RAID, so that part
> doesn't
> load the Linux system.
> The system loads the driver cpqarray in initrd, everything seems fine so
> far.
>
> The problem is that when the file system gets a load, for example if I
> copy
> large files to the volume, it takes forever to complete and the system
> seems
> hanged. After 10-90 seconds, it continues its work. If I have one window
> open with 'top', that too freezes during this period.
>
> Since it's SuSE SLES9, I formatted everything with reiserfs, my thinking
> wass that this may be the problem, but then I tried with XFS as well, just
> the same problem.. I'm just guessing.. If someone can clear things up,
> I'd
> be grateful..
>
> Nothing gets written in /var/log/messages about any problem, I don't have
> a
> clue on where to begin looking. The arrays (disks and controller) are in
> fine condition, if I test copying, accessing and other in Windows 2000,
> everything is blazingly fast and trouble free, so the problem must be in
> the
> Linux system somewhere, I just don't have a clue to WHERE.
Addition to above:
It seems like the process 'pdflush' is playing a part here...
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