2.4.28 - kswapd excessive cpu usage under heavy IO

From: Per Jessen (per_at_computer.org)
Date: 12/06/04

  • Next message: Martin Zwickel: "Re: nVidea Graphics card not recognised by lspci" 
    To: linux-kernel@vger.kernel.org
Date:	Mon, 6 Dec 2004 12:14:48 +0100

    (apologies if this is sent more than once)
    I've found similar incidences in the archives, but none that indicates that a
    solution was found.
    I'm seeing excessive cpu usage by kswapd on a 4way 500MHZ Xeon with 2GB RAM.  A
    find in a directory containing perhaps 6-700,000 files makes the box almost
    grind to a halt.  In 12days uptime, kswap has used 590:43.82, and during the
    find-exercise usually runs with 90-100% util.
    The file-system is 150GB with JFS117 on a software-RAID5 - not exactly optimal,
    I agree, but reasonably workable.

    I've read that 2.6 has significant improvements in this area, but upgrading is
    not currently an option.  

    All hints & suggestions much appreciated. 

    -- 
Per Jessen, Zurich
http://www.spamcek.com - let your spam stop here.
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