[lkml]   [2006]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: High load average on disk I/O on 2.6.17-rc3
    On Sun, May 07, 2006 at 09:50:39AM -0700, Andrew Morton wrote:
    > This is probably because the number of pdflush threads slowly grows to its
    > maximum. This is bogus, and we seem to have broken it sometime in the past
    > few releases. I need to find a few quality hours to get in there and fix
    > it, but they're rare :(
    > It's pretty harmless though. The "load average" thing just means that the
    > extra pdflush threads are twiddling thumbs waiting on some disk I/O -
    > they'll later exit and clean themselves up. They won't be consuming
    > significant resources.

    Not completely harmless. Some daemons (sendmail, exim) use the load
    average to decide if they will allow more work. A local user could
    create a mail DoS by just copying a couple of large files around. mail went down due to this. See .


    +-- Erik Mouw -- -- +31 70 370 12 90 --
    | Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2006-05-08 13:18    [W:0.034 / U:12.612 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site