[lkml]   [2005]   [Dec]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH 0/4] linux-2.6-block: deactivating pagecache for benchmarks
    On Thu, Dec 01 2005, Dirk Henning Gerdes wrote:
    > Hi Jens!
    > For doing benchmarks on the I/O-Schedulers, I thought it would be very
    > useful to disable the pagecache.
    > I didn't want to make it so complicated so I just mark pages as
    > not-uptodate, so they have to be read again. Another reason was, that I
    > wanted to keep the conditions as near to reality as possible.
    > Further I thought it would be useful, if you could turn the pagecache on
    > and off without rebooting the system.
    > I implemented a proc-fs entry "/proc/benchmark/pagecache" for this.
    > Probably this patch can be useful for anyone else, who wants to do some
    > benchmarks on block-layer stuff.
    > And if not, I would appreciate if you could have a look on it.

    This is rather odd, if you ask me, I don't like it. If you are doing
    serious benchmarking, you do it on a seperate disk / file system which
    you can just umount/mount before starting over. Or you reboot the
    machine in between.

    Jens Axboe

    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: 2005-12-01 15:38    [W:0.021 / U:9.384 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site