[lkml]   [2005]   [Apr]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: bdflush/rpciod high CPU utilization, profile does not make sense
    On Wed, Apr 06, 2005 at 06:01:23PM +0200, Jakob Oestergaard wrote:
    > Problem; during simple tests such as a 'cp largefile0 largefile1' on the
    > client (under the mountpoint from the NFS server), the client becomes
    > extremely laggy, NFS writes are slow, and I see very high CPU
    > utilization by bdflush and rpciod.
    > For example, writing a single 8G file with dd will give me about
    > 20MB/sec (I get 60+ MB/sec locally on the server), and the client rarely
    > drops below 40% system CPU utilization.

    How large is the client's RAM? What does the following command report
    before and during the write?

    egrep 'nfs_page|nfs_write_data' /proc/slabinfo

    Greg Banks, R&D Software Engineer, SGI Australian Software Group.
    I don't speak for SGI.
    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: 2005-04-07 01:22    [W:0.059 / U:1.844 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site