lkml.org 
[lkml]   [2002]   [May]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFC][PATCH] iowait statistics
    On Tue, 14 May 2002, William Lee Irwin III wrote:
    > On Mon, May 13, 2002 at 10:19:26PM -0300, Rik van Riel wrote:
    > > 2) if no process is running, the timer interrupt adds a jiffy
    > > to the iowait time
    > [...]
    > > 4) on SMP systems the iowait time can be overestimated, no big
    > > deal IMHO but cheap suggestions for improvement are welcome
    ^^^^^
    > This appears to be global across all cpu's. Maybe nr_iowait_tasks
    > should be accounted on a per-cpu basis, where

    While your proposal should work, somehow I doubt it's worth
    the complexity. It's just a statistic to help sysadmins ;)

    regards,

    Rik
    --
    http://www.linuxsymposium.org/2002/
    "You're one of those condescending OLS attendants"
    "Here's a nickle kid. Go buy yourself a real t-shirt"

    http://www.surriel.com/ http://distro.conectiva.com/

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:26    [W:0.024 / U:2.972 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site