lkml.org 
[lkml]   [2007]   [Apr]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH] Cpu statistics accounting based on Paul Menage patches
    On Wed, 11 Apr 2007 19:02:27 +0400
    Pavel Emelianov <xemul@sw.ru> wrote:

    > Provides a per-container statistics concerning the numbers of tasks
    > in various states, system and user times, etc. Patch is inspired
    > by Paul's example of the used CPU time accounting. Although this
    > patch is independent from Paul's example to make it possible playing
    > with them separately.

    Why is this actually needed? If userspace has a list of the tasks which
    are in a particular container, it can run around and add up the stats for
    those tasks without kernel changes?

    It's a bit irksome that we have so much accounting of this form in core
    kernel, yet we have to go and add a completely new implementation to create
    something which is similar to what we already have. But I don't
    immediately see a fix for that. Apart from paragraph #1 ;)

    Should there be linkage between per-container stats and
    delivery-via-taskstats? I can't think of one, really.

    You have cpu stats. Later, presumably, we'll need IO stats, MM stats,
    context-switch stats, number-of-syscall stats, etc, etc. Are we going to
    reimplement all of those things as well? See paragraph #1!

    Bottom line: I think we seriously need to find some way of consolidating
    per-container stats with our present per-task stats. Perhaps we should
    instead be looking at ways in which we can speed up paragraph #1.
    -
    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: 2007-04-11 20:53    [W:0.022 / U:212.308 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site