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    SubjectRe: [despammed] Re: [RFC] [PATCH] [2.5.35] Run Queue Statistics
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    On Monday 16 September 2002 11:08 pm, Rik van Riel wrote:
    > On Tue, 17 Sep 2002, Anton Blanchard wrote:
    > > On a semi related note, vmstat wants to know the number of running,
    > > blocked and swapped processes. strace vmstat one day and you will see it
    > > currently opens /proc/*/stat (ie one open for each process) just to get
    > > these stats. Yet another place where the monitoring utilities disturb
    > > the system way too much.
    > >
    > > Can we get some things in /proc/stat to give us these numbers? Does
    > > "swapped" make any sense on Linux?
    >
    > Runnable can be done currently, blocked on IO is trivial once
    > Andrew has pushed the iowait stats to Linus.
    >
    > Swapped doesn't make any sense at the moment, but it should.
    > A system without load control is just too vulnerable to sudden
    > load spikes. If Andrew has interest I'll pick up the work I
    > did in that area ...
    >
    > I'll also update vmstat to just use /proc/stat instead of
    > looking at all /proc/*/stat files.
    >
    > cheers,
    >
    > Rik

    Amusingly, the number of running processes can be found in
    /proc/loadavg, of all places, right now.
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