[MLton-devel] CPU utilization

[Henry Cejtin]

Ok,  so  from the look of things, some other user process is fighting for the
CPU.  That would explain the initial system load being 1 and  the  fact  that
the  idle  time  hasn't gone up at all.  The machine has been up for 67 days,
but there are only 13 days of idle time, so  assuming  that  the  machine  is
mainly  not  doing much stuff (usually correct to a first approximation), the
`tapeworm' process started 54 days ago, which would be Saturday, May 10th  by
my calculation.

What does
    ps aux -w -w -w
show?  Any process racking up CPU time?

Since it could be something constantly restarting, also try this:

    echo&
    sleep 20&
    echo&

If  nothing  else were making new processes, then the two numbers printed out
would be 2 apart.  In 20  seconds,  some  daemons  could  fire,  but  if  the
difference  is  more than 10 or so, that is what is going on.  I see from the
procinfo that in 100 seconds there were about 16K context  switches,  or  160
per second.  A bit fast, but probably just the result of 2 processes fighting
for the CPU.



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