From: mrbean@mira.net
Date: Sun Apr 24 2005 - 09:00:17 EDT
Greetings,
I'm currently involved in setting up a new 8 CPU v880 with Solaris 9
and noted while testing some of the installed applications that two of the CPUs
were being hogged by processe/s which where not visible in the process listing
via ps or top. That is, there were no processes that were using up any
appreciable CPU time.
I shut down the application level processes which predictably had no effect on
the hogged CPUs.
mpstat
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
0 0 0 1 43 40 24 0 0 0 0 6 0 6 2 92
1 0 0 1 4 1 27 0 0 0 0 9 0 0 0 100
2 0 0 1 4 1 16 0 1 0 0 1 0 0 0 100
3 0 0 1 5 2 28 0 0 0 0 2 0 0 0 100
4 0 0 1 13 10 0 0 0 131639 0 0 0 100 0 0
5 0 0 4 4 1 32 0 1 0 0 3 0 0 0 100
6 0 0 1 4 1 9 0 0 131639 0 0 0 100 0 0
7 2 0 7 220 117 19 0 0 0 0 26 0 1 0 99
So my question is, can a process/thread be running on a CPU and not be visible
by normal process listings. Is there some other means of identifying these
rogue processes?
I have a suspicion that one of the applications that is Java based may be the
culprit. The other applications are Apache/ModPerl.
TIA
ng
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