On our server, one processor utilized more than others

Solution Verified - Updated -

Issue

  • Our system is a KVM guest. There is no issue at the moment, however we are looking for an explanation as to why processor 15 seems to be more constantly utilized when compared to the others.
# mpstat -P ALL 20
Linux 2.6.18-194.el5 (<hostname>)        02/10/2014

02:24:38 PM  CPU   %user   %nice    %sys %iowait    %irq   %soft  %steal   %idle    intr/s
02:24:58 PM  all   10.59    0.00    1.21    0.09    0.08    2.84    0.00   85.18   1259.79
02:24:58 PM    0   10.34    0.00    1.05    0.05    0.00    3.30    0.00   85.26    966.33
02:24:58 PM    1   11.75    0.00    1.00    0.05    0.00    2.75    0.00   84.45      0.00
02:24:58 PM    2    5.50    0.00    0.65    0.00    0.00    2.65    0.00   91.20      0.00
02:24:58 PM    3    5.70    0.00    0.75    0.00    0.00    2.75    0.00   90.80      0.00
02:24:58 PM    4   11.85    0.00    1.30    0.15    0.00    2.95    0.00   83.75      0.00
02:24:58 PM    5   10.90    0.00    1.10    0.00    0.00    2.55    0.00   85.45      0.00
02:24:58 PM    6    7.80    0.00    0.65    0.05    0.00    2.85    0.00   88.66      0.00
02:24:58 PM    7    8.55    0.00    0.95    0.00    0.00    2.60    0.00   87.90      0.00
02:24:58 PM    8   10.51    0.00    1.05    0.00    0.00    2.65    0.00   85.79      0.00
02:24:58 PM    9    7.09    0.00    0.90    0.05    0.00    2.65    0.00   89.31      0.00
02:24:58 PM   10   11.04    0.00    1.30    0.05    0.00    2.70    0.00   84.92      0.00
02:24:58 PM   11    8.55    0.00    1.35    0.00    0.00    2.55    0.00   87.55      0.00
02:24:58 PM   12    5.70    0.00    1.70    0.05    0.00    3.05    0.00   89.50      0.00
02:24:58 PM   13   10.49    0.00    1.45    0.00    0.05    2.70    0.00   85.31     10.49
02:24:58 PM   14    6.85    0.00    1.25    1.15    0.15    2.55    0.00   88.04      6.04
02:24:58 PM   15   36.80    0.00    2.95    0.00    1.15    4.35    0.00   54.75    276.87
# ps -A -o pid,cmd,psr|grep 15
   47 [migration/15]               15
   48 [ksoftirqd/15]               15
   49 [watchdog/15]                15
   65 [events/15]                  15
  344 [kblockd/15]                 15
  440 [cqueue/15]                  15
  636 [aio/15]                     15
  942 [ata/15]                     15
 2643 [kmpathd/15]                 15
 3268 [rpciod/15]                  15
 3824 /usr/bin/python /usr/sbin/o  15
 8286 sshd: wsadmin [priv]         15
 9189 sshd: root@pts/1             15
 9900 /opt/teamquest/manager/bin/  15

Environment

  • Red Hat Enterprise Linux 5.5

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