More wait woes 1

[KenCunningham]

Following on from previous threads about high wait times, I've been running tprof to try to get a handle on what might be causing what I consider to be excess waits on one of my servers. This is and extract of the output from a tprof -x sleep 60:

Process                                Freq  Total Kernel   User Shared  Other
=======                                ====  ===== ======   ==== ======  =====
wait                                      2  78.17  78.17   0.00   0.00   0.00
f60webm                                  11  15.51   0.78  11.20   3.52   0.00
oracle                                   30   3.27   0.54   2.67   0.07   0.00
/usr/java131/jre/bin/java                71   1.20   0.47   0.00   0.52   0.21
httpd                                    14   1.02   0.52   0.22   0.28   0.00
/usr/sbin/syncd                           2   0.29   0.29   0.00   0.00   0.00
/usr/bin/tprof                            2   0.21   0.00   0.01   0.21   0.00
gil                                       4   0.07   0.07   0.00   0.00   0.00
extprocPLSExtProc                         1   0.05   0.02   0.01   0.02   0.00
swapper                                   1   0.04   0.04   0.00   0.00   0.00
dtsession                                 2   0.02   0.01   0.00   0.02   0.00
aioserver                                 3   0.02   0.02   0.00   0.00   0.00
/usr/dt/bin/dtexec                        2   0.02   0.01   0.00   0.02   0.00
rpc.lockd                                 2   0.02   0.02   0.00   0.00   0.00
/usr/dt/bin/dtscreen                      1   0.01   0.01   0.00   0.00   0.00
extproc                                   1   0.01   0.01   0.00   0.00   0.00
IBM.CSMAgentRMd                           1   0.01   0.01   0.00   0.00   0.00
IBM.ERrmd                                 1   0.01   0.01   0.00   0.00   0.00
PID2068538                                1   0.01   0.01   0.00   0.00   0.00
/usr/bin/trcstop                          1   0.01   0.01   0.00   0.00   0.00
lrud                                      1   0.01   0.01   0.00   0.00   0.00
/usr/bin/sh                               1   0.01   0.01   0.00   0.00   0.00
dtscreen                                  1   0.01   0.01   0.00   0.00   0.00
/usr/sbin/portmap                         1   0.01   0.01   0.00   0.00   0.00
=======                                ====  ===== ======   ==== ======  =====
Total                                   157 100.00  81.03  14.11   4.65   0.21

Process                   PID      TID  Total Kernel   User Shared  Other
=======                   ===      ===  ===== ======   ==== ======  =====
wait                     8196     8197  39.11  39.11   0.00   0.00   0.00
wait                    12294    12295  39.06  39.06   0.00   0.00   0.00

What I find odd is that neither pid 8196 nor 12294 exist in a ps listing for the machine and they have been consistently appearing in tprof listings for a number of days. Can anyone explain what might be happening here, please? TIA.

I don't mind people who aren't what they seem. I just wish they'd make their mind up.

 

[mrn]

Ken,

The wait = time cpu spent doing nothing at all

1 wait process for each cpu idle

Mike

"Whenever I dwell for any length of time on my own shortcomings, they gradually begin to seem mild, harmless, rather engaging little things, not at all like the staring defects in other people's characters."

 

[KenCunningham]

Ah, thanks Mike, more scales lifted from my eyes!!

I don't mind people who aren't what they seem. I just wish they'd make their mind up.