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Operating Systems AIX Problem with nmon, actual CPU usage per process Post 302778659 by -=XrAy=- on Monday 11th of March 2013 11:10:45 AM
Old 03-11-2013
Hi zaxxon,

NMON does not seem to work properly with the process option "-C" and recording mode "-f". It only shows the TOP processes.

If you specify a recording option "-f", the nmon process goes to background (init) and your command "time nmon -t -C cron -s 5 -c 2 -F outfile" returns immediately Smilie

The tprof command should work:

Code:
tprof -x sleep 15
grep "cron" sleep.prof

Code:
/usr/sbin/cron                            3   0.29   0.29   0.00   0.00   0.00
/usr/sbin/cron        7209028 12386355   0.12   0.12   0.00   0.00   0.00
/usr/sbin/cron        5111970 12845245   0.12   0.12   0.00   0.00   0.00
/usr/sbin/cron       12714162 17825889   0.06   0.06   0.00   0.00   0.00

Code:
Configuration information
=========================
System: AIX 7.1 Node: sradvu002 Machine: 00F6C66C4C00
Tprof command was:
    tprof -x sleep 15
Trace command was:
    /usr/bin/trace -ad -M -L 1073741312 -T 500000 -j 00A,001,002,003,38F,005,006,134,210,139,5A2,5A5,465,234,5D8, -o -
Total Samples = 1704
Traced Time = 15.01s (out of a total execution time of 15.01s)
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Process                                Freq  Total Kernel   User Shared  Other
=======                                ====  ===== ======   ==== ======  =====
wait                                     16  98.00  98.00   0.00   0.00   0.00
/usr/bin/perl                             3   0.76   0.23   0.00   0.53   0.00
/usr/sbin/cron                            3   0.29   0.29   0.00   0.00   0.00
/usr/sbin/syncd                           1   0.18   0.18   0.00   0.00   0.00
/usr/bin/ksh                              1   0.12   0.12   0.00   0.00   0.00
/usr/bin/sh                               2   0.12   0.06   0.06   0.00   0.00
/usr/bin/grep                             2   0.12   0.12   0.00   0.00   0.00
/usr/bin/sleep                            1   0.06   0.06   0.00   0.00   0.00
/usr/bin/tprof                            1   0.06   0.06   0.00   0.00   0.00
/usr/bin/hostname                         1   0.06   0.06   0.00   0.00   0.00
/usr/bin/trcstop                          1   0.06   0.00   0.00   0.06   0.00
/usr/bin/basename                         1   0.06   0.06   0.00   0.00   0.00
/usr/bin/printf                           1   0.06   0.06   0.00   0.00   0.00
/usr/bin/cut                              1   0.06   0.06   0.00   0.00   0.00
=======                                ====  ===== ======   ==== ======  =====
Total                                    35 100.00  99.35   0.06   0.59   0.00

.....SNIP....

 

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cron(1M)						  System Administration Commands						  cron(1M)

NAME
cron - clock daemon SYNOPSIS
/usr/sbin/cron DESCRIPTION
cron starts a process that executes commands at specified dates and times. You can specify regularly scheduled commands to cron according to instructions found in crontab files in the directory /var/spool/cron/crontabs. Users can submit their own crontab file using the crontab(1) command. Commands which are to be executed only once can be submitted using the at(1) command. cron only examines crontab or at command files during its own process initialization phase and when the crontab or at command is run. This reduces the overhead of checking for new or changed files at regularly scheduled intervals. As cron never exits, it should be executed only once. This is done routinely by way of the svc:/system/cron:default service. The file /etc/cron.d/FIFO file is used as a lock file to prevent the execution of more than one instance of cron. cron captures the output of the job's stdout and stderr streams, and, if it is not empty, mails the output to the user. If the job does not produce output, no mail is sent to the user. An exception is if the job is an at(1) job and the -m option was specified when the job was submitted. cron and at jobs are not executed if your account is locked. Jobs and processses execute. The shadow(4) file defines which accounts are not locked and will have their jobs and processes executed. Setting cron Jobs Across Timezones The timezone of the cron daemon sets the system-wide timezone for cron entries. This, in turn, is by set by default system-wide using /etc/default/init. If some form of daylight savings or summer/winter time is in effect, then jobs scheduled during the switchover period could be executed once, twice, or not at all. Setting cron Defaults To keep a log of all actions taken by cron, you must specify CRONLOG=YES in the /etc/default/cron file. If you specify CRONLOG=NO, no log- ging is done. Keeping the log is a user configurable option since cron usually creates huge log files. You can specify the PATH for user cron jobs by using PATH= in /etc/default/cron. You can set the PATH for root cron jobs using SUPATH= in /etc/default/cron. Carefully consider the security implications of setting PATH and SUPATH. Example /etc/default/cron file: CRONLOG=YES PATH=/usr/bin:/usr/ucb: This example enables logging and sets the default PATH used by non-root jobs to /usr/bin:/usr/ucb:. Root jobs continue to use /usr/sbin:/usr/bin. The cron log file is periodically rotated by logadm(1M). FILES
/etc/cron.d Main cron directory /etc/cron.d/FIFO Lock file /etc/default/cron cron default settings file /var/cron/log cron history information /var/spool/cron Spool area /etc/cron.d/queuedefs Queue description file for at, batch, and cron /etc/logadm.conf Configuration file for logadm ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
svcs(1), at(1), crontab(1), sh(1), logadm(1M), svcadm(1M), queuedefs(4), shadow(4), attributes(5), smf(5) NOTES
The cron service is managed by the service management facility, smf(5), under the service identifier: svc:/system/cron:default Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). The ser- vice's status can be queried using the svcs(1) command. DIAGNOSTICS
A history of all actions taken by cron is stored in /var/cron/log and possibly in /var/cron/olog. SunOS 5.10 5 Aug 2004 cron(1M)
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