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why cpu 1 of my system is high use?

 
XIAODANWU
Occasional Advisor

why cpu 1 of my system is high use?

P-UX JTAP2500 B.11.11 U 9000/800 07/06/09

09:46:50 cpu %usr %sys %wio %idle
09:46:55 0 2 9 0 88
1 2 38 0 59
2 38 3 0 59
3 34 5 0 61
system 19 14 0 67
09:47:00 0 4 7 0 89
1 4 41 0 55
2 36 6 0 58
3 38 5 0 57
system 20 15 0 65

Average 0 3 8 0 89
Average 1 3 39 0 57
Average 2 37 5 0 58
Average 3 36 5 0 59
Average system 20 14 0 66

why CPU 1 is High utilization with %sys and the others is normal?
8 REPLIES
Roopesh Francis_1
Trusted Contributor

Re: why cpu 1 of my system is high use?

I dont see any ubnormal high utilization in your CPUs.typically cpus will share system load.
Jitesh purohit_1
Regular Advisor

Re: why cpu 1 of my system is high use?

It is always not necessary ,if your cpu is overloded, Are you running some Database Applications, Does this happening only durig peak period

Jitesh
Aneesh Mohan
Honored Contributor

Re: why cpu 1 of my system is high use?

Hi ,

>>why cpu 1 of my system is high use?

That depends on the application which is using the CPU .If it is thread enabled it should use multiple cpus for a job.

In your case the CPU utilisation sounds normal only.

Regards,
Aneesh
V. Nyga
Honored Contributor

Re: why cpu 1 of my system is high use?

Hi,

well one cpu is doing most of sys, the others the most of usr - the balance is well.
Why shouldn't system processes be summerized to one cpu?

Only cpu 0 has a high idle ...

Volkmar
*** Say 'Thanks' with Kudos ***
Steven E. Protter
Exalted Contributor

Re: why cpu 1 of my system is high use?

Shalom,

Normally this is an application issue.

Many applications "bond" to a cpu and are not aware of hyper threading capabilities or second cpu's. This causes imbalance in cpu use.

It is perfectly normal.

SEP
Steven E Protter
Owner of ISN Corporation
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Hakki Aydin Ucar
Honored Contributor

Re: why cpu 1 of my system is high use?

I think there is no important issue in your CPU, as others said ,extra busy load is normal, with this in mind ,I highly recommend to run three times a day, and monitor the values of idle and usage to make a statistic:

vmstat -u 5 10

and also you can check in glance cpu bottleneck monitor:

gpm > Adviser > Symptom Status
TTr
Honored Contributor

Re: why cpu 1 of my system is high use?

There is nothing wrong with your server. It just happened that a process that takes care of system work is running on cpu1. Depending on the process, it may or may not move from cpu1 to another cpu. You can run the "top" command and see which process(es) run on cpu1.
XIAODANWU
Occasional Advisor

Re: why cpu 1 of my system is high use?

thanks all replyï¼ ï¼ ï¼ ï¼ ï¼