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тАО12-30-2009 01:39 AM
тАО12-30-2009 01:39 AM
Following command, prints the unique values of CPU numbers.
ps -ef|awk '{print $4}'|sort -r |uniq
C
3
20
2
12
1
0
In my system, I have CPU0, CPU1, CPU2, CPU4, CPU6 and CPU7.
I don't uderstand the CPU numbers 20,12,3 which are not present in my system.
Could you please explain about this?
Ravi
Solved! Go to Solution.
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тАО12-30-2009 03:25 AM
тАО12-30-2009 03:25 AM
Re: Process and CPU information
C isn't the number of cpu's.
%cpu %CPU cpu utilization of the process in "##.#" format.
Currently, it is the CPU time used divided by the time the process has been running (cputime/realtime ratio), expressed as a percentage. It will not add up to 100% unless you are lucky. (alias pcpu).
Rgs,
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тАО12-30-2009 03:38 AM
тАО12-30-2009 03:38 AM
Re: Process and CPU information
Pete
Pete
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тАО12-30-2009 03:43 AM
тАО12-30-2009 03:43 AM
Re: Process and CPU information
pcpu
The percentage of CPU time used by this process during the last scheduling interval. The default heading for this column is %CPU.
Regards,
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тАО12-30-2009 07:28 AM
тАО12-30-2009 07:28 AM
Re: Process and CPU information
No need to use uniq(1) here, you can use: ... | sort -r -u
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тАО12-30-2009 08:12 AM
тАО12-30-2009 08:12 AM
Re: Process and CPU information
I am sorry, I could have presented my question in more approprite way. Even it is my understanding that CPU cloumn would show the CPU number, instead of number of CPU's.
In my system, I have CPU0, CPU1, CPU2, CPU4, CPU6 and CPU7. In that case, ps -ef o/p shoudl have 0,1,2,4,6 and 7. Please correct me if I am wrong.
Apart from that, I see 20, 12 and 3 numbers in CPU column.
I have little knowledge about pcpu, but I am interested in the CPU cloumn.
Cheers,
Ravi.
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тАО12-30-2009 08:16 AM
тАО12-30-2009 08:16 AM
Re: Process and CPU information
That is wrong. The CPU column shows processor utilization not processor number.
>Please correct me if I am wrong.
You are wrong (see above).
Pete
Pete
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тАО12-30-2009 08:51 AM
тАО12-30-2009 08:51 AM
Re: Process and CPU information
Are you thinking of the CPU number in the top(1) output?
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тАО12-30-2009 10:34 AM
тАО12-30-2009 10:34 AM
Re: Process and CPU information
Out of 6 CPU's, if 2 CPU's utilization is above 90% (as per OVPA reports), how do I know which processes are keeping those 2 CPU's busy.
Can you please help me?
Ravi.
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тАО12-30-2009 11:02 AM
тАО12-30-2009 11:02 AM
SolutionDoesn't top(1) tell you which process is busy and using which CPU? (Provided you aren't using threads.)
Any reason you care?