top output: 8 cpus busy in user-mode activities, 6 processes running
Susie White
swhite at currenex.com
Tue Oct 31 19:57:06 UTC 2006
Thanks for the suggestion, but I am thinking that the cpu matrix and the
process listing are the same 'top' snap shot, and therefore, the cpu
cycles on the matrix should match the process listing exactly. What do
you think? Is this not correct and it is still a timing issue?
Thanks!
Susie
Troy Knabe wrote:
>My understanding is that "top" refreshes every 5 seconds by default. So at the instant of the refresh, it is reporting what processes are actually on the cpu(s) at that time. Not what processes are or were on the process during the 5 seconds between refreshes.
>
>-Troy
>
>
>----- Original Message -----
>From: Susie White <swhite at currenex.com>
>Date: Tuesday, October 31, 2006 9:31 am
>Subject: top output: 8 cpus busy in user-mode activities, 6 processes running
>To: redhat-list at redhat.com
>
>
>
>>Can you give me some insights about how we can have a case of
>>more busy cpus than users on the run queue or waiting for the
>>run queue. Below is a point in time snap shot using
>>'top'. We have 8 cpus, all with user-mode activity.
>>And yet we have 6 processes in an R or S state. All the
>>rest are in SW state. Any speculation is welcome.
>>
>>We are running this version of linux: 2.4.21-32.0.1.ELsmp
>>#1 SMP Tue May 17 17:52:23 EDT 2005 i686 i686 i386 GNU/Linux
>>
>>Thanks!
>>
>>
>> 05:10:01 up 24 days, 5:58, 3
>>users, load average: 3.50, 2.24, 1.33
>>1061 processes: 1060 sleeping, 1 running, 0 zombie, 0 stopped
>>CPU states: cpu user
>>nice system irq softirq
>>iowait idle
>>
>>total 21.6% 0.0%
>>43.2% 0.0%
>>0.8% 9.6% 724.0%
>>
>>cpu00 0.9%
>>0.0% 3.6%
>>0.0% 0.0%
>>0.0% 95.4%
>>
>>cpu01 2.7%
>>0.0% 7.2%
>>0.0% 0.0%
>>0.0% 90.0%
>>
>>cpu02 7.2%
>>0.0% 0.9%
>>0.0% 0.0%
>>5.4% 86.4%
>>
>>cpu03 3.6%
>>0.0% 4.5%
>>0.0% 0.0%
>>4.5% 87.3%
>>
>>cpu04 1.8%
>>0.0% 3.6%
>>0.0% 0.9%
>>0.0% 93.6%
>>
>>cpu05 1.8%
>>0.0% 8.1%
>>0.0% 0.0%
>>0.0% 90.0%
>>
>>cpu06 1.8%
>>0.0% 6.3%
>>0.0% 0.0%
>>0.0% 91.8%
>>
>>cpu07 1.8%
>>0.0% 9.0%
>>0.0% 0.0%
>>0.0% 89.0%
>>Mem: 15887700k av, 14688888k used, 1198812k
>>free, 0k shrd,
>>75228k buff
>> 10974816k actv, 2098712k in_d, 244572k in_c
>>Swap: 12582712k av, 128796k used, 12453916k
>>free 12403560k cached
>>
>> PID USER PRI NI
>>SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
>> 9477 oracle 25 0 1944
>>1944 788 R 9.9
>>0.0 0:00 7 top
>> 1937 root 16
>>0 1204 1076 692 S
>>7.2 0.0 328:13 2 hpasmd
>> 9531 oracle 25 0 14208
>>13M 12596 S 4.5 0.0
>>0:00 3 oracle
>>25749 oracle 15 0 14200
>>13M 8584 S 2.7
>>0.0 0:06 6 oracle
>> 1 root
>>25 0 520 520 460
>>S 0.9 0.0 190:19 0 init
>>25741 oracle 15 0 25132 24M
>>21952 S 0.9 0.1
>>4:38 3 oracle
>> 2 root
>>RT 0 0
>>0 0 SW 0.0
>>0.0 0:00 0 migration/0
>> 3 root
>>RT 0 0
>>0 0 SW 0.0
>>0.0 0:00 1 migration/1
>> 4 root
>>RT 0 0
>>0 0 SW 0.0
>>0.0 0:00 2 migration/2
>> 5 root
>>RT 0 0
>>0 0 SW 0.0
>>0.0 0:00 3 migration/3
>> 6 root
>>RT 0 0
>>0 0 SW 0.0
>>0.0 0:00 4 migration/4
>> 7 root
>>RT 0 0
>>0 0 SW 0.0
>>0.0 0:00 5 migration/5
>> 8 root
>>RT 0 0
>>0 0 SW 0.0
>>0.0 0:00 6 migration/6
>> 9 root
>>RT 0 0
>>0 0 SW 0.0
>>0.0 0:00 7 migration/7
>>
>>
>>
>>
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>>
>>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>Troy Knabe
>Senior Systems Administrator
>Computing and Information Services
>4J School District
>knabe at 4j.lane.edu
>Ph: 541.687.3587
>Cell: 541.968.0780
>
>
>
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