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CPU utilization high on media server

Created: 25 Oct 2011 | 6 comments

Hi Team,

One of Media server, the CPU utilization high, 

Media server :- NBU 6.5.6, solaris 5.10 

load averages: 5.18, 6.14, 8.49 00:56:09
136 processes: 130 sleeping, 4 running, 2 on cpu
CPU states: 24.9% idle, 1.4% user, 73.7% kernel, 0.0% iowait, 0.0% swap
Memory: 8192M real, 5609M free, 1622M swap in use, 21G swap free

PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND
3361 root 1 1 0 110M 31M run 6:25 3.07% bptm
3328 root 1 1 0 110M 31M run 6:21 2.99% bptm
3946 root 1 42 0 302M 31M sleep 4:04 1.96% bptm
3396 root 1 41 0 174M 31M sleep 5:36 1.19% bptm
27865 root 1 39 0 174M 31M sleep 3:25 1.08% bptm
7298 root 1 29 0 110M 31M cpu0 2:09 1.05% bptm
3370 root 1 45 0 40M 17M sleep 4:42 1.05% bpbrm
24729 root 1 53 0 110M 31M sleep 2:03 0.95% bptm
10790 root 1 33 0 174M 31M sleep 2:09 0.67% bptm
4580 root 1 41 0 110M 31M run 14:42 0.63% bptm
4573 root 1 59 0 174M 35M sleep 4:15 0.47% bptm
3369 root 1 44 0 238M 31M sleep 3:02 0.36% bptm
4377 root 1 56 0 174M 35M sleep 1:28 0.31% bptm
11773 root 1 1 0 174M 31M sleep 2:29 0.30% bptm
2102 root 1 55 0 174M 34M run 3:33 0.28% bptm

is there any remedy for this, or I have to suffere like this . Offcourse,  no jobs impact on this media server.

Comments 6 CommentsJump to latest comment

Mark_Solutions's picture

You have 15 x bptm processes running - can i confirm you have 15 jobs / duplications running during this period?

If not something has been orphaned

If it is doing 15 jobs you could expect the processes to be utilising the CPU although there are things that can be done to tune everything but we would need to know more about you setup etc.

Hope this helps

Authorised Symantec Consultant

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Marianne's picture

Those processes shown by 'top' do not seem to be the culprits - most of them are 'sleeping' and the running ones are hardly using any cpu:

3361 root 1 1 0 110M 31M run 6:25 3.07% bptm
3328 root 1 1 0 110M 31M run 6:21 2.99% bptm

7298 root 1 29 0 110M 31M cpu0 2:09 1.05% bptm

4580 root 1 41 0 110M 31M run 14:42 0.63% bptm

2102 root 1 55 0 174M 34M run 3:33 0.28% bptm

What does 'prstat' report? e.g.
prstat -s cpu -n 5

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

Baski's picture

Hi Marianne/Mark,

Please find requested information below and No.of jobs now 40. but no impact on it.

prstat -s cpu -n 5
PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
27076 root 174M 31M sleep 9 0 0:08:15 3.3% bptm/1
16429 root 110M 31M run 33 0 0:00:21 1.8% bptm/1
16557 root 174M 31M cpu18 26 0 0:00:26 1.5% bptm/1
16366 root 174M 31M run 54 0 0:00:37 1.5% bptm/1
15176 root 174M 31M run 1 0 0:00:16 1.4% bptm/1
Total: 144 processes, 471 lwps, load averages: 4.07, 3.04, 2.73

Marianne's picture

CPU usage of individual bptm processes seem low.

I don't see anything to be concerned about....

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

Baski's picture

ok, Marrianne,

will see today load on it and let you know again..

Nicolai's picture

High CPU usage when multiple BPTM processes running is quite normal. However most of the CPU usage reported may be "wait for IO" - and thus not "real" CPU usage.

Processor utilization and wait I/O -- a look inside

http://sunsite.uakom.sk/sunworldonline/swol-08-199...

Assumption is the mother of all mess ups.

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