Many dsm_om_connsvc3 processes

Derek Yuen derek.yuen at utoronto.ca
Sat Dec 2 14:58:08 CST 2006


Hi Patrick,

Thanks for the reply.

Apologies -- I misinterpreted the top output.  Does that mean "many 
threads consuming 40MB ram each" ?  A bit frightening ?  Is there a way we 
can limit these ?


Thanks,
Derek


On Fri, 1 Dec 2006, Patrick_Boyd at Dell.com wrote:

> That is actually many threads in the process not distinct processes. 
> 
> -----Original Message-----
> From: linux-poweredge-bounces at dell.com
> [mailto:linux-poweredge-bounces at dell.com] On Behalf Of Derek Yeung
> Sent: Thursday, November 30, 2006 11:29 PM
> To: linux-poweredge-Lists
> Subject: Many dsm_om_connsvc3 processes 
> 
> 
> Hi,
> 
> On our PowerEdge 2950's, we were experiencing moderate slowdowns and
> high load.  I first attributed these problems to a thread on the list
> about the PERC 5 (SAS) underperforming.  However, I see that our iowait
> percentiles were quite high.  A bit of poking around and I see that
> there were many
> dsm_om_connsvc3 processes consuming 40MB of ram each!  This appears to
> be a component of OMSA (i've since disabled it) ... Is this a bug ?
> 
> Has anyone else seen this ?  If you're interested, run top and sort by
> memory (M)
> 
> Here's a snipplet of the top output:
>
>   00:14:45  up 1 day, 10:33,  2 users,  load average: 1.73, 1.71, 1.66
> 209 processes: 207 sleeping, 1 running, 1 zombie, 0 stopped
> CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
>             total    1.6%    0.0%    0.9%   0.0%     0.0%   30.3%
> 67.0%
>             cpu00    1.7%    0.0%    0.3%   0.0%     0.0%   44.1%
> 53.6%
>             cpu01    1.1%    0.0%    1.3%   0.0%     0.0%   44.5%
> 52.8%
>             cpu02    1.1%    0.0%    1.3%   0.0%     0.0%   16.3%
> 81.0%
>             cpu03    2.5%    0.0%    0.5%   0.0%     0.0%   16.3%
> 80.4%
> Mem:  4091420k av, 4047204k used,   44216k free,       0k shrd,  300372k
> buff
>                      659228k actv, 2391356k in_d,   86776k in_c
> Swap: 4192956k av,       0k used, 4192956k free                 3305732k
> cached
>
>    PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU
> COMMAND
> 18998 root      15   0 40524  39M 11928 S     0.0  0.9   0:00   3
> dsm_om_connsvc3
> 18999 root      25   0 40524  39M 11928 S     0.0  0.9   0:00   0
> dsm_om_connsvc3
> 19000 root      15   0 40524  39M 11928 S     0.0  0.9   0:13   0
> dsm_om_connsvc3
> 19001 root      15   0 40524  39M 11928 S     0.0  0.9   0:00   3
> dsm_om_connsvc3
> 19002 root      15   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19003 root      25   0 40524  39M 11928 S     0.0  0.9   0:00   3
> dsm_om_connsvc3
> 19004 root      15   0 40524  39M 11928 S     0.0  0.9   0:01   1
> dsm_om_connsvc3
> 19005 root      25   0 40524  39M 11928 S     0.0  0.9   0:00   3
> dsm_om_connsvc3
> 19006 root      15   0 40524  39M 11928 S     0.0  0.9   0:16   0
> dsm_om_connsvc3
> 19009 root      15   0 40524  39M 11928 S     0.0  0.9   0:00   3
> dsm_om_connsvc3
> 19010 root      15   0 40524  39M 11928 S     0.0  0.9   0:00   0
> dsm_om_connsvc3
> 19011 root      15   0 40524  39M 11928 S     0.0  0.9   0:00   0
> dsm_om_connsvc3
> 19130 root      15   0 40524  39M 11928 S     0.0  0.9   0:00   0
> dsm_om_connsvc3
> 19133 root      15   0 40524  39M 11928 S     0.0  0.9   0:00   0
> dsm_om_connsvc3
> 19134 root      15   0 40524  39M 11928 S     0.0  0.9   0:00   3
> dsm_om_connsvc3
> 19136 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   0
> dsm_om_connsvc3
> 19137 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   0
> dsm_om_connsvc3
> 19138 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   0
> dsm_om_connsvc3
> 19139 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19140 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19141 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19142 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19143 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   3
> dsm_om_connsvc3
> 19144 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19145 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19146 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19147 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19148 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19149 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19150 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19151 root      21   0 40524  39M 11928 S     0.0  0.9   0:00   2
> dsm_om_connsvc3
> 19152 root      15   0 40524  39M 11928 S     0.0  0.9   0:00   3
> dsm_om_connsvc3
> 
> Ideas ?
> 
> Thanks,
> Derek
> 
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