Many dsm_om_connsvc3 processes

Patrick_Boyd at Dell.com Patrick_Boyd at Dell.com
Fri Dec 1 09:43:45 CST 2006


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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