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From: Hal Rosenstock <hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
To: Sebastian Riemer
	<sebastian.riemer-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
Cc: "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: OpenSM 3.3.16 at 100% CPU load, "console off"
Date: Wed, 09 Oct 2013 11:15:10 -0400	[thread overview]
Message-ID: <525572FE.5080805@dev.mellanox.co.il> (raw)
In-Reply-To: <52556BEE.5070409-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>

On 10/9/2013 10:45 AM, Sebastian Riemer wrote:
> On 09.10.2013 16:00, Hal Rosenstock wrote:
> 
>> Do you recall the sequence to get to this ?
>>
>> Was console option changed to off and then OpenSM SIGHUP'd ? Something
>> else ?
>>
>> Is this reproducible ?
> 
> Yes, now I can reproduce it. The opensm has been initially started with
> "console off" and I activate "console local" and restart the service.
> CPU load is at 100% immediately. I set "console off" again and restart
> the service and CPU load is low again.
> 
> I did this three times in a row, now. And the third time it even
> remained at 100% load in the "off" state. I've set "local" and "off"
> again and CPU load was low again.

What does service restart do in terms of OpenSM ?

Note that the console parameter is _not_ changeable "on the fly" right
now so if OpenSM is being SIGHUP'd by service restart then this is a
current limitation (and is clearly not detected/protected against in the
current code base). It sounds like that may be what is going on.

-- Hal

> Cheers,
> Sebastian
> 
> 

--
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  parent reply	other threads:[~2013-10-09 15:15 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-09 11:10 OpenSM 3.3.16 at 100% CPU load, "console off" Sebastian Riemer
     [not found] ` <525539A4.8090700-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2013-10-09 13:28   ` Hal Rosenstock
     [not found]     ` <52555A04.8080606-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2013-10-09 13:30       ` David Dillow
     [not found]         ` <1381325445.27365.4.camel-a7a0dvSY7KqLUyTwlgNVppKKF0rrzTr+@public.gmane.org>
2013-10-09 13:53           ` Sebastian Riemer
2013-10-09 14:00       ` Hal Rosenstock
     [not found]         ` <52556172.2070707-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2013-10-09 14:45           ` Sebastian Riemer
     [not found]             ` <52556BEE.5070409-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2013-10-09 15:15               ` Hal Rosenstock [this message]
     [not found]                 ` <525572FE.5080805-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2013-10-09 15:52                   ` Sebastian Riemer
     [not found]                     ` <52557BCF.6030302-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2013-10-09 16:51                       ` Hal Rosenstock

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