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<== Date ==> <== Thread ==>

Subject: RE: Sequence monitor not getting callback
From: "Shankar, Murali" <mshankar@slac.stanford.edu>
To: "J. Lewis Muir" <jlmuir@anl.gov>
Cc: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Thu, 13 Oct 2011 11:27:44 -0700
Thank you. I tried this out on my dev box and /proc/cpuinfo happily reports only one CPU. 

The test with CA alone performs better in that it succeeds about 50% of the time. But a little less than 50% of the time, I still get monitors that have not received callbacks. 

The original test with sequence programs performs much better. So far, I have been able to reproduce the issue only once in about 10 tests. But the issue still occurs.

I have attached the thread dumps as well. 

Regards,
Murali




-----Original Message-----
From: J. Lewis Muir [mailto:jlmuir@anl.gov] 
Sent: Thursday, October 13, 2011 7:52 AM
To: Shankar, Murali
Cc: Jeff Hill; tech-talk@aps.anl.gov
Subject: Re: Sequence monitor not getting callback

On 10/12/11 7:15 PM, Shankar, Murali wrote:
> Ernest says he'll help me run this on an single core RTEMS box
> and if possible, a single core VXworks box tomorrow morning.
> I'll post the results here. If I can find a single core linux
> box somewhere, I'll try this out there as well.

Hi, Murali.

I haven't tried it, but I think many SMP Linux kernels support
the 'maxcpus' boot parameter (or the older 'nosmp' boot
parameter).  So perhaps you could use this option to effectively
change your Linux box into a single CPU box for your test?

See

http://www.kernel.org/doc/Documentation/kernel-parameters.txt

and the bootparam(7) man page.

Lewis

Attachment: GDBThreadST_Oct13_2011.tar.gz
Description: GDBThreadST_Oct13_2011.tar.gz


Replies:
Re: Sequence monitor not getting callback Benjamin Franksen
RE: Sequence monitor not getting callback Jeff Hill
References:
Re: Sequence monitor not getting callback Shankar, Murali
RE: Sequence monitor not getting callback Jeff Hill
RE: Sequence monitor not getting callback Shankar, Murali
Re: Sequence monitor not getting callback J. Lewis Muir
RE: Sequence monitor not getting callback Shankar, Murali
RE: Sequence monitor not getting callback Jeff Hill
RE: Sequence monitor not getting callback Shankar, Murali
Re: Sequence monitor not getting callback J. Lewis Muir

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