Well, I'm actually not using a PAExen kernel but I don't believe that I need to be since I'm running the 64-bit version of CentOS. Am I mistaken in that assumption?<br><br>Thanks,<br>Matt<br clear="all"><br>--<br>
Mathew S. McCarrell<br>Clarkson University '10<br><br><a href="mailto:mccarrms@gmail.com">mccarrms@gmail.com</a><br><a href="mailto:mccarrms@clarkson.edu">mccarrms@clarkson.edu</a><br>
<br><br><div class="gmail_quote">On Wed, Apr 29, 2009 at 5:06 PM, Ljubomir Ljubojevic <span dir="ltr"><<a href="mailto:office@plcomputers.net">office@plcomputers.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Just to make sure, you are using PAExen kernel on 12GB RAM Linux? 4GB is<br>
max for regular kernel without PAE extensions.<br>
<div class="im">Mathew S. McCarrell wrote:<br>
> Yeah, the Dom0 should have plenty of memory left since only 2-3 GB of<br>
> memory is being used out of 12 GB installed. The out of memory messages<br>
> were from the domU that I xm consoled into prior to shutting down that<br>
> particular VM because it was out of memory.<br>
><br>
> Matt<br>
><br>
> --<br>
> Mathew S. McCarrell<br>
> Clarkson University '10<br>
><br>
</div>> <a href="mailto:mccarrms@gmail.com">mccarrms@gmail.com</a> <mailto:<a href="mailto:mccarrms@gmail.com">mccarrms@gmail.com</a>><br>
> <a href="mailto:mccarrms@clarkson.edu">mccarrms@clarkson.edu</a> <mailto:<a href="mailto:mccarrms@clarkson.edu">mccarrms@clarkson.edu</a>><br>
<div class="im">><br>
><br>
> On Wed, Apr 29, 2009 at 3:09 PM, Maros Timko <<a href="mailto:timkom@gmail.com">timkom@gmail.com</a><br>
</div><div class="im">> <mailto:<a href="mailto:timkom@gmail.com">timkom@gmail.com</a>>> wrote:<br>
><br>
> Hi Mathew,<br>
><br>
> I would say no. Our system has freezed completely, it did not<br>
> reboot. Our issue was caused by concurrent access to scheduler<br>
> method that created a deadlock.<br>
> I can see some out of memory messages, do you still have enough<br>
> memory for Dom0?<br>
><br>
> 2009/4/29 Mathew S. McCarrell <<a href="mailto:mccarrms@gmail.com">mccarrms@gmail.com</a><br>
</div>> <mailto:<a href="mailto:mccarrms@gmail.com">mccarrms@gmail.com</a>>><br>
<div class="im">><br>
> Hey,<br>
><br>
> I'm wondering if it is possible that your problem is related to<br>
> mine. Earlier today I had to restart one of our domUs on one of<br>
> our systems. I used xm shutdown instead of xm destroy and then<br>
> did xm list to determine if the domU had shutdown or not. Upon<br>
> issuing xm list a second time, the entire server crashed and<br>
> rebooted.<br>
><br>
> I've checked the logs and have yet to find anything. I've<br>
> attached a transcript of the commands as I executed them on the<br>
> server. The system is running CentOS 5.3 x64 w/Xen (kernel<br>
> 2.6.18-128.1.6.el5xen).<br>
><br>
> Any thoughts?<br>
><br>
> Thanks,<br>
> Matt<br>
><br>
> --<br>
> Mathew S. McCarrell<br>
> Clarkson University '10<br>
><br>
</div>> <a href="mailto:mccarrms@gmail.com">mccarrms@gmail.com</a> <mailto:<a href="mailto:mccarrms@gmail.com">mccarrms@gmail.com</a>><br>
> <a href="mailto:mccarrms@clarkson.edu">mccarrms@clarkson.edu</a> <mailto:<a href="mailto:mccarrms@clarkson.edu">mccarrms@clarkson.edu</a>><br>
><br>
><br>
> 2009/4/7 Maros Timko <<a href="mailto:timkom@gmail.com">timkom@gmail.com</a> <mailto:<a href="mailto:timkom@gmail.com">timkom@gmail.com</a>>><br>
<div class="im">><br>
> Hi all,<br>
><br>
> thanks to all for valuable replies.<br>
> It seems like we identified the issue. We assured that it is<br>
> not HW related as it was already reproduced on different<br>
> machines and platforms, with different BIOS versions.<br>
> We are running a system performance/statistics collector<br>
> that executes "xentop" command on Dom0 regularly. This is<br>
> causing issues. If we execute:<br>
> xentop -b -d 0.1 > /dev/null<br>
> in multiple instances, it will freeze the system.<br>
> It was reproduced on CentOS 5.3<br>
> (kernel-xen-2.6.18-128.1.6.el5) system.<br>
> There is created a bug for this issue:<br>
> <a href="http://bugs.centos.org/view.php?id=3454" target="_blank">http://bugs.centos.org/view.php?id=3454</a><br>
><br>
> With regards,<br>
><br>
> Tino<br>
><br>
><br>
</div>> 2009/4/3 Maros TIMKO <<a href="mailto:timko@pobox.sk">timko@pobox.sk</a> <mailto:<a href="mailto:timko@pobox.sk">timko@pobox.sk</a>>><br>
<div class="im">><br>
> Hi all,<br>
><br>
> we are running CentOS 5.2 Xen virtualization system with<br>
> the latest CentOS packages with couple of VMs on DELL<br>
> PowerEdge. "Sometimes" the whole machine freezes without<br>
> anything in log files, anything on the console.<br>
> "Sometimes" really means we cannot define why or when.<br>
> Sometimes the machine was idle with just one VM,<br>
> sometimes quite busy with couple of VMs.<br>
><br>
> Has anybody had the same experience? If yes, any hints<br>
> on how to resolve it or how to trace the cause?<br>
><br>
><br>
><br>
> Thanks.<br>
><br>
><br>
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