[Box-Admins] box3.squeak.org off line - HELP neeeded

David T. Lewis lewis at mail.msen.com
Sun Oct 6 18:00:36 UTC 2013


On Sun, Oct 06, 2013 at 11:18:25AM -0400, David T. Lewis wrote:
> On Sun, Oct 06, 2013 at 04:52:21PM +0200, Tobias Pape wrote:
> > 
> > So, uptime said:
> > root at box3-squeak:/home/ssdotcom# uptime
> >  16:32:49 up 166 days, 22 min,  1 user,  load average: 0.70, 4.74, 8.52
> > 
> > And the _last two_ numbers are concerning. Basically, the server was overloaded.
> > the Squeak vm uses about a gig of virtual memory (really?) and seems to compete with
> > the jenkins running on the server. htop says, jenkins uses 25% of the systems memory
> > while Squeak uses 19% (both of which I deem high).
> >   So in the event of some jenkins jobs firing off and Squeaksource answering some requests,
> > the server might become un-responsive?
> > 
> 
> Something like that I think. I'm not sure what was generating the load, although
> there is no question that adding squeaksource to box3 adds a significant resource
> demand above that of the Jenkins jobs.
> 
> Allocating a big address space (1G) is normal for the VM, and in this case the
> image is actually using a bit under 200MB, which is 20% of the system memory.
> If there is some combination of squeaksource and jenkins activity that pushes
> the total demand to the point of requiring swapping, then it's possible that
> this would make the system unresponsive as I was seeing.
> 
> A number of the Jenkins jobs run squeak VMs in addition to the Java stuff,
> so some combination of these might add up to a problem.
>

I am now running top every 30 seconds for the next 24 hours, with output directed
to ~ssdotcom/tmp/top.out. Possibly this will show us something interesting.

Dave



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