Re: [Condor-users] "file descriptors" problem again

["Dr Ian C. Smith" <i.c.smith@xxxxxxxxxxxxxxx>]

Thanks for this. Will report back when I have a
chance to try it.

-ian.

--On 04 September 2006 15:48 -0500 Steven Timm <timm@xxxxxxxx> wrote:

> There is a known bug in condor 6.7.20 and 6.8.0 with non-blocking output.
> There is a settings
> NONBLOCKING_COLLECTOR_UPDATE
> NEGOTIATOR_USE_NONBLOCKING_STARTD_CONTACT
> which if set to FALSE will cause the negotiator to crash periodically
> for being out of file descriptors but if left at their default TRUE
> will cause the schedd and collector to crash.
>
> Bug is supposed to be fixed in 6.8.1.  Condor team gave me a pre-release
> of schedd, collector, negotiator, which fixed the problem at our site.
> If you have to pick your poison, leave them set false as the negotiator
> crash condor can easily recover from.
>
> Steve
>
>
> ------------------------------------------------------------------
> Steven C. Timm, Ph.D  (630) 840-8525  timm@xxxxxxxx
> http://home.fnal.gov/~timm/ Fermilab Computing Div/Core Support Services
> Dept./Scientific Computing Section Assistant Group Leader, Farms and
> Clustered Systems Group
> Lead of Computing Farms Team
>
> On Mon, 4 Sep 2006, Dr Ian C. Smith wrote:
>
> > Hi,
> >
> > I recently upgraded to Condor 6.8.0 on our central manager in order to
> > fix a problem with Condor. See:
> >
> > https://lists.cs.wisc.edu/archive/condor-users/2006-August/msg00039.shtml
> >
> > This solved the problem but instead I started to see exactly the
> > same "out of file descriptors" messages errors as reported
> > in
> >
> > https://lists.cs.wisc.edu/archive/condor-users/2006-April/msg00191.shtml
> >
> > The symptoms are the same - after the daily reboot of the windows
> > execution hosts a large number sit idle even though there is a big
> > (20,000) queue of jobs waiting to run. When I went back to 6.6.9 the
> > problem disappeared.
> >
> > I'm wondering if, as has been suggested, that the "out of file
> > descriptors" is a red herring - the OS is the same (solaris 8) and none
> > of the limits have been changed. At most there are around 100 jobs
> > running concurrently with vanilla universe. The default limit (ulimit
> > -n) is 256 (although I understand that this is per process).
> >
> > Any ideas about this ? Would a diff(1) of the two codes show up anything.
> > I could move the Condor-G to another hosts to get around the first
> > problem but I'm more concerned that the Windows central manager is going
> > to get stuck with an out of date version of condor.
> >
> > cheers,
> >
> > -ian.
> >
> > -----------------------------------
> > Dr Ian C. Smith,
> > e-Science team,
> > University of Liverpool
> > Computing Services Department
> >
> >
> >
> >
> >
> >
> >
> >
> >
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