On Friday 18 May 2007 10:02:21 Graeme Stewart wrote:
> Hi Steve
>
> The new WAR file has improved the CLOSE_WAIT a bit, but it's not
> entirely gone:
>
> svr019:~# netstat -t | grep rgma | wc -l
> 168
> svr019:~# netstat -t | grep rgma | grep CLOSE_WAIT | wc -l
> 39
Hi Graeme,
Having sockets in a CLOSE_WAIT state is not necessarily bad as long as they
change from this state. Do the number of sockets in the CLOSE_WAIT state
fluctuate and not just go up?
>
> And in addition, the problem was monitoring in the job wrapper adding
> unnecessary wallclock to jobs. I don't see how this will be
> dramatically improved, even if CLOSE_WAIT goes away entirely.
As I understand the situation the wallclock time was still high when the R-GMA
publishing part of the job wrapper was disabled. So what else is done in the
Jobwapper that can cause this.
Alastair
>
> I hope this is not being re-introduced!
>
> Cheers
>
> Graeme
>
> On 18 May 2007, at 09:52, Fisher, SM (Steve) wrote:
> > Stephen,
> >
> > Please note that patch 1144 is on the PPS and will be available on the
> > PS very shortly. It is already deployed on the CERN mox box and solves
> > the problem.
> >
> > Steve
> >
> >> -----Original Message-----
> >> From: Testbed Support for GridPP member institutes
> >> [mailto:[log in to unmask]] On Behalf Of Stephen Childs
> >> Sent: 18 May 2007 09:40
> >> To: [log in to unmask]
> >> Subject: Re: SAME tests run in job wrapper
> >>
> >> Graeme Stewart wrote:
> >>> Yes, I've noticed this at Glasgow - and in particular R-GMA
> >>
> >> is adding
> >>
> >>> 5-15 minutes of wallclock time to every job, which is a
> >>
> >> terrible waste
> >>
> >>> of resources (particularly for our GRAM GT2 user groups,
> >>
> >> who run some
> >>
> >>> pretty short jobs).
> >>>
> >>> Something I really need to look into...
> >>
> >> I've just remembered about this (as I'm trying to do simple
> >> tests using
> >> globus-job-run which aren't simple any more). Graeme, did you
> >> ever find
> >> out where this was being done in order to disable it?
> >>
> >> Jeremy, could you comment on when this was introduced and
> >> whether there
> >> was input from sites on it?
> >>
> >> Stephen
> >>
> >> --
> >> Dr. Stephen Childs,
> >> Research Fellow, EGEE Project, phone:
> >> +353-1-8961797
> >> Computer Architecture Group, email:
> >> Stephen.Childs @ cs.tcd.ie
> >> Trinity College Dublin, Ireland web:
> >> http://www.cs.tcd.ie/Stephen.Childs
>
> --
> Dr Graeme Stewart - http://wiki.gridpp.ac.uk/wiki/User:Graeme_stewart
> ScotGrid - http://www.scotgrid.ac.uk/ http://scotgrid.blogspot.com/
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