[ome-users] 100 % CPU Usage on 6 Cores for 3 Days

[Andreas Mueller]

  Hi Josh,

  I've done the job once more, but probably the results are similary.

  Susanne will upload them.

  Our omero is burning:  6 cores are nearly 100% for days.


  I've made a 'jps' and vor every pid a:

  jstack -l 65086 > jstack_65086

  ..please find it in the tar.gz


  Thanks for your help!
  
  Looking forward to see you in Köln.
  Andreas

On 24.05.19 06:27, 'Kunis, Susanne' wrote:
> Hi Josh,
> 
> Ok,  something went wrong, I think.
> Sorry, Andreas is on vacation, he knows better than I.
> 
> I made the jstack trace of the job with the high cpu usage. That seemed to be wrong.
> 
> But we can easily reproduce this behaviour, so that Andreas can make the right jstack trace next week.
> 
> Regards,
> Susanne
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: ome-users [mailto:ome-users-bounces at lists.openmicroscopy.org.uk] Im Auftrag von Josh Moore
> Gesendet: Donnerstag, 23. Mai 2019 15:16
> An: OME User Support List <ome-users at lists.openmicroscopy.org.uk>
> Betreff: Re: [ome-users] 100 % CPU Usage on 6 Cores for 3 Days
> 
> On Thu, May 23, 2019 at 8:54 AM Kunis, Susanne <Susanne.Kunis at biologie.uni-osnabrueck.de> wrote:
> >
> > Dear Mark,
> 
> Hi Susanne,
> 
> thanks for QA 27556.
> 
> 
> > Yesterday we have to restart the server three times because the system was slowing down and there was no response any more.
> > The reason seems to be loading the preview of the certain vsi format (you get such one). Each time the server starts such a core process with 100%. Up to 6 cores we have no response anymore. I have a Blitz.log and a jstack trace for this behaviour and commit it to  http://qa.openmicroscopy.org.uk/qa/upload/.
> 
> Unfortunately, there's little to nothing going on in the jstack. Is it possible that this is actually from PixelData?
> 
> ```
> "PixelData-0-Ice.ThreadPool.Client-0"
> ```
> 
> ~J.
> 
> >
> > Regards,
> > Susanne
> >
> > -----Ursprüngliche Nachricht-----
> > Von: ome-users [mailto:ome-users-bounces at lists.openmicroscopy.org.uk] 
> > Im Auftrag von Mark Carroll (Staff)
> > Gesendet: Freitag, 17. Mai 2019 12:50
> > An: OME User Support List <ome-users at lists.openmicroscopy.org.uk>
> > Betreff: Re: [ome-users] 100 % CPU Usage on 6 Cores for 3 Days
> >
> > Dear Andreas,
> >
> > Next time htop gives you an surprisingly busy OMERO server process then do feel free to take a few jstack traces (as previously described), zip them up and submit them in the usual way and we'll be glad to look at them to try to see exactly what that process is busy doing. Feel free to restart the server once you've got the traces of course, to restore decent service to your users.
> >
> > -- Mark
> _______________________________________________
> ome-users mailing list
> ome-users at lists.openmicroscopy.org.uk
> https://lists.openmicroscopy.org.uk/mailman/listinfo/ome-users
> _______________________________________________
> ome-users mailing list
> ome-users at lists.openmicroscopy.org.uk
> https://lists.openmicroscopy.org.uk/mailman/listinfo/ome-users