Hi Felix, Did you try to do thread dump while doing update. Did it show anything?
Emir -- Monitoring - Log Management - Alerting - Anomaly Detection Solr & Elasticsearch Consulting Support Training - http://sematext.com/ > On 18 Apr 2018, at 17:06, Felix XY <felix.xy.xy...@gmail.com> wrote: > > Hello group, > > since two days we have huge problems with our solr 5.4.1 installation. > > ( yes, we have to update it. But this will not be a solution right now ) > > All path=/select requests are still very fast. But all /update Requests > take >30sec up to 3 minutes. > > The index is not very big (1.000.000 documents) and its size on disk is > about 1GB > > The virtual server (ESX) has 8GB RAM and 8 cores. IO is good. > > solr was started with -Xms4096M -Xmx4096M > ( but we changed it to higher and lower values during our tests ) > > We have a lot of /select requests at the moment (10.000/Minute) but this is > not unusual for this installation and we didn't have this update problems > before. > > On another identical sleeping core on the same server, we are able to make > fast updates. We experience slow updates only on the core with high > selecting traffic. So it seems not to be a general problem with java, GC, > .... > > We disabled all other insert/updates and we are able to reproduce this slow > update behaviour in the Solr Admin console with a single update of one > document. > > We are lost. > > We didn't change the Solr configuration. > The load seems to be not higher then during previous peaks > The developers didn't change anything (so they say) > Search is still fast. > > But single simple updates takes >30sec.... > > Any ideas about this? We tried quite a lot the last two days.... > > Cheers > Felix
