If you are sure the spikes are caused by the JVM, I recommend to attach a profiler to the JVM, then you can monitor the code.
On JVM level, it is hard to trace queries, so maybe you want to test out bleeding edge? Here is a query profiler: https://github.com/elasticsearch/elasticsearch/pull/6699 Jörg On Tue, Sep 16, 2014 at 2:24 AM, Craig Wittenberg <crai...@microsoft.com> wrote: > Hardware problems in Azure? Hmm. I suppose so :) > > In this case I restarted just ES (i.e., shutdown ES using > http://localhost:9200/_cluster/nodes/_local/_shutdown and then ran > elasticsearch.bat again) and thus didn't reboot the VM or anything so > dramatic. All of the ES node files remained in place and the node > reconnected with the cluster with no issue. My rdp session remained. I > suspect if this were a hardware issue a) we would have seen this long ago > and b) it would have persisted after I restarted ES. > > Related, we actually have two clusters of the same size and same data that > have exhibited the same behavior. The cluster in which I restarted three > ES nodes remains responsive. The other cluster in which I have not (yet) > restarted nodes remains with the highly variable response time (200-40000ms > with 34415ms being a recent one). > > Thanks for replying. > > Craig. > > On Monday, September 15, 2014 2:58:22 PM UTC-7, Jörg Prante wrote: > >> You said you restarted a node, and since then, the effect has gone, is >> that true? Such high spikes like 40sec response might indicate problems in >> the hardware (disk failure, network latency or timeout, DNS), is this >> possible? >> >> Jörg >> >> >> -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to elasticsearch+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/9d74b9a8-cdcc-474f-9a34-9e2fa8240c74%40googlegroups.com > <https://groups.google.com/d/msgid/elasticsearch/9d74b9a8-cdcc-474f-9a34-9e2fa8240c74%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAKdsXoEjd2um%2BfXC3LMk-6P0ZZqsF83PM1%3Dtz4JLJyeC08YPqQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
