Could this be caused by Lucene merges at some point? I guess also that when a segment is commited, it could take some time to compute cache for new segments?
Are you using warmers? -- David ;-) Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs > Le 11 avr. 2014 à 15:24, Nikolas Everett <[email protected]> a écrit : > > When I repeat the same search over and over again I get somewhat wild > fluctuations in run time: 4ms, 4ms, 87ms, 17ms, 157ms, 4ms, 4ms, 4ms > > Any ideas what might cause this? This only seems to happen on my production > cluster so I'm not likely to be able to make full reproduction steps. I > causing it with a simple match query without any filters or anything. > > Normally I trace performance stuff by causing lots of traffic and looking at > hot_threads but that these fluctuations don't feel like they'd be easy to > catch that way. > > I have 16 nodes on real hardware with somewhat slow disks and 30GB heaps with > 96GB total ram. We write to the indexes constantly but slowly. Maybe 2-3 > updates (not new docs, changes to old docs) per second per shard. > > Any ideas would be great, > > Thanks > > Nik > -- > 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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/CAPmjWd2hR-CDOsOy-o1Opqc8V6GWJ5Z_qRxAOsi2yrc_5RGBmQ%40mail.gmail.com. > 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/D9F22255-CBFE-4DE5-BBF2-BEF7F76624FC%40pilato.fr. For more options, visit https://groups.google.com/d/optout.
