Garbage collection would be my first guess too. Here's an excellent article on GC:
http://searchhub.org/2011/03/27/garbage-collection-bootcamp-1-0/ Best Erick On Mon, Apr 29, 2013 at 5:56 AM, Christian von Wendt-Jensen <christian.vonwendt-jen...@infopaq.com> wrote: > I'm experiencing the same issue in my setup. > > If you do not see any logging for several seconds, then it _could_ be due to > garbage collection. If you experience heavy traffic and have very large > caches, then the JVM might be forced to do a full garbage collection from > time to time, halting all processes. In that case your caches might be too > big, and you should experiment with decreasing their size. You should be able > to profile the JVM to monitor garbage collection. > > > > Med venlig hilsen / Best Regards > > Christian von Wendt-Jensen > IT Team Lead, Customer Solutions > > Infopaq International A/S > Kgs. Nytorv 22 > DK-1050 København K > > Phone +45 36 99 00 00 > Mobile +45 31 17 10 07 > Email > christian.sonne.jen...@infopaq.com<mailto:christian.sonne.jen...@infopaq.com> > Web www.infopaq.com<http://www.infopaq.com/> > > > > > > > > > DISCLAIMER: > This e-mail and accompanying documents contain privileged confidential > information. The information is intended only for the recipient(s) named. Any > unauthorised disclosure, copying, distribution, exploitation or the taking of > any action in reliance of the content of this e-mail is strictly prohibited. > If you have received this e-mail in error we would be obliged if you would > delete the e-mail and attachments and notify the dispatcher by return e-mail > or at +45 36 99 00 00 > P Please consider the environment before printing this mail note. > > From: mizayah <miza...@gmail.com<mailto:miza...@gmail.com>> > Reply-To: "solr-user@lucene.apache.org<mailto:solr-user@lucene.apache.org>" > <solr-user@lucene.apache.org<mailto:solr-user@lucene.apache.org>> > Date: Mon, 29 Apr 2013 14:33:35 +0200 > To: "solr-user@lucene.apache.org<mailto:solr-user@lucene.apache.org>" > <solr-user@lucene.apache.org<mailto:solr-user@lucene.apache.org>> > Subject: solr 3.6 hang for few seconds, need help > > Hi, > > Im running solr 3.6 on tomcat, under some traffic about 20r/s > I got 6 different cores on it. > > > I was testing one by quering every 1 second with simple request and time > param. > > > INFO: [core1] webapp=/solr3.4-tomcat path=/select params= ... 1:55:05 ... > Apr 29, 2013 1:55:06 PM org.apache.solr.core.SolrDeletionPolicy onInit > INFO: SolrDeletionPolicy.onInit: commits:num=2 > > commit{dir=/vol/solr3.4-tomcat/core2/index,segFN=segments_4ecd4,version=1331656373519,generation=7387672,filenames=[_1yxp2.fdx, > _4herl.nrm, _2inup_17f5.del, _1yxp2.fd > > commit{dir=/vol/solr3.4-tomcat/core2/index,segFN=segments_4ecdh,version=1331656373568,generation=7387685,filenames=[_1yxp2.fdx, > _4herl.nrm, _2inup_17f5.del, _1yxp2.fd > Apr 29, 2013 1:55:06 PM org.apache.solr.core.SolrDeletionPolicy > updateCommits > INFO: newest commit = 1331656373568 > Apr 29, 2013 1:55:06 PM org.apache.solr.update.DirectUpdateHandler2 commit > INFO: start > commit(optimize=false,waitFlush=false,waitSearcher=true,expungeDeletes=false) > Apr 29, 2013 1:55:06 PM org.apache.solr.core.SolrCore execute > INFO: [core1] webapp=/solr3.4-tomcat path=/select params=... 1:55:06 ... > Apr 29, 2013 1:55:14 PM org.apache.solr.core.SolrCore execute > INFO: [core1] webapp=/solr3.4-tomcat path=/select params=... 1:55:07 ... > Apr 29, 2013 1:55:15 PM org.apache.solr.core.SolrCore execute > INFO: [core1] webapp=/solr3.4-tomcat path=/select params=... 1:55:15 ... > > > query from 1:55:15 was executed at 1:15:14. > Between 1:55:06 - 1:55:17 there is nothing in solr and tomcat logs. > > > What could hapen here? I'm getting that hang every some time. > Does commiting, or something could stop me from searching? > > > > > > > -- > View this message in context: > http://lucene.472066.n3.nabble.com/solr-3-6-hang-for-few-seconds-need-help-tp4059760.html > Sent from the Solr - User mailing list archive at Nabble.com. >
