Hi Bernd, On Tue, Sep 18, 2012 at 3:09 AM, Bernd Fehling <bernd.fehl...@uni-bielefeld.de> wrote: > Hi Otis, > > not really a problem because I have plenty of memory ;-) > -Xmx25g -Xms25g -Xmn6g
Good. > I'm just interested into this. > Can you report similar jumps within JVM with your monitoring at sematext? Yes. More importantly, SPM will show you a bunch of other Solr and system metrics, so you can correlate them to your JVM heap jumps. For example, you may see the number of index file change at that time. Or higher request rate. Or cache size growth. Or ... > Actually I would assume to see jumps of 0.5GB or even 1GB, but 5GB? > And what is the cause, a cache? Might be. Please see above. Of course, you could also try running a profiler and analyzing the heap dump.... though you may need a lot of RAM on your workstation for doing that. :) > And is there another option in JVM to give memory jumps a size? Doesn't -gc:verbose show heap jumps? Otis Search Analytics - http://sematext.com/search-analytics/index.html Performance Monitoring - http://sematext.com/spm/index.html > Am 18.09.2012 08:58, schrieb Otis Gospodnetic: >> Hi Bernd, >> >> But is this really (causing) a problem? What -Xmx are you using? >> >> Otis >> Search Analytics - http://sematext.com/search-analytics/index.html >> Performance Monitoring - http://sematext.com/spm/index.html >> >> >> On Tue, Sep 18, 2012 at 2:50 AM, Bernd Fehling >> <bernd.fehl...@uni-bielefeld.de> wrote: >>> Hi list, >>> >>> while monitoring my systems I see a jump in memory consumption in JVM >>> after 2 to 5 days of running of about 5GB. >>> >>> After starting the system (search node only, no replication during search) >>> SOLR uses between 6.5GB to 10.3GB of JVM when idle. >>> If the search node is online and serves requests it uses between 7GB to >>> 11.3GB. >>> But after 2 to 5 days of running I see a jump in JVM with memory consumption >>> of about 5GB. The JVM uses then between 13GB and 18GB. >>> >>> Anyone else seen this also? >>> >>> I analyzed the logs but no exceptions, no special queries, no long QTime. >>> Also the GC log has nothing unusual at the first sight. >>> >>> Why is the JVM doing a jump of 5GB, which part of SOLR can cause such a >>> jump in JVM? >>> >>> I would accept a slowly growing of memory consumption, but a jump? of about >>> 5GB? >>> >>> Regards >>> Bernd
