Yes, versions of Lucene have changed, but should only be faster. A simple way to see what's happening is to get the thread dump (e.g. through Solr admin pages) to see what the JVM is doing when things slow down. Do a few dumps and see. Perhaps the avg indexing rate is slower due to larger index segments?
Otis -- Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch ----- Original Message ---- > From: Marcus Herou <marcus.he...@tailsweep.com> > To: solr-user@lucene.apache.org > Sent: Saturday, April 25, 2009 7:00:57 AM > Subject: Solr-1.4 indexing slower ? > > Hi. > We upgraded to solr-trunk (1.4-dev) for a few weeks ago and I've notices > that the performance really went down. Not sure if I can blame solr 100% > though so take these comments for what they might be (bullshit) > > However: > For a few months ago I know we had indexing speed of about 100 docs/sec per > shard = 800-1000 docs/sec on all shards but now we are lucky if we get over > 10 docs/sec per shard... > > This is merely an observation with very little scientific research behind to > support it since I did not profile the app before launching 1.4 to see how > good 1.3 behaved at that exact time... I launched 1.4 due to the fact that > the rumours said that date faceting was faster in solr-1.4 which I believe > it is. That's why I missed to profile indexing speed. > > Did not Lucene as well change version between the two ? > > Wondering if anyone else experience the same issues. > > //Marcus > > -- > Marcus Herou CTO and co-founder Tailsweep AB > +46702561312 > marcus.he...@tailsweep.com > http://www.tailsweep.com/ > http://blogg.tailsweep.com/
