Aha! See, Kuli, I wasn't making it up! ;) Otis ---- Performance Monitoring for Solr / ElasticSearch / HBase - http://sematext.com/spm
>________________________________ > From: Robert Stewart <bstewart...@gmail.com> >To: solr-user@lucene.apache.org >Sent: Monday, May 14, 2012 11:23 AM >Subject: Re: Solr Shards multi core slower then single big core > >We used to have one large index - then moved to 10 shards (7 million docs >each) - parallel search across all shards, and we get better performance that >way. We use a 40 core box with 128GB ram. We do a lot of faceting so maybe >that is why since facets can be built in parallel on different threads/cores. >We also have indexes on fast local disks (6 15K RPM disks using raid stripes). > > >On May 14, 2012, at 10:42 AM, Michael Della Bitta wrote: > >> Hi, all, >> >> I've been running into murmurs about this idea elsewhere: >> >> http://stackoverflow.com/questions/8698762/run-multiple-big-solr-shard-instances-on-one-physical-machine >> >> http://java.dzone.com/articles/optimizing-solr-or-how-7x-your?mz=33057-solr_lucene >> >> Michael >> >> On Mon, May 14, 2012 at 10:29 AM, Otis Gospodnetic >> <otis_gospodne...@yahoo.com> wrote: >>> Hi Kuli, >>> >>> As long as there are enough CPUs with spare cycles and disk IO is not a >>> bottleneck, this works faster. This was 12+ months ago. >>> >>> Otis >>> ---- >>> Performance Monitoring for Solr / ElasticSearch / HBase - >>> http://sematext.com/spm >>> >>> >>> >>>> ________________________________ >>>> From: Michael Kuhlmann <k...@solarier.de> >>>> To: solr-user@lucene.apache.org >>>> Sent: Monday, May 14, 2012 10:21 AM >>>> Subject: Re: Solr Shards multi core slower then single big core >>>> >>>> Am 14.05.2012 16:18, schrieb Otis Gospodnetic: >>>>> Hi Kuli, >>>>> >>>>> In a client engagement, I did see this (N shards on 1 beefy box with lots >>>>> of RAM and CPU cores) be faster than 1 big index. >>>>> >>>> >>>> I want to believe you, but I also want to understand. Can you explain >>>> why? And did this only happen for single requests, or even under heavy >>>> load? >>>> >>>> Greetings, >>>> Kuli >>>> >>>> >>>> > > > >
