On 3/25/2015 8:42 AM, Nitin Solanki wrote: > Server configuration: > 8 CPUs. > 32 GB RAM > O.S. - Linux
<snip> > are running. Java heap set to 4096 MB in Solr. While indexing, <snip> > *Currently*, I have 1 shard with 2 replicas using SOLR CLOUD. > Data Size: > 102G solr/node1/solr/wikingram_shard1_replica2 > 102G solr/node2/solr/wikingram_shard1_replica1 If both of those are on the same machine, I'm guessing that you're running two Solr instances on that machine, so there's 8GB of RAM used for Java. That means you have about 24 GB of RAM left for caching ... and 200GB of index data to cache. 24GB is not enough to cache 200GB of index. If there is only one Solr instance (leaving 28GB for caching) with 102GB of data on the machine, it still might not be enough. See that "SolrPerformanceProblems" wiki page I linked in my earlier email. For 102GB of data per server, I recommend at least 64GB of total RAM, preferably 128GB. For 204GB of data per server, I recommend at least 128GB of total RAM, preferably 256GB. Thanks, Shawn
