Our solr index used to perform OK on our beta production box (anywhere between 
0-3 seconds to complete any query), but today I noticed that the performance is 
very bad (queries take between 12 – 15 seconds).

I haven't updated the solr index configuration (schema.xml/solrconfig.xml) 
lately.  All that's changed is the data — every month, I rebuild the solr index 
from scratch and deploy it to the box.  We will eventually go to incremental 
builds. But for now, all indexes are built from scratch.

Here are the stats:
Solr index size 183G
Documents in index 14364201
We just have single solr box
It has 100G memory
500G Harddrive
16 cpus

I don't know when the performance degradation started.  Today was the first 
time I noticed it, but I haven't used this box for a while.

I want to pinpoint where the performance issue is coming from.  Could I have 
some suggestions/help on how to benchmark/debug solr performance issues.

Thank you,
Rebecca Tang
Applications Developer, UCSF CKM
Industry Documents Digital Libraries
E: rebecca.t...@ucsf.edu

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