Sorry, I did search for an answer, but didn't find an applicable one.
I'm currently stuck on 1.4.1 (running in Tomcat 6 on 64bit Linux) for
the time being...
When I see stats like this:
name: documentCache
class: org.apache.solr.search.LRUCache
version: 1.0
description: LRU Cache(maxSize=512, initialSize=512)
lookups : 0
hits : 0
hitratio : 0.00
inserts : 0
evictions : 0
size : 0
warmupTime : 0
cumulative_lookups : 8158
cumulative_hits : 685
cumulative_hitratio : 0.08
cumulative_inserts : 7473
cumulative_evictions : 3023
I don't understand "lookups" vs. "cumulative_lookups", etc. I _do_
understand that a hit-ratio of 0.08 isn't a very good one.
Something I definitely find strange is that I've allocated 4G of RAM to
the java heap, but solr consistently remains around 1.7G. I'm trying to
give it all the RAM I can spare (I could go higher, but it's not even
using what I'm giving it) to make it faster.
The index takes-up roughly 25GB on disk, and indexing is very fast
(well, nothing we're complaining about anyway). We're trying to figure
out why queries against the default, document content are slow (15-30
seconds for only a few mm total documents). Mergefactor=3, if that helps.
So if anyone could point me to someplace that defines what these stats
mean, and if anyone has any immediate tips/tricks/recommendations as to
increasing query performance (and whether this documentCache is a good
candidate to be increased substantially), I would very much appreciate it.
-AJ
