how to reduce solr memory usage?

Question

I use solr in my application, there is just hundreds of documents. the memory usage is about 80M, how to reduce it?

Answer 1

80M is not much, in fact it's pretty much the mininum, you won't go much lower than that.

Some factors that affect memory usage:

• Input document size
• Multi-threaded document updates
• Cache size
• Facet queries
• Sorting

References:

• http://wiki.apache.org/solr/SolrPerformanceFactors#Factors_affecting_memory_usage
• http://www.nabble.com/Debugging-Solr-memory-usage-heap-problems-td8832794.html
• http://osdir.com/ml/solr-user.lucene.apache.org/2009-02/msg00050.html
• http://mail-archives.apache.org/mod_mbox/lucene-solr-user/200905.mbox/%[email protected]%3E