Please answer with the size of your index (post-optimize) and how long an optimize takes. I'll collect the data and see if I can draw a line through it.
190 MB, 55 seconds $ du -sk /apps/wss/solr_home/data/index 191592 /apps/wss/solr_home/data/index $ grep commit /apps/wss/tomcat/logs/stdout.log Feb 28, 2008 11:55:11 AM org.apache.solr.update.DirectUpdateHandler2 commit INFO: start commit(optimize=true,waitFlush=false,waitSearcher=true) Feb 28, 2008 11:56:06 AM org.apache.solr.update.DirectUpdateHandler2 commit INFO: end_commit_flush $ uname -a Linux spiderman4 2.6.9-22.EL #1 SMP Mon Sep 19 17:52:20 EDT 2005 ppc64 ppc64 ppc64 GNU/Linux wunder