I don't think so as sorting in on integer fields --------- dmitri
Paul Smith-2 wrote: > > are you using Locale-sensitive sorting at all? > > https://issues.apache.org/jira/browse/LUCENE-806 > > Just wondering if you're seeing the same problem we are having. > > cheers, > > Paul Smith > > On 19/02/2007, at 8:52 AM, dmitri wrote: > >> >> We have search (no update) web app on 2 dual core CPU machine (2x >> Dual Core >> AMD Opteron(tm) Processor 280) with 8G of RAM. Lucene 2.0 is used. >> My index is optimized and non compound, 9G holding 6.5 M documents. >> Search includes term queries, range filters and sorts. >> >> When I use single IndexSearcher and search with multiple threads >> CPU are >> partially idle. >> >> To have 100% CPU utilization I have to create several IndexSearchers. >> >> With org.apache.lucene.store.MMapDirectory throughput is better but >> I still >> have to create multiple IndexSearcher instances to have 100% CPU >> utilization. >> >> With multiple IndexSearchers search times are better under >> multithreaded >> load. >> Following is average search times (in ms) for different number of >> parallel >> threads and IndexSearchers: >> concurrent 1 searcher 5 searchers 10 searchers >> threads >> 1 180 177 167 >> 2 201 184 174 >> 4 241 197 188 >> 5 339 236 220 >> 10 663 454 420 >> 20 1172 917 880 >> 50 2599 2143 1912 >> 100 4887 4056 3775 >> Maximum search times for smaller number of searchers differ in 2-3 >> times. >> >> Search is CPU bound (no IO wait is observed). >> Is there any way to better utilize the server other than create >> several >> IndexSearchers? >> I need to squeeze as much performance as possible out of the >> machine as we >> have strict performance requirements. >> -- >> View this message in context: http://www.nabble.com/IndexSearcher- >> on-multi-core-CPU-machine-tf3249889.html#a9034207 >> Sent from the Lucene - Java Users mailing list archive at Nabble.com. >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> > > > > > > -- View this message in context: http://www.nabble.com/IndexSearcher-on-multi-core-CPU-machine-tf3249889.html#a9044054 Sent from the Lucene - Java Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
