Re: help needed improving lucene concurret search performance

2009-10-24 Thread Wilson Wu
-- Forwarded message -- From: Wilson Wu Date: 2009/10/24 Subject: Re: help needed improving lucene concurret search performance To: java-user@lucene.apache.org Hi,      Thanks a lot for your reply. There are 4 processors in my system.      I am not sure that 100 threads is going

Re: help needed improving lucene concurret search performance

2009-10-24 Thread Wilson Wu
Hi, Thanks a lot for your reply. There are 4 processors in my system. I am not sure that 100 threads is going to be 10 times slower than 10 threads .Because all the threads don't run serial but parallel. I think when there are 100 customers accessing my system,100 http connections will

Re: help needed improving lucene concurret search performance

2009-10-23 Thread Yonik Seeley
How many processors do you have on this system? If you are CPU bound, 100 threads is going to be 10 times slower (at a minimum) than 10 threads (unless you have more than 10 CPUs). -Yonik http://www.lucidimagination.com On Fri, Oct 23, 2009 at 2:18 AM, Wilson Wu wrote: > Dear Friend, >     I hav

help needed improving lucene concurret search performance

2009-10-22 Thread Wilson Wu
Dear Friend, I have encountered some performance problems recently in lucene search 2.9. I use a single IndexSearcher in the whole system, It seems perfect when there is less than 10 threads doing search concurrenty. Bu if there is more than 100 threads doing concurrent search,the average resp