In "top", press the '1' key. This will give a list of the CPUs and how much load is on each. The display is otherwise a little weird for multi-cpu machines. But don't be surprised when Solr is I/O bound. The biggest fanciest RAID is often a better investment than CPUs. On one project we bought low-end rack servers come with 6-8 disk bays, filling them with 10k/15k RPM disks.
On Wed, Sep 23, 2009 at 2:47 PM, Dan A. Dickey <dan.dic...@savvis.net> wrote: > On Friday 11 September 2009 11:06:20 am Dan A. Dickey wrote: > ... >> Our JBoss expert and I will be looking into why this might be occurring. >> Does anyone know of any JBoss related slowness with Solr? >> And does anyone have any other sort of suggestions to speed indexing >> performance? Thanks for your help all! I'll keep you up to date with >> further progress. > > Ok, further progress... just to keep any interested parties up to date > and for the record... > > I'm finding that using the "example" jetty setup (will be switching very > very soon to a "real" jetty installation) is about the fastest. Using > several processes to send posts to Solr helps a lot, and we're seeing > about 80 posts a second this way. > > We also stripped down JBoss to the bare bones and the Solr in it > is running nearly as fast - about 50 posts a second. It was our previous > JBoss configuration that was making it appear "slow" for some reason. > > We will be running more tests and spreading out the "pre-index" workload > across more machines and more processes. In our case we were seeing > the bottleneck being one machine running 18 processes. > The 2 quad core xeon system is experiencing about a 25% cpu load. > And I'm not certain, but I think this may be actually 25% of one of the 8 > cores. > So, there's *lots* of room for Solr to be doing more work there. > -Dan > > -- > Dan A. Dickey | Senior Software Engineer > > Savvis > 10900 Hampshire Ave. S., Bloomington, MN 55438 > Office: 952.852.4803 | Fax: 952.852.4951 > E-mail: dan.dic...@savvis.net > -- Lance Norskog goks...@gmail.com
