Hello Rob, Well, you didn't say how many concurrent requests are happening there. It looks like just 1. Can it be?
Otis ---- Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch Lucene ecosystem search :: http://search-lucene.com/ >________________________________ >From: Rob Brown <r...@intelcompute.com> >To: solr-user@lucene.apache.org >Sent: Saturday, October 15, 2011 7:32 PM >Subject: Multi CPU Cores > >Hi, > >I'm running Solr on a machine with 16 CPU cores, yet watching "top" >shows that java is only apparently using 1 and maxing it out. > >Is there anything that can be done to take advantage of more CPU cores? > >Solr 3.4 under Tomcat > >[root@solr01 ~]# java -version >java version "1.6.0_20" >OpenJDK Runtime Environment (IcedTea6 1.9.8) >(rhel-1.22.1.9.8.el5_6-x86_64) >OpenJDK 64-Bit Server VM (build 19.0-b09, mixed mode) > > >top - 14:36:18 up 22 days, 21:54, 4 users, load average: 1.89, 1.24, >1.08 >Tasks: 317 total, 1 running, 315 sleeping, 0 stopped, 1 zombie >Cpu0 : 0.0%us, 0.0%sy, 0.0%ni, 99.6%id, 0.4%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu1 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu2 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu3 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu4 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu5 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu6 : 99.6%us, 0.4%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu7 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu8 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu9 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu10 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu11 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu12 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu13 : 0.7%us, 0.0%sy, 0.0%ni, 99.3%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu14 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Cpu15 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, >0.0%st >Mem: 132088928k total, 23760584k used, 108328344k free, 318228k >buffers >Swap: 25920868k total, 0k used, 25920868k free, 18371128k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ >COMMAND > > >4466 tomcat 20 0 31.2g 4.0g 171m S 101.0 3.2 2909:38 >java > > >6495 root 15 0 42416 3892 1740 S 0.4 0.0 9:34.71 >openvpn > > >11456 root 16 0 12892 1312 836 R 0.4 0.0 0:00.08 >top > > > 1 root 15 0 10368 632 536 S 0.0 0.0 0:04.69 >init > > > > > >
