SOLR high CPU utilization in amazon linux -

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i installed solr-3.6 in local windows box , worked fine.

i installed solr-4.0 in amazon ec2 linux large instance , cpu usage shot upto 100%. maintained @ 80-90% average cpu power.

i thought because of 4.0, installed 3.6 in ec2 again. again cpu usage 80-90% average.

with both versions, solr works in ec2. dont know why cpu usage high.

in local box java 1.7 installed , in ec2 1.6.0_24. have mapped solr dir ebs volume.

/dev/mapper/vg1-solr   8361916   1935928   6342128  24% /home/ec2-user/solr/solr/example/solr

is there known issue ?

we faced issue yesterday - problem because of leap second on june 30 2012. linux kernel component manages sleep times isn't updated correct time , causes extremely high cpu usage java processes. related question on serverfault , fix derived (for debian):

(issue these commands command line)

export lang="en_en" date -s "`date`"  /etc/init.d/ntp stop ntpdate pool.ntp.org /etc/init.d/ntp start

for red hat derived systems, believe replace ntp ntpd.


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