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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-1055) Better vm stats on startup
Date Thu, 11 Dec 2008 18:38:44 GMT
Better vm stats on startup

                 Key: HBASE-1055
                 URL: https://issues.apache.org/jira/browse/HBASE-1055
             Project: Hadoop HBase
          Issue Type: Improvement
            Reporter: stack

Use to do this in the logs:

java version "1.6.0_10-beta"
Java(TM) SE Runtime Environment (build 1.6.0_10-beta-b25)
Java HotSpot(TM) Server VM (build 11.0-b12, mixed mode)
ulimit -n 16384

Change it to... 

ulimit -n 256
2008-12-11 10:36:19,209 INFO org.apache.hadoop.hbase.master.HMaster: vmName=Java HotSpot(TM)
64-Bit Server VM, vmVendor=Sun Microsystems Inc., vmVersion=1.6.0_03-p3-landonf_19_aug_2008_15_52-b00
2008-12-11 10:36:19,209 INFO org.apache.hadoop.hbase.master.HMaster: vmInputArguments=[-Xmx1000m,
-XX:+HeapDumpOnOutOfMemoryError, -Dhbase.log.dir=/Users/stack/Documents/checkouts/hbase/trunk/bin/../logs,
-Dhbase.log.file=hbase-stack-master-durruti.desk.hq.powerset.com.log, -Dhbase.home.dir=/Users/stack/Documents/checkouts/hbase/trunk/bin/..,
-Dhbase.id.str=stack, -Dhbase.root.logger=INFO,DRFA, -Djava.library.path=/Users/stack/Documents/checkouts/hbase/trunk/bin/../lib/native/Darwin-amd64-64]

Adds args and more stats on vm (whether 32bit or 64bit, heap size, etc).

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