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GSC falling out of and rejoining cluster

I found that our single GSC falls out and rejoins the GSM often. Any suggestions?

from the GSM log: Aug 22, 2008 11:58:32 AM INFO [org.jini.rio.monitor.provision]: Requesting allocation of [AsideMM.PU [1]] on [Grid Service Container grid1/172.25.25.166]

Aug 22, 2008 11:59:04 AM INFO [org.jini.rio.monitor.provision]: Allocated [AsideMM.PU [1]] on [Grid Servi ce Container grid1/172.25.25.166]

Aug 22, 2008 12:07:58 PM INFO [org.jini.rio.monitor]: GSC @ 172.25.25.166 removed, GSC count now [0]

Aug 22, 2008 12:11:15 PM INFO [org.jini.rio.monitor.feedback]: Registered new GSC @ 172.25.25.166 GSC cou nt [1]

Aug 22, 2008 12:33:59 PM INFO [org.jini.rio.monitor]: GSC @ 172.25.25.166 removed, GSC count now [0]

Aug 22, 2008 12:45:19 PM INFO [org.jini.rio.monitor.feedback]: Registered new GSC @ 172.25.25.166 GSC cou nt [1]

Aug 22, 2008 12:45:19 PM INFO [org.jini.rio.monitor.feedback]: Registered new GSC @ 172.25.25.166 GSC cou nt [2]

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asked 2008-08-22 14:52:44 -0500

larrychu gravatar image

updated 2013-08-08 09:52:00 -0500

jaissefsfex gravatar image
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Any chance you have long pauses as a result of a GC?
Have you tuned the GC activity to be shorter than 3 sec?

Long pause (more than 4 sec - controlled by com.gs.jini.config.maxLeaseDuration) with the JVM activity will signal the LUS and the GSM that the GSC service is not there.

See below example for a tuned JVM with 1 sec as max pause as a result of GC activity:
-Xmx2g -XX:UseConcMarkSweepGC -XX:CMSIncrementalMode -XX:CMSIncrementalPacing -XX:CMSIncrementalDutyCycleMin=10 -XX:CMSIncrementalDutyCycle=50 XX:ParallelGCThreads=8 -XX:UseParNewGC -Xmn5m -XX:MaxGCPauseMillis=1000 -XX:GCTimeRatio=4 -XX:+DisableExplicitGC "

Please note the above will impact the performance (mostly the UseConcMarkSweepGC).

Shay

answered 2008-08-22 15:48:10 -0500

shay hassidim gravatar image
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Asked: 2008-08-22 14:52:44 -0500

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Last updated: Aug 22 '08