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From GitBox <...@apache.org>
Subject [GitHub] merlimat commented on a change in pull request #3650: Use less aggressive JVM memory settings in default config file
Date Fri, 22 Feb 2019 02:23:20 GMT
merlimat commented on a change in pull request #3650: Use less aggressive JVM memory settings
in default config file
URL: https://github.com/apache/pulsar/pull/3650#discussion_r259193056
 
 

 ##########
 File path: conf/bkenv.sh
 ##########
 @@ -33,10 +33,13 @@ BOOKIE_CONF=${BOOKIE_CONF:-"$BK_HOME/conf/bookkeeper.conf"}
 # BOOKIE_LOG_DIR=
 
 # Memory size options
-BOOKIE_MEM=" -Xms2g -Xmx2g -XX:MaxDirectMemorySize=2g"
+BOOKIE_MEM=" -Xmx2g -XX:MaxDirectMemorySize=2g -XX:+ExitOnOutOfMemoryError"
 
 # Garbage collection options
-BOOKIE_GC=" -XX:+UseG1GC -XX:MaxGCPauseMillis=10 -XX:+ParallelRefProcEnabled -XX:+UnlockExperimentalVMOptions
-XX:+AggressiveOpts -XX:+DoEscapeAnalysis -XX:ParallelGCThreads=32 -XX:ConcGCThreads=32 -XX:G1NewSizePercent=50
-XX:+DisableExplicitGC -XX:-ResizePLAB"
+BOOKIE_GC=" -XX:+UseG1GC"
 
 Review comment:
   I don't think this is a "breaking" change in the sense that it will not make anything that
was work to stop working. 
   
   Sure, it's a different setting and that should be documented, but the purpose of this change
is to change the "default" setting, because it's not ideal to be used as "default", rather
than allow the users to change the default (which is already possible). 
   

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