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https://issues.apache.org/jira/browse/CASSANDRA-9607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14591977#comment-14591977
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Robbie Strickland edited comment on CASSANDRA-9607 at 6/18/15 3:32 PM:
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Yes it does. It seems from our observation to be related to 1) our heavy use
of DTCS combined with
[CASSANDRA-9549|https://issues.apache.org/jira/browse/CASSANDRA-9549] and 2)
severe GC pauses (such that it was GCing constantly).
We were able to make things stable by moving to G1 with the following
modifications:
{code}
#JVM_OPTS="$JVM_OPTS -Xmn${HEAP_NEWSIZE}"
JVM_OPTS="$JVM_OPTS -XX:+UseG1GC"
JVM_OPTS="$JVM_OPTS -XX:MaxGCPauseMillis=1000"
JVM_OPTS="$JVM_OPTS -XX:+UseTLAB -XX:+ResizeTLAB"
JVM_OPTS="$JVM_OPTS -XX:-UseBiasedLocking"
{code}
This is still a work in progress, but it has allowed us to reach a stable state.
was (Author: rstrickland):
Yes it does. It seems from our observation to be related to 1) our heavy use
of DTCS combined with
[CASSANDRA-9549|https://issues.apache.org/jira/browse/CASSANDRA-9549] and 2)
severe GC pauses (such that it was GCing constantly).
We were able to make things stable by moving to G1 with the following
modifications:
{{code}}
#JVM_OPTS="$JVM_OPTS -Xmn${HEAP_NEWSIZE}"
JVM_OPTS="$JVM_OPTS -XX:+UseG1GC"
JVM_OPTS="$JVM_OPTS -XX:MaxGCPauseMillis=1000"
JVM_OPTS="$JVM_OPTS -XX:+UseTLAB -XX:+ResizeTLAB"
JVM_OPTS="$JVM_OPTS -XX:-UseBiasedLocking"
{{code}}
This is still a work in progress, but it has allowed us to reach a stable state.
> Get high load after upgrading from 2.1.3 to cassandra 2.1.6
> -----------------------------------------------------------
>
> Key: CASSANDRA-9607
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9607
> Project: Cassandra
> Issue Type: Bug
> Environment: OS:
> CentOS 6 * 4
> Ubuntu 14.04 * 2
> JDK: Oracle JDK 7
> Reporter: Study Hsueh
> Priority: Critical
> Attachments: load.png
>
>
> After upgrading cassandra version from 2.1.3 to 2.1.6, the average load of my
> cassandra cluster grows from 0.x~1.x to 3.x~6.x.
> What kind of additional information should I provide for this problem?
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