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From "Peter Schuller (JIRA)" <>
Subject [jira] Commented: (CASSANDRA-1968) Increase JVM young generation size
Date Tue, 11 Jan 2011 23:08:51 GMT


Peter Schuller commented on CASSANDRA-1968:

FWIW, on JDK 1.7, using MaxGCPauseMillis set to a reasonable value may be a good idea, allowing
the VM to choose a young-gen size as large as possible to accomodate the pause time goal (while
originally introduced for G1 it's also usable with CMS, though I haven't tried how well it
works with CMS). Unfortunately this is not available before 1.7.

> Increase JVM young generation size
> ----------------------------------
>                 Key: CASSANDRA-1968
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>    Affects Versions: 0.7.0
>            Reporter: Brandon Williams
>            Assignee: Brandon Williams
>             Fix For: 0.7.1
>         Attachments: 1968.txt
> Increasing the young generation size has a profound effect on performance and cpu utilization.
 We should set it explicitly.

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