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https://issues.apache.org/jira/browse/APLO-351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13906941#comment-13906941
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Hiram Chirino commented on APLO-351:
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80,000 in 3G of memory is more clients than I would expect. I suspect your not
running any load on on those clients. Once you start running messaging load on
the broker, it's going to need even more memory.
'-Xms6G -Xms1G ' does not seem valid to me. Did you mean to do ' -Xmx6G
-Xms1G'? In any case if the apollo-broker-service fails to startup a broker,
try starting the broker in the foreground using 'apollo-broker run'. That way
is you can see if the JVM outputs any errors to the console screen.
> out of memory
> -------------
>
> Key: APLO-351
> URL: https://issues.apache.org/jira/browse/APLO-351
> Project: ActiveMQ Apollo
> Issue Type: Bug
> Components: apollo-broker
> Affects Versions: 1.6
> Reporter: oscar
> Attachments: 18AADBAA-5058-4344-AAC0-D1C51891C194.png,
> 37DF6BCA-9707-4583-943D-C0D0B6408FDD.png,
> 8ADF01D2-47BB-4666-8D40-145BBC55B593.png
>
>
> use apollo + mqtt to publish message,but when have 100,000 clients, the
> apollo.log prints:
> 2014-02-18 19:31:28,475 | WARN | java.lang.OutOfMemoryError: Java heap space
> | 14444b747fc
> 2014-02-18 19:31:28,475 | WARN | java.lang.OutOfMemoryError: Java heap space
> | 14444b747fd
> 2014-02-18 19:31:35,422 | WARN | java.lang.OutOfMemoryError: Java heap space
> | 14444b747fe
> 2014-02-18 19:31:41,703 | WARN | java.lang.OutOfMemoryError: GC overhead
> limit exceeded | 14444b747ff
> 2014-02-18 19:31:54,934 | WARN | java.lang.OutOfMemoryError: GC overhead
> limit exceeded | 14444b74800
> 2014-02-18 19:32:07,494 | WARN | java.lang.OutOfMemoryError: Java heap space
> | 14444b74803
> 2014-02-18 19:32:01,211 | WARN | java.lang.OutOfMemoryError: Java heap space
> | 14444b74802
> 2014-02-18 19:32:01,211 | WARN | java.lang.OutOfMemoryError: Java heap space
> | 14444b74801
> use export JVM_FLAGS="-server -Xmx3G -Xms1G" in apollo-service
> my system is linux (CentOS 6.5),32G memory,8 cpus
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