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  1. Cassandra
  2. CASSANDRA-9483

Document incompatibilities with -XX:+PerfDisableSharedMem

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      Description

      We recently discovered that the Jolokia agent is incompatible with the -XX:+PerfDisableSharedMem JVM option. I assume that this may affect other monitoring tools as well.

      If we are going to leave this enabled by default, we should document the potential problems with it. A combination of a comment in cassandra-env.sh (and the Windows equivalent) and a comment in NEWS.txt should suffice, I think.

      If possible, it would be good to figure out what other tools are affected and also mention them.

      1. news_update.txt
        0.9 kB
        T Jake Luciani

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        tjake T Jake Luciani added a comment -

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        tjake T Jake Luciani added a comment - committed
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        jbellis Jonathan Ellis added a comment -

        working: instead of working., otherwise +1

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        jbellis Jonathan Ellis added a comment - working: instead of working. , otherwise +1
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        tjake T Jake Luciani added a comment -

        Added some words in NEWS.TXT along with other JVM related news.

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        tjake T Jake Luciani added a comment - Added some words in NEWS.TXT along with other JVM related news.
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        tjake T Jake Luciani added a comment -

        Also JMC and default list of local jconsole

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        tjake T Jake Luciani added a comment - Also JMC and default list of local jconsole
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        yukim Yuki Morishita added a comment -

        jps and jcmd -l do not list Cassandra process. Though we can use jstack and jcmd with pid obtained by command like ps.

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        yukim Yuki Morishita added a comment - jps and jcmd -l do not list Cassandra process. Though we can use jstack and jcmd with pid obtained by command like ps .

          People

          • Assignee:
            tjake T Jake Luciani
            Reporter:
            thobbs Tyler Hobbs
            Reviewer:
            Jonathan Ellis
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              Updated:
              Resolved:

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