On 11/13/10 11:59 AM, Reverend Chip wrote:
Swapping could conceivably be a
factor; the JVM is 32G out of 72G, but the machine is 2.5G into swap
anyway. I'm going to disable swap and see if the gossip issues resolve.
Are you using JNA/memlock to prevent the JVM's heap from being swapped?
There's a log message about it at startup time if it fails, which looks
like :
"
logger_.warn("Unable to lock JVM memory (ENOMEM)."
or
logger.warn("Unknown mlockall error " + errno(e));
"
Trunk also logs if it is successful :
"
logger.info("JNA mlockall successful");
"
See here for background :
https://issues.apache.org/jira/browse/CASSANDRA-1214
=Rob
