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MapReduce >> mail # user >> How are 'PHYSICAL_MEMORY_BYTES' and 'VIRTUAL_MEMORY_BYTES' calculated?


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How are 'PHYSICAL_MEMORY_BYTES' and 'VIRTUAL_MEMORY_BYTES' calculated?
Hello,

I am wondering how memory counters  'PHYSICAL_MEMORY_BYTES'  and
'VIRTUAL_MEMORY_BYTES'  are calculated? They are peaks of memory usage or
cumulative usage?

Thanks for help,
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB