I think they are cumulative but per task. Physical memory bytes (PHYSICAL_MEMORY_BYTES) The physical memory being used by a task in bytes, as reported by /proc/meminfo. Virtual memory bytes (VIRTUAL_MEMORY_BYTES) The virtual memory being used by a task in bytes, as reported by /proc/meminfo.
This is from the Definitive Guide book. Page 260. Regards, Shhab On Thu, Jul 11, 2013 at 12:47 PM, hadoop qi <[email protected]> wrote: > 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, >
