Re: How are 'PHYSICAL_MEMORY_BYTES' and 'VIRTUAL_MEMORY_BYTES' calculated?

2013-07-12 Thread hadoop qi
the Definitive Guide book. Page 260. Regards, Shhab On Thu, Jul 11, 2013 at 12:47 PM, hadoop qi hadoop@gmail.com 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

How are 'PHYSICAL_MEMORY_BYTES' and 'VIRTUAL_MEMORY_BYTES' calculated?

2013-07-11 Thread hadoop qi
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,