They are the running metrics. While the task is running, they will tell you how much pmem/vmem it is using at that point of time. Obviously at the end of job, it will be the last snapshot.
Thanks, +Vinod On Jul 12, 2013, at 6:47 AM, Shahab Yunus wrote: > 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 <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? > > Thanks for help, >
