Thank you harsh. Can you please explain what you mean when u said "Just simple virtual memory used by the process" ? Doesn't virtual memory means swap?
On Wednesday, March 25, 2015, Harsh J <ha...@cloudera.com> wrote: > The suggestion (regarding swappiness) is not for disabling swap as much as > it is to 'not using swap (until really necessary)'. When you run a constant > memory-consuming service such as HBase you'd ideally want the RAM to serve > up as much as it can, which setting that swappiness value helps do (the OS > otherwise begins swapping way before its available physical RAM is nearing > full state). > > The vmem-pmem ratio is something entirely else. The vmem of a process does > not mean swap space usage, just simple virtual memory used by the . I'd > recommend disabling YARN's vmem checks on today's OSes (but keep pmem > checks on). You can read some more on this at > http://www.quora.com/Why-do-some-applications-use-significantly-more-virtual-memory-on-RHEL-6-compared-to-RHEL-5 > > On Thu, Mar 26, 2015 at 3:37 AM, Abdul I Mohammed <oracle.bl...@gmail.com > <javascript:_e(%7B%7D,'cvml','oracle.bl...@gmail.com');>> wrote: > >> Thanks Mith...any idea about Yarn.nodemanager.Vmem-pmem-ratio parameter... >> >> If data nodes does not require swap then what about the above parameter? >> What is that used for in yarn? > > > > > -- > Harsh J >
