Messages in this thread | | | From | "Chen, Kenneth W" <> | Subject | RE: RSS accounting (was: Re: 2.6.19-rc1-mm1) | Date | Wed, 11 Oct 2006 10:15:39 -0700 |
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Arjan van de Ven wrote on Wednesday, October 11, 2006 6:55 AM > > Well I tried to defined it in terms of what you can use it for. > > > > I would define the resident set size as the total number of bytes > > of physical RAM that a process (or set of processes) is using, > > irrespective of the rest of the system. > > > > So I think the counting should be primarily about what is mapped into > > the page tables. But other things can be added as is appropriate or > > easy. > > > > The practical effect should be that an application that needs more > > pages than it's specified RSS to avoid thrashing should thrash but > > it shouldn't take the rest of the system with it. > > > so by your definition, hugepages are part of RSS. > > Ken: what is your definition of RSS ?
I'm more inclined to define RSS as "how much ram does my application cause to be used". To monitor process's working set size, We already have /proc/<pid>/smaps. Whether we can use working set size in an intelligent way in mm is an interesting question. Though, so far such accounting is not utilized at all.
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