Messages in this thread | | | Date | Wed, 29 Jul 2015 18:31:35 +0300 | From | Vladimir Davydov <> | Subject | Re: [PATCH -mm v9 0/8] idle memory tracking |
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On Wed, Jul 29, 2015 at 08:08:22AM -0700, Michel Lespinasse wrote: > On Wed, Jul 29, 2015 at 7:45 AM, Vladimir Davydov <vdavydov@parallels.com> > wrote: > > Page table scan approach has the inherent problem - it ignores unmapped > > page cache. If a workload does a lot of read/write or map-access-unmap > > operations, we won't be able to even roughly estimate its wss. > > You can catch that in mark_page_accessed on those paths, though.
Actually, the problem here is how to find an unmapped page cache page *to mark it idle*, not to mark it accessed.
Thanks, Vladimir
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