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Groups > linux.kernel > #1392316
| From | Dave Hansen <dave.hansen@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: mm: pages are not freed from lru_add_pvecs after process termination |
| Date | 2016-05-02 17:50 +0200 |
| Message-ID | <ruogF-66V-1@gated-at.bofh.it> (permalink) |
| References | <rsB8m-4NH-5@gated-at.bofh.it> <rsBi2-4Sv-9@gated-at.bofh.it> <runkD-58W-33@gated-at.bofh.it> <runDY-5IL-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 05/02/2016 08:01 AM, Kirill A. Shutemov wrote: > On Mon, May 02, 2016 at 04:39:35PM +0200, Vlastimil Babka wrote: >> On 04/27/2016 07:11 PM, Dave Hansen wrote: >>> 6. Perhaps don't use the LRU pagevecs for large pages. It limits the >>> severity of the problem. >> >> I think that makes sense. Being large already amortizes the cost per base >> page much more than pagevecs do (512 vs ~22 pages?). > > We try to do this already, don't we? Any spefic case where we have THPs on > pagevecs? Lukas was hitting this on a RHEL 7 era kernel. In his kernel at least, I'm pretty sure THP's were ending up on pagevecs. Are you saying you don't think we're doing that any more?
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Re: mm: pages are not freed from lru_add_pvecs after process termination Vlastimil Babka <vbabka@suse.cz> - 2016-05-02 16:50 +0200
Re: mm: pages are not freed from lru_add_pvecs after process termination "Kirill A. Shutemov" <kirill@shutemov.name> - 2016-05-02 17:10 +0200
Re: mm: pages are not freed from lru_add_pvecs after process termination Vlastimil Babka <vbabka@suse.cz> - 2016-05-02 17:20 +0200
Re: mm: pages are not freed from lru_add_pvecs after process termination Dave Hansen <dave.hansen@intel.com> - 2016-05-02 17:50 +0200
Re: mm: pages are not freed from lru_add_pvecs after process termination "Kirill A. Shutemov" <kirill@shutemov.name> - 2016-05-02 18:10 +0200
Re: mm: pages are not freed from lru_add_pvecs after process termination Michal Hocko <mhocko@kernel.org> - 2016-05-03 09:40 +0200
Re: mm: pages are not freed from lru_add_pvecs after process termination "Kirill A. Shutemov" <kirill@shutemov.name> - 2016-05-03 12:10 +0200
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