Date: Thu, 27 Aug 2015 23:32:22 -0700 From: hiren panchasara <hiren@strugglingcoder.info> To: Mark Johnston <markj@FreeBSD.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r287235 - in head/sys: sys vm Message-ID: <20150828063222.GO82991@strugglingcoder.info> In-Reply-To: <201508280044.t7S0iIBY038698@repo.freebsd.org> References: <201508280044.t7S0iIBY038698@repo.freebsd.org>
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--wxNrNKeE/ptr8Zbn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 08/28/15 at 12:44P, Mark Johnston wrote: > Author: markj > Date: Fri Aug 28 00:44:17 2015 > New Revision: 287235 > URL: https://svnweb.freebsd.org/changeset/base/287235 >=20 > Log: > Remove weighted page handling from vm_page_advise(). > =20 > This was added in r51337 as part of the implementation of > madvise(MADV_DONTNEED). Its objective was to ensure that the page daem= on > would eventually reclaim other unreferenced pages (i.e., unreferenced p= ages > not touched by madvise()) from the active queue. > =20 > Now that the pagedaemon performs steady scanning of the active page que= ue, > this weighted handling is unnecessary. Instead, always "cache" clean p= ages > by moving them to the head of the inactive page queue. This simplifies= the > implementation of vm_page_advise() and eliminates the fragmentation that > resulted from the distribution of pages among multiple queues. > =20 > Suggested by: alc > Reviewed by: alc > Sponsored by: EMC / Isilon Storage Division > Differential Revision: https://reviews.freebsd.org/D3401 Nice work! Can this be mfc'd to 10? Cheers, Hiren --wxNrNKeE/ptr8Zbn Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (FreeBSD) iQF8BAEBCgBmBQJV4AB2XxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRBNEUyMEZBMUQ4Nzg4RjNGMTdFNjZGMDI4 QjkyNTBFMTU2M0VERkU1AAoJEIuSUOFWPt/lvvcH+gJhwJiuyC3FJeOtKGrlHM0s fcDgrxzq2VXMPSnzEeNr5VKIEDIPo56KG/2PhQEj0hg8Yy9vcDDvx4ZX5brZjFwv Xvg+LfO3PA2Ywb6FOGJwy1AH12RQ4GLAx1wrm545LLlI33c/5ipH+hSXrzx2vO4t 1lHzprODHD16c5ofsxx3x095hIB2Xu+ktqnH2VqaFTwQXJihJy2sOwPPquUXN7RP NNADLJEa/lKXLIiKF5yKoINbqVuzCN8H7U7e5jp+Oays8/KOsDjxea3E5s/5jI2T MnO8UbDp1f1gWUkBLV21pSdXEbe2gE2UCxI+S+g6YO6CxcBXodjag024IhjNZVg= =5ZOc -----END PGP SIGNATURE----- --wxNrNKeE/ptr8Zbn--
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