From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chad Versace Subject: Re: [PATCH] drm/i915: Support to create uncached user mapping for a Gem object Date: Tue, 09 Dec 2014 20:48:38 -0800 Message-ID: <5487D0A6.4090402@linux.intel.com> References: <1413290856-12990-1-git-send-email-chris@chris-wilson.co.uk> <1414060436-29442-1-git-send-email-akash.goel@intel.com> <20141023115646.GK13512@nuc-i3427.alporthouse.com> <20141023132336.GM13512@nuc-i3427.alporthouse.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1493830638==" Return-path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id 154F16E017 for ; Tue, 9 Dec 2014 20:48:41 -0800 (PST) In-Reply-To: <20141023132336.GM13512@nuc-i3427.alporthouse.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson , akash.goel@intel.com, intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============1493830638== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="dJ0UqpJksvQrInLaxRuBENuqxOOl4sTNV" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --dJ0UqpJksvQrInLaxRuBENuqxOOl4sTNV Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 10/23/2014 06:23 AM, Chris Wilson wrote: > On Thu, Oct 23, 2014 at 12:56:46PM +0100, Chris Wilson wrote: >> On Thu, Oct 23, 2014 at 04:03:56PM +0530, akash.goel@intel.com wrote: >>> From: Akash Goel >>> >> >>> This is for improving the CPU write operation performance, as with su= ch >>> mapping, writes are almost 50% faster than with mmap_gtt. Also it avo= ids the > Oops, bugs beware. I wasn't calling the ioctl correctly. > Having re-run the test, I now get: >=20 > gtt wc Operation > -------- ------ --------- > 424000.0 1.30 ShmPutImage 10x10 square=20 > 29500.0 1.44 ShmPutImage 100x100 square=20 > 1510.0 1.38 ShmPutImage 500x500 square=20 >=20 > Supporting your claims. Very nice. What are the units for these numbers? --dJ0UqpJksvQrInLaxRuBENuqxOOl4sTNV Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJUh9CmAAoJEAIvNt057x8iu2kQALvomMrvigywF/BA0c7qwXMM c4bEhOH6X7jdZ3JoFi+16hOg2ZavUXCe2tKvtHcTnZTBOz0Hvu7R0GIDdyDSKUYc sXfByu82vUIqClEutF4TeZ70kSg4UIh0WtQQYmkIm10ochJhrk9Zk3eAOcMPAz3v fYVyqSL69N48TnTcJ1QgXABvx44D6sKw05abqqcWKagf8jkJegJ7Q6QlVtf9eLsE uMjTQ0/GQw4TNwvxGZb7nScee+mDUIFbY9p2HwIH9KQt5n7o7Xt83ZMNsBqyLp2i wLyrvVinBgaKociMXHgQmvIzjS+FBsYRGHaU1mPAelBbD1/8kqyuzi4HRD/+vnZv NSxhWqw6Ig9PInBBtIbuPkQ8kNpVqLq1ZJKZ8HjBc0WX4ZeTiF/KnYowSoSUSSZY uH8VlLJttrxZH7dF/Y2eukCltP3sF25MhwhpBRJvIooJBp8HAyLL0u6/lUQb6nOR Kw4NU9g/4ggNr5M/9jPqzXfokT7EkIEL56NJuLq2q/uCZfs/OB5maBEZNgVtxPCh 8eawCHFCpQZ562pK2R54dTv/yhNNHIIaT5u1zMXrpLUWdnMfcS4ysYTtA+wzr7P3 7rNzGo9ozIu/Yv25tgIhvey18elGhtPV6EcQfXEA8bam/BSa7NHn3CGPWG/nZiuD 1JEc8ao8BhgWVI40ujr0 =pGT1 -----END PGP SIGNATURE----- --dJ0UqpJksvQrInLaxRuBENuqxOOl4sTNV-- --===============1493830638== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4 IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK --===============1493830638==--