From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39385) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XtG82-000536-Op for qemu-devel@nongnu.org; Tue, 25 Nov 2014 08:26:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XtG7w-0006pQ-4q for qemu-devel@nongnu.org; Tue, 25 Nov 2014 08:26:02 -0500 Received: from mx1.redhat.com ([209.132.183.28]:54057) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XtG7v-0006nx-Da for qemu-devel@nongnu.org; Tue, 25 Nov 2014 08:25:55 -0500 Date: Tue, 25 Nov 2014 13:25:46 +0000 From: Stefan Hajnoczi Message-ID: <20141125132546.GH21126@stefanha-thinkpad.redhat.com> References: <1416844620-17717-1-git-send-email-mreitz@redhat.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="ISKrrfpKsPiF35CV" Content-Disposition: inline In-Reply-To: <1416844620-17717-1-git-send-email-mreitz@redhat.com> Subject: Re: [Qemu-devel] [PATCH v2 00/12] qcow2: Add new overlap check functions List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Max Reitz Cc: Kevin Wolf , Peter Lieven , qemu-devel@nongnu.org --ISKrrfpKsPiF35CV Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Nov 24, 2014 at 04:56:48PM +0100, Max Reitz wrote: > * CPU usage at runtime decreased by 150 to 275 percent on > overlap-check-heavy tasks > * No additional performance problems at loading time (in theory has the > same runtime complexity as a single overlap check right now; in > practice I could not find any problems) > * Decent RAM usage (40 kB for a 1 TB image with 64 kB clusters; 40 MB > for a 1 PB image etc. pp.) RAM usage seems fine and the CPU reduction is very nice. I will review the individual patches for QEMU 2.3. If there is demand it can be added to the QEMU 2.2 -stable branch at a later date. --ISKrrfpKsPiF35CV Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJUdINaAAoJEJykq7OBq3PIWaIH/jI8x5d/52FiBLl8ZyJMcN+E Q554rIlxquiDikUnxqyygvBANdAQF3VNwzDOboSNCGSSb9+C3yu1GeCY+OTVeIS9 WxFzbcYnNvipc94aG9uRIFzLv599AQVf8aCJdFmhdSywqbJU5/IOCMI0dBLYmlfB 80fo6POfIX0GuPJ5m7SLlHahBFtSEbt+La/GZrScmkJhAd7XphoDrPrwHxK3Nz3w FkoQYGk/YlwqGIOw/G0xKyL7OE9VNm3lGNK7iO5kWVrjex/dqmJNb/zmAvnAZZ7m VI5t0F4anIM8z+OeZwMYGxG2qfkBZ6BWaBKyYOjUnH5wGQLJ62jf+HL2AemKl8Q= =diDF -----END PGP SIGNATURE----- --ISKrrfpKsPiF35CV--