From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58232) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1flv2z-0005M8-92 for qemu-devel@nongnu.org; Sat, 04 Aug 2018 07:48:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1flv2y-0008Tq-Cu for qemu-devel@nongnu.org; Sat, 04 Aug 2018 07:48:37 -0400 References: <20180729212744.23709-1-lbloch@janustech.com> <20180803073836.GC4380@localhost.localdomain> From: Leonid Bloch Message-ID: <51195db7-90c6-c05f-a7d9-04c5c3e5e83c@janustech.com> Date: Sat, 4 Aug 2018 14:48:15 +0300 MIME-Version: 1.0 In-Reply-To: <20180803073836.GC4380@localhost.localdomain> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB-large Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 0/6] qcow2: Make the L2 cache cover the whole image by default List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Kevin Wolf Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Max Reitz , Eric Blake On 08/03/2018 10:38 AM, Kevin Wolf wrote: > Am 29.07.2018 um 23:27 hat Leonid Bloch geschrieben: >> This series makes the qcow2 L2 cache cover the entire image by default. >> The importance of this change is in noticeable performance improvement, >> especially with heavy random I/O. The memory overhead is very small: >> only 1 MB of cache for every 8 GB of image size. On systems with very >> limited RAM the maximal cache size can be limited by the existing >> cache-size and l2-cache-size options. >> >> The L2 cache is also resized accordingly, by default, if the image is >> resized. > > Are you going to send a new version that makes the changes we agreed on? Yes, sure. Was somewhat busy. Will send today or tomorrow. Thanks for reminding. Leonid. > > Kevin >