From patchwork Fri Oct 14 15:28:23 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juan Quintela X-Patchwork-Id: 9377009 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id F1C55607FD for ; Fri, 14 Oct 2016 16:00:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E1BA02A78F for ; Fri, 14 Oct 2016 16:00:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D51692A791; Fri, 14 Oct 2016 16:00:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C7AD32A78F for ; Fri, 14 Oct 2016 15:59:58 +0000 (UTC) Received: from localhost ([::1]:48087 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bv4tp-0007lI-US for patchwork-qemu-devel@patchwork.kernel.org; Fri, 14 Oct 2016 11:59:57 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54170) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bv4Pu-0007XL-5q for qemu-devel@nongnu.org; Fri, 14 Oct 2016 11:29:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bv4Pp-0008Lh-VQ for qemu-devel@nongnu.org; Fri, 14 Oct 2016 11:29:01 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58916) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bv4Pp-0008LY-PT for qemu-devel@nongnu.org; Fri, 14 Oct 2016 11:28:57 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 530393D96D; Fri, 14 Oct 2016 15:28:57 +0000 (UTC) Received: from emacs.mitica (ovpn-116-76.ams2.redhat.com [10.36.116.76]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u9EFSV1I025555; Fri, 14 Oct 2016 11:28:55 -0400 From: Juan Quintela To: qemu-devel@nongnu.org Date: Fri, 14 Oct 2016 17:28:23 +0200 Message-Id: <1476458903-7888-16-git-send-email-quintela@redhat.com> In-Reply-To: <1476458903-7888-1-git-send-email-quintela@redhat.com> References: <1476458903-7888-1-git-send-email-quintela@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Fri, 14 Oct 2016 15:28:57 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 15/15] docs/xbzrle: correction X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: amit.shah@redhat.com, Cao jin , dgilbert@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Cao jin 1. Default cache size is 64MB. 2. Semantics correction. Signed-off-by: Cao jin Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela --- docs/xbzrle.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/xbzrle.txt b/docs/xbzrle.txt index 52c8511..c0a7dfd 100644 --- a/docs/xbzrle.txt +++ b/docs/xbzrle.txt @@ -42,7 +42,7 @@ nzrun = length byte... length = uleb128 encoded integer On the sender side XBZRLE is used as a compact delta encoding of page updates, -retrieving the old page content from the cache (default size of 512 MB). The +retrieving the old page content from the cache (default size of 64MB). The receiving side uses the existing page's content and XBZRLE to decode the new page's content. @@ -73,7 +73,7 @@ e9 07 0f 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 03 01 67 01 01 69 Cache update strategy ===================== -Keeping the hot pages in the cache is effective for decreased cache +Keeping the hot pages in the cache is effective for decreasing cache misses. XBZRLE uses a counter as the age of each page. The counter will increase after each ram dirty bitmap sync. When a cache conflict is detected, XBZRLE will only evict pages in the cache that are older than