From patchwork Tue Sep 5 06:31:05 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Chen X-Patchwork-Id: 809964 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3xmcM973ftz9sNr for ; Tue, 5 Sep 2017 16:32:05 +1000 (AEST) Received: from localhost ([::1]:57090 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dp7P2-000437-3f for incoming@patchwork.ozlabs.org; Tue, 05 Sep 2017 02:32:04 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57465) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dp7Mt-00030j-U8 for qemu-devel@nongnu.org; Tue, 05 Sep 2017 02:29:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dp7Mp-0005uP-9w for qemu-devel@nongnu.org; Tue, 05 Sep 2017 02:29:51 -0400 Received: from mail.cn.fujitsu.com ([183.91.158.132]:51446 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dp7Mo-0005q6-V5 for qemu-devel@nongnu.org; Tue, 05 Sep 2017 02:29:47 -0400 X-IronPort-AV: E=Sophos;i="5.41,478,1498492800"; d="scan'208";a="25224691" Received: from localhost (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 05 Sep 2017 14:29:46 +0800 Received: from G08CNEXCHPEKD02.g08.fujitsu.local (unknown [10.167.33.83]) by cn.fujitsu.com (Postfix) with ESMTP id 7A25A472554C; Tue, 5 Sep 2017 14:29:45 +0800 (CST) Received: from localhost.localdomain (10.167.226.56) by G08CNEXCHPEKD02.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 5 Sep 2017 14:29:44 +0800 From: Zhang Chen To: qemu devel , Jason Wang Date: Tue, 5 Sep 2017 14:31:05 +0800 Message-ID: <1504593066-14023-3-git-send-email-zhangchen.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1504593066-14023-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> References: <1504593066-14023-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.56] X-yoursite-MailScanner-ID: 7A25A472554C.AC2D2 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: zhangchen.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 183.91.158.132 Subject: [Qemu-devel] [PATCH V6 2/3] net/colo-compare.c: Adjust net queue pop order for performance 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: Li Zhijian , Zhang Chen , Zhang Chen Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The packet_enqueue() use g_queue_push_tail() to enqueue net packet, so it is more efficent way use g_queue_pop_head() to get packet for compare. That will improve the success rate of comparison. In my test the performance of ftp put 1000M file will increase 10% Signed-off-by: Zhang Chen --- net/colo-compare.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/colo-compare.c b/net/colo-compare.c index d088262..c31adc6 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -483,7 +483,7 @@ static void colo_compare_connection(void *opaque, void *user_data) while (!g_queue_is_empty(&conn->primary_list) && !g_queue_is_empty(&conn->secondary_list)) { - pkt = g_queue_pop_tail(&conn->primary_list); + pkt = g_queue_pop_head(&conn->primary_list); switch (conn->ip_proto) { case IPPROTO_TCP: result = g_queue_find_custom(&conn->secondary_list, @@ -521,7 +521,7 @@ static void colo_compare_connection(void *opaque, void *user_data) * until next comparison. */ trace_colo_compare_main("packet different"); - g_queue_push_tail(&conn->primary_list, pkt); + g_queue_push_head(&conn->primary_list, pkt); /* TODO: colo_notify_checkpoint();*/ break; }