From patchwork Wed Jul 19 07:29:58 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Chen X-Patchwork-Id: 9850627 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 95EB8602C8 for ; Wed, 19 Jul 2017 07:29:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 851BF2861A for ; Wed, 19 Jul 2017 07:29:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 797392861E; Wed, 19 Jul 2017 07:29:10 +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 D2F042861A for ; Wed, 19 Jul 2017 07:29:09 +0000 (UTC) Received: from localhost ([::1]:60215 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dXjPu-0006OO-Rr for patchwork-qemu-devel@patchwork.kernel.org; Wed, 19 Jul 2017 03:29:06 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41317) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dXjOe-0006Mc-EM for qemu-devel@nongnu.org; Wed, 19 Jul 2017 03:27:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dXjOd-0000f2-Hr for qemu-devel@nongnu.org; Wed, 19 Jul 2017 03:27:48 -0400 Received: from [59.151.112.132] (port=20158 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dXjOd-0000bK-59 for qemu-devel@nongnu.org; Wed, 19 Jul 2017 03:27:47 -0400 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="21494197" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 19 Jul 2017 15:27:35 +0800 Received: from G08CNEXCHPEKD02.g08.fujitsu.local (unknown [10.167.33.83]) by cn.fujitsu.com (Postfix) with ESMTP id DF43D46B53E2; Wed, 19 Jul 2017 15:27:32 +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 14.3.319.2; Wed, 19 Jul 2017 15:27:32 +0800 From: Zhang Chen To: qemu devel , Jason Wang Date: Wed, 19 Jul 2017 15:29:58 +0800 Message-ID: <1500449399-19107-4-git-send-email-zhangchen.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1500449399-19107-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> References: <1500449399-19107-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.56] X-yoursite-MailScanner-ID: DF43D46B53E2.AC511 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: 59.151.112.132 Subject: [Qemu-devel] [PATCH V3 3/4] 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 , zhanghailiang , Zhang Chen , "Dr . David Alan Gilbert" Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP 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 6aa5ea6..58c3250 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -489,7 +489,7 @@ 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, @@ -527,7 +527,7 @@ 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); if (pkt->creation_ms - s->checkpoint_time_ms > CHECKPOINT_MIN_TIME) {