From mboxrd@z Thu Jan 1 00:00:00 1970 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 From: Zhang Chen Date: Wed, 19 Jul 2017 15:29:58 +0800 Message-ID: <1500449399-19107-4-git-send-email-zhangchen.fnst@cn.fujitsu.com> 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 Content-Type: text/plain Subject: [Qemu-devel] [PATCH V3 3/4] net/colo-compare.c: Adjust net queue pop order for performance List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu devel , Jason Wang Cc: Zhang Chen , zhanghailiang , Li Zhijian , "Dr . David Alan Gilbert" 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) { -- 2.7.4