From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6CB52C433DF for ; Fri, 17 Jul 2020 17:37:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4B53020737 for ; Fri, 17 Jul 2020 17:37:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727101AbgGQRhN (ORCPT ); Fri, 17 Jul 2020 13:37:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44944 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726293AbgGQRhN (ORCPT ); Fri, 17 Jul 2020 13:37:13 -0400 Received: from shards.monkeyblade.net (shards.monkeyblade.net [IPv6:2620:137:e000::1:9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27E03C0619D2 for ; Fri, 17 Jul 2020 10:37:13 -0700 (PDT) Received: from localhost (unknown [IPv6:2601:601:9f00:477::3d5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id B7FEC135984B4; Fri, 17 Jul 2020 10:37:12 -0700 (PDT) Date: Fri, 17 Jul 2020 10:37:11 -0700 (PDT) Message-Id: <20200717.103711.2273998579805096655.davem@davemloft.net> To: echaudro@redhat.com Cc: netdev@vger.kernel.org, dev@openvswitch.org, kuba@kernel.org, pabeni@redhat.com, pshelar@ovn.org Subject: Re: [PATCH net-next] net: openvswitch: reorder masks array based on usage From: David Miller In-Reply-To: <159481496860.37198.8385493040681064040.stgit@ebuild> References: <159481496860.37198.8385493040681064040.stgit@ebuild> X-Mailer: Mew version 6.8 on Emacs 26.3 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Fri, 17 Jul 2020 10:37:13 -0700 (PDT) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Eelco Chaudron Date: Wed, 15 Jul 2020 14:09:28 +0200 > This patch reorders the masks array every 4 seconds based on their > usage count. This greatly reduces the masks per packet hit, and > hence the overall performance. Especially in the OVS/OVN case for > OpenShift. > > Here are some results from the OVS/OVN OpenShift test, which use > 8 pods, each pod having 512 uperf connections, each connection > sends a 64-byte request and gets a 1024-byte response (TCP). > All uperf clients are on 1 worker node while all uperf servers are > on the other worker node. > > Kernel without this patch : 7.71 Gbps > Kernel with this patch applied: 14.52 Gbps > > We also run some tests to verify the rebalance activity does not > lower the flow insertion rate, which does not. > > Signed-off-by: Eelco Chaudron > Tested-by: Andrew Theurer Applied, thanks.