From patchwork Fri Aug 27 17:47:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anton Ivanov X-Patchwork-Id: 1521738 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=openvswitch.org (client-ip=2605:bc80:3010::137; helo=smtp4.osuosl.org; envelope-from=ovs-dev-bounces@openvswitch.org; receiver=) Received: from smtp4.osuosl.org (smtp4.osuosl.org [IPv6:2605:bc80:3010::137]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4Gx6dT2N9Nz9sT6 for ; Sat, 28 Aug 2021 03:48:28 +1000 (AEST) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 889B940621; Fri, 27 Aug 2021 17:48:25 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id H0IlNSSSJCOu; Fri, 27 Aug 2021 17:48:24 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp4.osuosl.org (Postfix) with ESMTPS id 48680401F0; Fri, 27 Aug 2021 17:48:23 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 9D5FBC0024; Fri, 27 Aug 2021 17:48:21 +0000 (UTC) X-Original-To: ovs-dev@openvswitch.org Delivered-To: ovs-dev@lists.linuxfoundation.org Received: from smtp2.osuosl.org (smtp2.osuosl.org [IPv6:2605:bc80:3010::133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 64C28C001A for ; Fri, 27 Aug 2021 17:48:19 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 51B5F40812 for ; Fri, 27 Aug 2021 17:48:19 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4QMziGbfUxuv for ; Fri, 27 Aug 2021 17:48:18 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from www.kot-begemot.co.uk (ivanoab7.miniserver.com [37.128.132.42]) by smtp2.osuosl.org (Postfix) with ESMTPS id 35CD940810 for ; Fri, 27 Aug 2021 17:48:17 +0000 (UTC) Received: from tun252.jain.kot-begemot.co.uk ([192.168.18.6] helo=jain.kot-begemot.co.uk) by www.kot-begemot.co.uk with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mJfxc-0005Fh-2a for ovs-dev@openvswitch.org; Fri, 27 Aug 2021 17:48:16 +0000 Received: from jain.kot-begemot.co.uk ([192.168.3.3]) by jain.kot-begemot.co.uk with esmtp (Exim 4.92) (envelope-from ) id 1mJfxV-00072B-OQ; Fri, 27 Aug 2021 18:48:10 +0100 From: anton.ivanov@cambridgegreys.com To: ovs-dev@openvswitch.org Date: Fri, 27 Aug 2021 18:47:58 +0100 Message-Id: <20210827174800.26986-2-anton.ivanov@cambridgegreys.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210827174800.26986-1-anton.ivanov@cambridgegreys.com> References: <20210827174800.26986-1-anton.ivanov@cambridgegreys.com> MIME-Version: 1.0 X-Clacks-Overhead: GNU Terry Pratchett Cc: Anton Ivanov Subject: [ovs-dev] [OVN Patch v4 2/4] northd: Resize the hash to correct parameters after build X-BeenThere: ovs-dev@openvswitch.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: ovs-dev-bounces@openvswitch.org Sender: "dev" From: Anton Ivanov Parallel builds may result in suboptimal hash bucket sizing. In the absense of dp-groups this does not matter as the hash is purely storage and not used for lookups during the build. Such a hash needs to be resized to a correct size at the end of the build to ensure that any lookups during the lflow reconcilliation phase are done as fast as possible. Signed-off-by: Anton Ivanov --- northd/ovn-northd.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c index 8c653cf52..71458ff4e 100644 --- a/northd/ovn-northd.c +++ b/northd/ovn-northd.c @@ -13057,6 +13057,11 @@ build_lflows(struct northd_context *ctx, struct hmap *datapaths, igmp_groups, meter_groups, lbs, bfd_connections); + /* Parallel build may result in a suboptimal hash. Resize the + * hash to a correct size before doing lookups */ + + hmap_expand(&lflows); + if (hmap_count(&lflows) > max_seen_lflow_size) { max_seen_lflow_size = hmap_count(&lflows); }