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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D10A5C678D5 for ; Tue, 7 Mar 2023 09:57:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230423AbjCGJ5n (ORCPT ); Tue, 7 Mar 2023 04:57:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58556 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230413AbjCGJ5i (ORCPT ); Tue, 7 Mar 2023 04:57:38 -0500 Received: from mail.netfilter.org (mail.netfilter.org [217.70.188.207]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 12E5759E55; Tue, 7 Mar 2023 01:57:28 -0800 (PST) Date: Tue, 7 Mar 2023 10:57:24 +0100 From: Pablo Neira Ayuso To: Eric Dumazet Cc: "David S . Miller" , Jakub Kicinski , Paolo Abeni , Florian Westphal , Jozsef Kadlecsik , netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, coreteam@netfilter.org, eric.dumazet@gmail.com Subject: Re: [PATCH net] netfilter: conntrack: Message-ID: References: <20230307052254.198305-1-edumazet@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Tue, Mar 07, 2023 at 06:27:37AM +0100, Eric Dumazet wrote: > On Tue, Mar 7, 2023 at 6:22 AM Eric Dumazet wrote: > > > > Customers using GKE 1.25 and 1.26 are facing conntrack issues > > root caused to commit c9c3b6811f74 ("netfilter: conntrack: make > > max chain length random"). > > > > Even if we assume Uniform Hashing, a bucket often reachs 8 chained > > items while the load factor of the hash table is smaller than 0.5 > > > > Sorry for the messed patch title. > > This should have been: > > netfilter: conntrack: adopt safer max chain length > > Florian, Pablo, let me know if you want me to send a v2, thanks ! Applied, thanks