Received: by 2002:ac0:a5a6:0:0:0:0:0 with SMTP id m35-v6csp733128imm; Thu, 13 Sep 2018 07:00:28 -0700 (PDT) X-Google-Smtp-Source: ANB0VdYI/zGm8a4IwJnmThPNqD/OZvRQUni3k2qgH11MlGpwlz3HjA5wp6XPRxchZDJMW95m1e2+ X-Received: by 2002:a62:5882:: with SMTP id m124-v6mr7626280pfb.249.1536847228885; Thu, 13 Sep 2018 07:00:28 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1536847228; cv=none; d=google.com; s=arc-20160816; b=BNghiAbumsD9DJVgbPnAvcidRSKsa7WtOqZrXeAj3QGSEr0forQGV0vwKw9YvUfimy dEiW6yf1Ev4nOaPKlsyH1L+8M1OPuh9WSUeIn3mOw9uzdhcSF6EH8mG33gpaNLDcnoz8 //jjdiJkmTpgAAL4MwA29B+Unbo5E3W5UEbxuWWF8a0Kx04/G4GdINYOXZDZ93j+95h5 TfbECwHhOLKIjrEwH0lgnKDQkeC1pj8gQEXgnkfuaNOOlZrwmI6iR+cg04XAa5IDrZY5 V8eFH5rLPk1ILy07hoVECUDYFFq1DKiXTygxQ3xAMEqpwaXY5o9iWE3iWxfuF0rdaELt mh3w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=iXb6rdCbUvhlL0r6v9aSqolcKR3n9pXlxumQg5RhlRs=; b=i134v6xd9WfZ3EGn5OC+Q3o2fGbx1IQKtNkPmfGF9a1NS/CsQjwKh5BFnrfmMd4FkH ys0blMg335QTC2NhulRq8csEi3hswMPnsGGpgViX/PyobjJgae3IU+I+mt/QKlPuhwtO 1zcQVDfiHG/+hMDgO2t0Sj/RuEDuARZknT9wE0fuHqHZ6PG4PgdRLK7+UhjN8kewOOaO MYYXrLYjzunPyZWu4ImyZ9iF4riWIyR9HhCnxBv7rG+iM66q0V7MpPl+bFgaXH4m/yRp zo6BlkcnzY2V9kDSgbFGDeXnokfn5oaRnW7o02K+NJNdr0oiD9WXVffGmz/8+anEbbE0 2TGQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id cf16-v6si4361969plb.254.2018.09.13.07.00.13; Thu, 13 Sep 2018 07:00:28 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731628AbeIMTI3 (ORCPT + 99 others); Thu, 13 Sep 2018 15:08:29 -0400 Received: from Chamillionaire.breakpoint.cc ([146.0.238.67]:33598 "EHLO Chamillionaire.breakpoint.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731265AbeIMTI2 (ORCPT ); Thu, 13 Sep 2018 15:08:28 -0400 Received: from fw by Chamillionaire.breakpoint.cc with local (Exim 4.89) (envelope-from ) id 1g0S8q-0006K7-Mm; Thu, 13 Sep 2018 15:58:44 +0200 Date: Thu, 13 Sep 2018 15:58:44 +0200 From: Florian Westphal To: Wolfgang Walter Cc: netdev@vger.kernel.org, Florian Westphal , Steffen Klassert , David Miller , Linux Kernel Mailing List , Linus Torvalds Subject: Re: Regression: kernel 4.14 an later very slow with many ipsec tunnels Message-ID: <20180913135844.3ut6fxgx67t6ndtu@breakpoint.cc> References: <5781211.jtEvgqSZyO@stwm.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5781211.jtEvgqSZyO@stwm.de> User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Wolfgang Walter wrote: > thanks to the fix from Steffen Klassert I could now run 4.14.69 + his patch > and 4.18.7 + his patch without oopsing immediately. > > But I found that those kernels perform very bad. They perform so bad that they > are unusable for our router with about 3000 ipsec tunnels (tunnel mode network > <-> network). Can you do a 'perf record -a -g sleep 5' with 4.18 and provide 'perf report' result? It would be good to see where those cycles are spent.