From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cyrill Gorcunov Subject: Re: [RFC] net: ipv4 -- Introduce ifa limit per net Date: Wed, 9 Mar 2016 19:51:28 +0300 Message-ID: <20160309165128.GK2207@uranus.lan> References: <1457136510.2761.8.camel@edumazet-ThinkPad-T530> <20160304.231109.1838919633640757059.davem@davemloft.net> <20160306100932.GP4184@uranus.lan> <1457281392.2663.5.camel@edumazet-ThinkPad-T530> <20160306170641.GA8820@uranus.lan> <20160309163919.GJ2207@uranus.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, solar@openwall.com, vvs@virtuozzo.com, avagin@virtuozzo.com, xemul@virtuozzo.com, vdavydov@virtuozzo.com, khorenko@virtuozzo.com To: Eric Dumazet , David Miller Return-path: Received: from mail-lb0-f174.google.com ([209.85.217.174]:33756 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753598AbcCIQvx (ORCPT ); Wed, 9 Mar 2016 11:51:53 -0500 Received: by mail-lb0-f174.google.com with SMTP id k15so75028433lbg.0 for ; Wed, 09 Mar 2016 08:51:52 -0800 (PST) Content-Disposition: inline In-Reply-To: <20160309163919.GJ2207@uranus.lan> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, Mar 09, 2016 at 07:39:19PM +0300, Cyrill Gorcunov wrote: > On Sun, Mar 06, 2016 at 08:06:41PM +0300, Cyrill Gorcunov wrote: > > > > > > Well, this looks like LOCKDEP kernel. Are you really running LOCKDEP on > > > production kernels ? > > > > Hi Eric, David. Sorry for the delay. Finally I've measured the > latency on the hw. It's i7-2600 cpu with 16G of memory. Here > are the collected data. ... > > > Also here is a graph for the data collected (blue line: unpatched > version, red -- patched. Of course with patched version it become > a way more better but still hanging). > > https://docs.google.com/spreadsheets/d/1eyQDxjuZY2DHKYksGACpHDDcV1Bd92e-ZiY8ywPKshA/edit?usp=sharing > > The perf output earlier shows the "perf top" when addresses > are created and when they are releasing. In text form ------------- Num of addresses Unpatched (sec) Patched (sec) 4 1 1 2704 5 5 10404 20 20 23104 45 42 40804 83 74 63504 139 113