From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Jones Subject: Re: [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s Date: Thu, 21 Nov 2013 15:23:09 -0800 Message-ID: <528E95DD.3060209@hp.com> References: <1384869194.8604.92.camel@edumazet-glaptop2.roam.corp.google.com> <20131119174323.GH913@1wt.eu> <1384885910.8604.110.camel@edumazet-glaptop2.roam.corp.google.com> <20131119184121.GN913@1wt.eu> <874n780wzc.fsf@natisbad.org> <20131120191145.GP8581@1wt.eu> <87txf692zx.fsf@natisbad.org> <20131120215435.GT8581@1wt.eu> <20131121004430.GX8581@1wt.eu> <871u298lv6.fsf@natisbad.org> <20131121215259.GE18513@1wt.eu> <1385071201.10637.69.camel@edumazet-glaptop2.roam.corp.google.com> <87txf54b76.fsf@natisbad.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Willy Tarreau , Thomas Petazzoni , Florian Fainelli , simon.guinot@sequanux.org, netdev@vger.kernel.org, edumazet@google.com, Cong Wang , linux-arm-kernel@lists.infradead.org To: Arnaud Ebalard , Eric Dumazet Return-path: Received: from g4t0017.houston.hp.com ([15.201.24.20]:30407 "EHLO g4t0017.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753991Ab3KUXXQ (ORCPT ); Thu, 21 Nov 2013 18:23:16 -0500 In-Reply-To: <87txf54b76.fsf@natisbad.org> Sender: netdev-owner@vger.kernel.org List-ID: On 11/21/2013 02:55 PM, Arnaud Ebalard wrote: > On the RN2120, for a file served from /run/shm (for apache and nginx): > > Apache nginx netperf > 131072: 102 MB/s 112 MB/s 941.11 Mb/s > 65536: 102 MB/s 112 MB/s 935.97 Mb/s > 32768: 101 MB/s 105 MB/s 940.49 Mb/s > 16384: 94 MB/s 90 MB/s 770.07 Mb/s > 8192: 83 MB/s 66 MB/s 556.79 Mb/s If you want to make the units common across all three tests, netperf accepts a global -f option to alter the output units. If you add -f M netperf will then emit results in MB/s (M == 1048576). I'm assuming of course that the MB/s of Apache and nginx are also M == 1048576. happy benchmarking, rick jones