Return-path: Received: from s3.sipsolutions.net ([144.76.43.152]:50558 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751363AbaDXICm (ORCPT ); Thu, 24 Apr 2014 04:02:42 -0400 Message-ID: <1398326539.4154.0.camel@jlt4.sipsolutions.net> (sfid-20140424_100312_949622_2C6DBF08) Subject: Re: iwlmvm: High latencies and low RX rate with firmware version 22.24.8.0 but not with 22.1.7.0 From: Johannes Berg To: =?ISO-8859-1?Q?Bj=F8rn?= Mork Cc: Emmanuel Grumbach , linux-wireless@vger.kernel.org, ilw@linux.intel.com Date: Thu, 24 Apr 2014 10:02:19 +0200 In-Reply-To: <87sip3b20f.fsf@nemi.mork.no> (sfid-20140424_094956_885901_C7CBD498) References: <87sip3b20f.fsf@nemi.mork.no> (sfid-20140424_094956_885901_C7CBD498) Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, 2014-04-24 at 09:49 +0200, Bjørn Mork wrote: > I realize that icmp echos don't necessarily tell the whole truth, but > the same latency difference is noticable on e.g interactive ssh sessions > as well. So I believe pinging illustrates the difference pretty well. > The *only* thing changed between these sessions is the iwl > firmware. Position, channel, driver, hardware is the same. This was > captured on 2.4GHz. There might be differences in how the driver treats the firmware - I think it probably turns off powersave for the older one. Have you tried turning it off manually? johannes