From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from bu3sch.de ([62.75.166.246]:35963 "EHLO vs166246.vserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751629AbZEUKRd (ORCPT ); Thu, 21 May 2009 06:17:33 -0400 From: Michael Buesch To: matthieu castet Subject: Re: b43 : under high load, ack are lost Date: Thu, 21 May 2009 12:16:52 +0200 Cc: linux-wireless@vger.kernel.org References: <200905202334.40841.mb@bu3sch.de> In-Reply-To: <200905202334.40841.mb@bu3sch.de> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Message-Id: <200905211216.53012.mb@bu3sch.de> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Wednesday 20 May 2009 23:34:40 Michael Buesch wrote: > On Wednesday 20 May 2009 23:09:47 matthieu castet wrote: > > I see also some period were the AP seem to drop all packet. > > I am wondering if it can be due to slow recalibration. > > Do you now how much take calibration were mac is down ? > > Something like 30/40/50 milliseconds. I don't know. Somewhere in that range. > > But I think it doesn't drop packets due to recal. I think it's simply > because the b43 PHY code is completely broken. > Btw, you can easily test this with echo -n 1 > /debug/b43/phy0/debug_pwork_stop This completely stops periodic recalibration. -- Greetings, Michael.