From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frederic Leroy Subject: Re: scp stalls mysteriously Date: Tue, 1 Dec 2009 21:19:45 +0100 Message-ID: <20091201211945.505d3c98@houba> References: <20091127223545.2a752429@houba> <20091128010156.1219012a@houba> <20091130195004.38dbc319@houba> <20091130213727.2f4047d2@houba> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Netdev , Asdo To: "Ilpo =?UTF-8?B?SsOkcnZpbmVu?=" Return-path: Received: from sd-11162.dedibox.fr ([88.191.70.230]:36248 "EHLO sd-11162.dedibox.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752187AbZLAUUC convert rfc822-to-8bit (ORCPT ); Tue, 1 Dec 2009 15:20:02 -0500 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: Le Mon, 30 Nov 2009 23:37:56 +0200 (EET), "Ilpo J=C3=A4rvinen" a =C3=A9crit : > On Mon, 30 Nov 2009, Frederic Leroy wrote: > > Could you try btw to disable frto (set tcp_frto sysctl to zero), in > theory it could cause zero cwnd if something else is wrong too (I > haven't yet read them all through so there might be other places > where a zero cwnd can be set). Also I'm interested what happens if > you disable timestamps, is the problem still reproducable. I made 3 new traces and put it in the usual place. One with frto set to 0, one just after with frto set to 2. And the last with timestamp disabled.=20 All stream has stalled. --=20 =46r=C3=A9d=C3=A9ric Leroy