From owner-freebsd-stable@FreeBSD.ORG Thu Feb 4 02:00:19 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 256AC1065676 for ; Thu, 4 Feb 2010 02:00:19 +0000 (UTC) (envelope-from jonc@chen.org.nz) Received: from chen.org.nz (ip-58-28-152-174.static-xdsl.xnet.co.nz [58.28.152.174]) by mx1.freebsd.org (Postfix) with ESMTP id B1E108FC15 for ; Thu, 4 Feb 2010 02:00:18 +0000 (UTC) Received: by chen.org.nz (Postfix, from userid 1000) id D9EF0E043B; Thu, 4 Feb 2010 15:00:15 +1300 (NZDT) Date: Thu, 4 Feb 2010 15:00:15 +1300 From: Jonathan Chen To: Pyun YongHyeon Message-ID: <20100204020015.GA17301@osiris.chen.org.nz> References: <20100202193616.GA16953@osiris.chen.org.nz> <20100202212029.GA5295@asgard.cs.uoi.gr> <20100203225255.GB14315@osiris.chen.org.nz> <20100204012503.GK5901@michelle.cdnetworks.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100204012503.GK5901@michelle.cdnetworks.com> User-Agent: Mutt/1.4.2.3i Cc: freebsd-stable@freebsd.org Subject: Re: if_bge upload stalls repeatedly (Was: 8-STABLE outgoing scp stalling frequently) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Feb 2010 02:00:19 -0000 On Wed, Feb 03, 2010 at 05:25:03PM -0800, Pyun YongHyeon wrote: > On Thu, Feb 04, 2010 at 11:52:55AM +1300, Jonathan Chen wrote: > > On Tue, Feb 02, 2010 at 11:20:29PM +0200, Nikos Ntarmos wrote: > > > On Wed, Feb 03, 2010 at 08:36:16AM +1300, Jonathan Chen wrote: > > > > Hi, > > > > > > > > I've noticed that on a recent 8-STABLE/amd64, scp(1) appears to be > > > > stalling very frequently. This is the output from a "scp -v -v" > > > > of a 300Mb file from a local to a remote within an internal network: > > > > [...] > > > > Does anyone know what's happening here? Any tips on how to track down > > > > what the problem is? The network config appears to be fine - fetch(1) will > > > > have downloads speeds of up to 300KB/s. > > > > > > But how about upload speeds? It seems that's where scp is suffering as > > > well. > > > > This is the obvious test that I should have done; and you're hit the > > nail on the head. bge(4) on 8-STABLE (csup'd 4-Feb-2010) has a very > > bad upload speed. > > > > I've just tried using ftp to transfer some files: > > > > Upload speed: starts at 63 KB/s, falls rapidly before stalling. > > Download speeds: starts at 9 MB/s, increasing slightly before completing. > I'm not sure but recently added code to support TSO may cause the > issue. Would you show me verbose boot output(only bge(4) related > one)? bge0: mem 0xf1bf0000-0xf1bfffff irq 17 at device 0.0 on pci9 bge0: Reserved 0x10000 bytes for rid 0x10 type 3 at 0xf1bf0000 bge0: adjust device control 0x2000 -> 0x5000 bge0: attempting to allocate 1 MSI vectors (1 supported) bge0: using IRQ 258 for MSI bge0: CHIP ID 0x0000a002; ASIC REV 0x0a; CHIP REV 0xa0; PCI-E bge0: Disabling fastboot bge0: Disabling fastboot miibus0: on bge0 bge0: bpf attached bge0: Ethernet address: 00:1d:09:d2:d1:9e bge0: [MPSAFE] bge0: [FILTER] bge0: Disabling fastboot bge0: Disabling fastboot bge0: link UP >To rule out possible TSO issue, disable TSO and try it > again(#ifconfig bge0 -tso). Does it make any difference? Yup, it sure does! With a TSO disabled, my upload and download speeds are pretty much symmetrical at a decent 10MB/s. Thanks! -- Jonathan Chen ---------------------------------------------------------------------- Do not take life too seriously. You will never get out of it alive.