From owner-freebsd-net@FreeBSD.ORG Fri Jul 13 00:21:57 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 57943106564A for ; Fri, 13 Jul 2012 00:21:57 +0000 (UTC) (envelope-from ihsan@grep.my) Received: from svc02-kul.b.n3labs.my (svc02-kul.b.n3labs.my [IPv6:2400:3700:10::61]) by mx1.freebsd.org (Postfix) with ESMTP id CDCC68FC0C for ; Fri, 13 Jul 2012 00:21:56 +0000 (UTC) Received: from [IPv6:2400:3700:49::9413:20ad:64e7:e873] (unknown [IPv6:2400:3700:49:0:9413:20ad:64e7:e873]) by svc02-kul.b.n3labs.my (Postfix) with ESMTPSA id 4CEEAC60230; Fri, 13 Jul 2012 08:21:54 +0800 (MYT) Mime-Version: 1.0 (Apple Message framework v1278) Content-Type: text/plain; charset=iso-8859-1 From: Ihsan Junaidi Ibrahim In-Reply-To: Date: Fri, 13 Jul 2012 08:21:31 +0800 Content-Transfer-Encoding: quoted-printable Message-Id: <0FF9D20C-4D88-484F-AEB9-E6F10094E018@grep.my> References: <3AC8C112-A80B-4D8F-89DA-DA38E4AB524F@grep.my> To: Jack Vogel X-Mailer: Apple Mail (2.1278) Cc: freebsd-net@freebsd.org Subject: Re: Enable LRO by default on igb X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Jul 2012 00:21:57 -0000 I did a quick file download test on the LRO-enabled device (forwarding = is turned on) and there's no perceive drop-off in forwarding = performance. The test is very unscientific (over the Internet) as I don't have access = to a local test bed where I can do more in-depth testing. Sysctl LRO stats gave me these: dev.igb.0.queue0.lro_queued: 53 dev.igb.0.queue0.lro_flushed: 53 dev.igb.0.queue1.lro_queued: 121 dev.igb.0.queue1.lro_flushed: 120 dev.igb.0.queue2.lro_queued: 14895 dev.igb.0.queue2.lro_flushed: 8200 dev.igb.0.queue3.lro_queued: 77 dev.igb.0.queue3.lro_flushed: 76 Just curious on why flushed and queued numbers did not seem to match. ihsan On Jul 8, 2012, at 12:26 AM, Jack Vogel wrote: > Because of problems with forwarding when it was turned on, however = this has > recently been fixed supposedly, if someone using the driver in an > environment > with forwarding could verify that there is no problem with it enabled = I'd > be happy > to change it to be on by default. >=20 > Jack >=20 >=20 > On Sat, Jul 7, 2012 at 9:01 AM, Ihsan Junaidi Ibrahim = wrote: >=20 >> Hi folks, >>=20 >> Just curious is there a reason why LRO isn't turned on by default for >> igb(4) like for other capabilities? >>=20 >> I have a couple of 82575EB igb devices and LRO had to be turned on >> manually. >>=20 >> Thanks._______________________________________________ >> freebsd-net@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to = "freebsd-net-unsubscribe@freebsd.org" >>=20 > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"