Date: Fri, 13 Jul 2012 08:21:31 +0800 From: Ihsan Junaidi Ibrahim <ihsan@grep.my> To: Jack Vogel <jfvogel@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: Enable LRO by default on igb Message-ID: <0FF9D20C-4D88-484F-AEB9-E6F10094E018@grep.my> In-Reply-To: <CAFOYbcn6ETrNFGLBS1r46Jovr7p5QbdcuCKyheA_xw18GiYgtw@mail.gmail.com> References: <3AC8C112-A80B-4D8F-89DA-DA38E4AB524F@grep.my> <CAFOYbcn6ETrNFGLBS1r46Jovr7p5QbdcuCKyheA_xw18GiYgtw@mail.gmail.com>
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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 <ihsan@grep.my> = 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"
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