Date: Mon, 25 Jan 2010 19:49:31 +0100 From: Lars Eggert <lars.eggert@nokia.com> To: Nick Rogers <ncrogers@gmail.com> Cc: "pyunyh@gmail.com" <pyunyh@gmail.com>, Jason Chambers <jchambers@ucla.edu>, "stable@freebsd.org" <stable@freebsd.org>, "jfvogel@gmail.com" <jfvogel@gmail.com> Subject: Re: em interface slow down on 8.0R Message-ID: <02307620-ECDC-4E8B-A5B1-FF8491E226C4@nokia.com> In-Reply-To: <147432021001251038r69393ab3m1a797e58f9fa905a@mail.gmail.com> References: <20091201.102925.218343479.hrs@allbsd.org> <2a41acea0912021249w1aed8e83kf89ceb1e6041edaf@mail.gmail.com> <2a41acea0912021514r2d44dd33n4c364518d7fe1703@mail.gmail.com> <20091203.182931.129751456.hrs@allbsd.org> <4B43F6EE.3010308@ucla.edu> <147432021001242047k659a26d0s44b35164920aeb74@mail.gmail.com> <95D3CB82-BC44-491D-86E4-5CB82F89C0FC@nokia.com> <147432021001250825p202914a7ka5a2c1d28d96bac3@mail.gmail.com> <20100125182257.GG1187@michelle.cdnetworks.com> <147432021001251038r69393ab3m1a797e58f9fa905a@mail.gmail.com>
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--Apple-Mail-16-522846224 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hi, On 2010-1-25, at 19:38, Nick Rogers wrote: >> On Mon, Jan 25, 2010 at 10:22 AM, Pyun YongHyeon <pyunyh@gmail.com> = wrote: >> I'm not sure you're seeing a checksum offload bug of em(4) but the >> bug is easily reproducible in VLAN environments. If the issue is >> gone when you disable TX checksum offloading, see kern/141843 for >> for more detailed information as well as fix. >>=20 > Good to know, but I am having a similar problem on another em(4) = interface that has no VLAN interfaces.=20 FYI, I also have these issues without using VLANs, and turning off TSO = fixed them. Lars= --Apple-Mail-16-522846224--
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