From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Furniss Date: Sun, 16 Apr 2006 18:40:01 +0000 Subject: Re: [LARTC] htb overrate with 2.6.16 Message-Id: <44428F81.1090604@dsl.pipex.com> List-Id: References: <1145095091.18168.26.camel@indigo.declera.com> In-Reply-To: <1145095091.18168.26.camel@indigo.declera.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org Yanko Kaneti wrote: > On Sun, 2006-04-16 at 03:03 +0100, Andy Furniss wrote: > >>Yanko Kaneti wrote: >> >> >>>Setting mtu 16500 for the class fixed it. But I wonder where did these >>>giants come from in the first place? The mtu of the interface is and was >>>1500. Or so ifconfig and ip link tell me. Or this is some other mtu we >>>are talking about... >> >>Hmm I didn't expect that - maybe there is some problem with the nic >>drivers not obeying kernel - is there any tso offload etc. at work here ? > > > Yes and its on by default. The interface mtu still says 1500. > I've tried deleting and attaching the qdisc+class (without explicit > large mtu) with both tso on (ethtool -K eth0 tso on) and tso off , it > doesnt seem to matter - giants appear in both cases. > With large mtu for the class no giants with both tso on and off. > > Yanko > > I think you need to ask fedora or intel driver maintainer about this. AIUI tso is not in vanilla kernels and the patches are quite invasive. Andy. _______________________________________________ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc