Date: Wed, 3 Dec 2014 17:21:44 +0100 From: Patrick Proniewski <patpro@patpro.net> To: Borja Marcos <borjam@sarenet.es> Cc: freebsd-net@freebsd.org, Steven Hartland <killing@multiplay.co.uk> Subject: Re: Horrendous upload network performance with VLAN (download seems OK) Message-ID: <E3234CED-CEB4-48AF-B3F9-1492AFF4DB46@patpro.net> In-Reply-To: <DC8D5BD7-8743-4AB9-952B-54822723610D@sarenet.es> References: <727AB395-CF83-4D13-A2C3-50969C2969B0@patpro.net> <547F3352.3040101@multiplay.co.uk> <43C2162E-2B9F-437F-B4CF-E792CEC5DA7B@patpro.net> <DC8D5BD7-8743-4AB9-952B-54822723610D@sarenet.es>
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On 3 d=E9c. 2014, at 17:09, Borja Marcos <borjam@sarenet.es> wrote: > On Dec 3, 2014, at 5:05 PM, Patrick Proniewski wrote: >=20 >> I did and it failed, but maybe I've not used the right syntax: >>=20 >> # ifconfig bxe0 -vlanmtu >> ifconfig: -vlanmtu: Invalid argument >>=20 >> man bxe makes me think that this driver won't allow this kind of = changes. >=20 > Although there's no guarantee it will solve your issues, try disabling = LRO and TSO. I've found situations in which they do more harm than good, = depending on the particular card and driver. >=20 > Anyway it's a cheap experiment :) Sure.=20 Same result unfortunately. I've made few tcpdump experiments during my scp upload tests. One on = bxe0 that shows a lot of packets for the LLC protocol, and one on = bxe0.161 that shows many "suspected TCP retransmissions", and very few = LLC packet (6 in about 350 packets of this capture). Patrick=
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