Date: Fri, 11 Jul 2014 11:07:55 -0700 From: Navdeep Parhar <nparhar@gmail.com> To: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>, John Jasem <jjasen@gmail.com> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: tuning routing using cxgbe and T580-CR cards? Message-ID: <53C027FB.7060807@gmail.com> In-Reply-To: <01AABF44-4801-45B5-9509-1CA7BAA3CB30@lists.zabbadoz.net> References: <53C01EB5.6090701@gmail.com> <01AABF44-4801-45B5-9509-1CA7BAA3CB30@lists.zabbadoz.net>
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On 07/11/14 11:03, Bjoern A. Zeeb wrote: > On 11 Jul 2014, at 17:28 , John Jasem <jjasen@gmail.com> wrote: >=20 >> c) the defaults for the cxgbe driver appear to be 8 rx queues, and >> N tx queues, with N being the number of CPUs detected. For a system >> running multiple cards, routing or firewalling, does this make >> sense, or would balancing tx and rx be more ideal? And would >> reducing queues per card based on NUMBER-CPUS and NUM-CHELSIO-PORTS >> make sense at all? =85 g) Are there other settings I should be >> looking at, that may squeeze out a few more packets? >=20 > If you are primarily forwarding packets (you say =93routing=94 multiple= > times) the first thing you should do is turn off LRO and TSO on all > ports. LRO, sure. But TSO shouldn't really matter unless the packets originate from a local TCP endpoint on the system. Navdeep >=20 > =97 Bjoern A. Zeeb "Come on. Learn, goddamn it.", WarGames,= > 1983 >=20
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