From owner-freebsd-hackers@FreeBSD.ORG Sat Mar 28 23:05:36 2015 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5382D77D; Sat, 28 Mar 2015 23:05:36 +0000 (UTC) Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 05419843; Sat, 28 Mar 2015 23:05:36 +0000 (UTC) Received: from slw by zxy.spb.ru with local (Exim 4.84 (FreeBSD)) (envelope-from ) id 1YbznJ-0003np-T0; Sun, 29 Mar 2015 02:05:33 +0300 Date: Sun, 29 Mar 2015 02:05:33 +0300 From: Slawa Olhovchenkov To: Adrian Chadd Subject: Re: irq cpu binding Message-ID: <20150328230533.GI23643@zxy.spb.ru> References: <20150328192505.GD23643@zxy.spb.ru> <20150328194959.GE23643@zxy.spb.ru> <20150328201219.GF23643@zxy.spb.ru> <20150328221621.GG23643@zxy.spb.ru> <20150328224634.GH23643@zxy.spb.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: slw@zxy.spb.ru X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false Cc: "freebsd-hackers@freebsd.org" X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 28 Mar 2015 23:05:36 -0000 On Sat, Mar 28, 2015 at 03:49:48PM -0700, Adrian Chadd wrote: > You should totally join #bsdcode on efnet and ask me about it. :) I am totaly don't use IRC (last 20 years). May be skype? > on RSS, this is what would happen: > > * ALL NICs RSS BUCKET 0 -> core 0 > * ... > * ALL NICs RSS BUCKET 7 -> core 7 My expirens: this is worse vs dedicated core (one core handeled only one bucket of one NIC). > Now, that's not really 100% optimal for NUMA and multiple PCIe > controllers, but we're not there yet. > > Hopefully I can twist/cajole navdeep @ chelsio to continue doing a > little more RSS work so I can teach cxgbe/cxl about RSS configuration, > but ixgbe, igb and ixl all do the above when RSS is enabled. Most part of my setup use cxgbe.