From owner-freebsd-arch@FreeBSD.ORG Fri Aug 19 09:22:54 2011 Return-Path: Delivered-To: freebsd-arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 703F4106566B; Fri, 19 Aug 2011 09:22:54 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98]) by mx1.freebsd.org (Postfix) with ESMTP id C477E8FC0A; Fri, 19 Aug 2011 09:22:53 +0000 (UTC) Received: from slw by zxy.spb.ru with local (Exim 4.69 (FreeBSD)) (envelope-from ) id 1QuLI8-000P4o-IC; Fri, 19 Aug 2011 13:23:04 +0400 Date: Fri, 19 Aug 2011 13:23:04 +0400 From: Slawa Olhovchenkov To: Robert Watson Message-ID: <20110819092304.GB92576@zxy.spb.ru> References: <810527321.20110819123700@serebryakov.spb.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=koi8-r Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) 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: Vadim Goncharov , Lev Serebryakov , freebsd-arch@freebsd.org Subject: Re: FreeBSD problems and preliminary ways to solve X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Aug 2011 09:22:54 -0000 On Fri, Aug 19, 2011 at 09:41:41AM +0100, Robert Watson wrote: > There are a few known issues in terms of parallelism -- one is contention > between the ithread and user thread on per-TCP connection locks. Another is > that we still haven't managed to switch to per-CPU statistics for the network > stack (which is fairly straight forward in a specific sense, but we'd like a > proper abstraction for it so we can generalise). After discussion in other place: may be perfomace improve if application resheduling on the same core, as processing incoming IP packet (hot CPU caÓhe)? -- Slawa Olhovchenkov