From owner-freebsd-net@FreeBSD.ORG Wed Apr 29 14:03:51 2015 Return-Path: Delivered-To: freebsd-net@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 78B2E297; Wed, 29 Apr 2015 14:03:51 +0000 (UTC) Received: from hergotha.csail.mit.edu (wollman-1-pt.tunnel.tserv4.nyc4.ipv6.he.net [IPv6:2001:470:1f06:ccb::2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 36A5F139A; Wed, 29 Apr 2015 14:03:50 +0000 (UTC) Received: from hergotha.csail.mit.edu (localhost [127.0.0.1]) by hergotha.csail.mit.edu (8.14.9/8.14.9) with ESMTP id t3TE3htS052996; Wed, 29 Apr 2015 10:03:44 -0400 (EDT) (envelope-from wollman@hergotha.csail.mit.edu) Received: (from wollman@localhost) by hergotha.csail.mit.edu (8.14.9/8.14.4/Submit) id t3TE3h4U052993; Wed, 29 Apr 2015 10:03:43 -0400 (EDT) (envelope-from wollman) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <21824.58559.694680.131913@hergotha.csail.mit.edu> Date: Wed, 29 Apr 2015 10:03:43 -0400 From: Garrett Wollman To: Adrian Chadd Cc: FreeBSD Net Subject: Re: Frequent hickups on the networking layer In-Reply-To: References: <4281350517-9417@kerio.tuxis.nl> <137094161.27589033.1430255162390.JavaMail.root@uoguelph.ca> <21824.26416.855441.21454@hergotha.csail.mit.edu> X-Mailer: VM 7.17 under 21.4 (patch 22) "Instant Classic" XEmacs Lucid X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (hergotha.csail.mit.edu [127.0.0.1]); Wed, 29 Apr 2015 10:03:44 -0400 (EDT) X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED, HEADER_FROM_DIFFERENT_DOMAINS autolearn=disabled version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on hergotha.csail.mit.edu X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Apr 2015 14:03:51 -0000 < said: > - as you said, like ~ 64k), and allocate that way. That way there's no > fragmentation to worry about - everything's just using a custom slab > allocator for these large allocation sizes. > It's kind of tempting to suggest freebsd support such a thing, as I > can see increasing requirements for specialised applications that want > this. I think this would be an Extremely Good Thing if someone has the cycles to implement it, and teach some of the popular network interfaces to use it. -GAWollman