From owner-freebsd-hackers Thu Nov 29 18:24: 1 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from fasterix.frmug.org (s196.dhcp212-198-75.noos.fr [212.198.75.196]) by hub.freebsd.org (Postfix) with ESMTP id 2E00037B417 for ; Thu, 29 Nov 2001 18:23:58 -0800 (PST) Received: (from pb@localhost) by fasterix.frmug.org (8.11.6/8.11.5/pb-20010814) id fAU2NjM23824; Fri, 30 Nov 2001 03:23:45 +0100 (CET) (envelope-from pb) Message-ID: <20011130032345.A23415@fasterix.frmug.org> Date: Fri, 30 Nov 2001 03:23:45 +0100 From: Pierre Beyssac To: Leo Bicknell Cc: Josh Paetzel , jc@irbs.com, freebsd-hackers@FreeBSD.ORG Subject: Re: FreeBSD performing worse than Linux? References: <20011128153817.T61580@monorchid.lemis.com> <15364.38174.938500.946169@caddis.yogotech.com> <20011129004234.A16101@exuma.irbs.com> <20011130010354.A21307@fasterix.frmug.org> <20011129184414.F522@twincat.vladsempire.net> <20011130022547.A21889@fasterix.frmug.org> <20011129204225.A63957@ussenterprise.ufp.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.92.8i In-Reply-To: <20011129204225.A63957@ussenterprise.ufp.org>; from Leo Bicknell on Thu, Nov 29, 2001 at 08:42:25PM -0500 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, Nov 29, 2001 at 08:42:25PM -0500, Leo Bicknell wrote: > *grumble* I'll try to avoid my tirade. 16K _will cause problems for > virtually all users_. You can do the math and see it won't keep a T1 > full across country. I can't reproduce this result, 16K fills a T1 for 11 ms, which is 22000 km (at 2/3 of light speed), enough to get halfway round the earth... > This default _really_ needs to be moved to 32k, with an increase in I'm not sure it is necessary. Remember that you can always use SO_RCVBUF/SO_SNDBUF to get bigger buffer sizes, bulk transfer tools can always set it explicitly to 64K if they like. For interactive tools like telnet or ssh, increasing the default size is not really useful. Interestingly enough, ftpd does set SO_SNDBUF, but from a quick glance at the code ftp doesn't seem to set SO_RCVBUF, and neither does fetch. Pierre To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message