From owner-freebsd-bugs Tue Feb 12 13:10:58 2002 Delivered-To: freebsd-bugs@hub.freebsd.org Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21]) by hub.freebsd.org (Postfix) with ESMTP id 680CA37B437 for ; Tue, 12 Feb 2002 13:10:02 -0800 (PST) Received: (from gnats@localhost) by freefall.freebsd.org (8.11.6/8.11.6) id g1CLA2W12956; Tue, 12 Feb 2002 13:10:02 -0800 (PST) (envelope-from gnats) Date: Tue, 12 Feb 2002 13:10:02 -0800 (PST) Message-Id: <200202122110.g1CLA2W12956@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org Cc: From: AMAKAWA Shuhei Subject: Re: kern/34801: TCP window size bug (afflicting IP Filter Reply-To: AMAKAWA Shuhei Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org The following reply was made to PR kern/34801; it has been noted by GNATS. From: AMAKAWA Shuhei To: Andrew Gallatin Cc: freebsd-gnats-submit@FreeBSD.org Subject: Re: kern/34801: TCP window size bug (afflicting IP Filter Date: Tue, 12 Feb 2002 21:01:37 +0000 At Tue, 12 Feb 2002 13:36:51 -0500 (EST), Andrew Gallatin wrote: > I'd greatly prefer we keep the default tcp_recvspace a multiple of > MCLBYTES, or better yet, a multiple of PAGE_SIZE. > > So if its decided that reducing tcp_recvspace is the expediant fix > (rather than fixing ipfiler, which would be much better), set it to > 56k or 32k or something. Don't set it to 64k-1. Sounds fine to me. As a matter of fact, I use 32768. The question is what the folks who decided to make this change have to say. I don't know why the particular value of 64k was chosen. I'm interested to hear the reason behind Matt Dillon's reservation about going beyond 32k, noted in the CVS log (if he had such reservation at all). http://www.FreeBSD.org/cgi/cvsweb.cgi/src/sys/netinet/tcp_usrreq.c revision 1.64 -- Shuhei To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message