From owner-freebsd-bugs Mon Aug 12 11:50: 6 2002 Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0C98937B400 for ; Mon, 12 Aug 2002 11:50:03 -0700 (PDT) Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id ABD9843E65 for ; Mon, 12 Aug 2002 11:50:02 -0700 (PDT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.12.4/8.12.4) with ESMTP id g7CIo2JU082058 for ; Mon, 12 Aug 2002 11:50:02 -0700 (PDT) (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.12.4/8.12.4/Submit) id g7CIo2X1082057; Mon, 12 Aug 2002 11:50:02 -0700 (PDT) Date: Mon, 12 Aug 2002 11:50:02 -0700 (PDT) Message-Id: <200208121850.g7CIo2X1082057@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org Cc: From: Garrett Wollman Subject: kern/41552: TCP timers' sysctl's overflow Reply-To: Garrett Wollman 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/41552; it has been noted by GNATS. From: Garrett Wollman To: "G.P. de Boer" Cc: freebsd-gnats-submit@FreeBSD.ORG Subject: kern/41552: TCP timers' sysctl's overflow Date: Mon, 12 Aug 2002 14:40:57 -0400 (EDT) < said: > When setting syscontrols like net.inet.tcp.keepidle on a system with > clocktick-granularity above 1000 Hz, there's an overflow triggered, > resulting in at least inaccurate, but sometimes negative TCP > timeouts. 1 kHz timers are just barely within spec for TCP (using the 32-bit fields in RFC 1323). -GAWollman To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message