From owner-freebsd-net Tue Jun 4 20:19:14 2002 Delivered-To: freebsd-net@freebsd.org Received: from patrocles.silby.com (d51.as14.nwbl0.wi.voyager.net [169.207.134.51]) by hub.freebsd.org (Postfix) with ESMTP id 67DD937B400 for ; Tue, 4 Jun 2002 20:19:10 -0700 (PDT) Received: from patrocles.silby.com (localhost [127.0.0.1]) by patrocles.silby.com (8.12.3/8.12.3) with ESMTP id g553KoOA045238; Tue, 4 Jun 2002 22:20:50 -0500 (CDT) (envelope-from silby@silby.com) Received: from localhost (silby@localhost) by patrocles.silby.com (8.12.3/8.12.3/Submit) with ESMTP id g553Kmjn045235; Tue, 4 Jun 2002 22:20:49 -0500 (CDT) X-Authentication-Warning: patrocles.silby.com: silby owned process doing -bs Date: Tue, 4 Jun 2002 22:20:48 -0500 (CDT) From: Mike Silbersack To: Nguyen-Tuong Long Le Cc: freebsd-net@FreeBSD.ORG Subject: Re: Problem with SYN cache in FreeBSD 4.5 In-Reply-To: Message-ID: <20020604221848.J42854-100000@patrocles.silby.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Tue, 4 Jun 2002, Nguyen-Tuong Long Le wrote: > Here is the output of "netstat -La" > > Current listen queue sizes (qlen/incqlen/maxqlen) > Proto Listen Local Address > tcp4 3/0/8192 *.6789 > > > I wonder why the listen queue overflows when there are so few > connections in the queue. The number of listen queue overflows > is equal to the number of syncache aborts. Is it a coincidence > or are they related? > > Thanks, > -- long It appears that the primary reason a syncache abort would occur is because the system has run out of sockets. Is kern.ipc.numopensockets approaching kern.ipc.maxsockets? Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message