From owner-freebsd-questions Fri Jun 18 2:17:57 1999 Delivered-To: freebsd-questions@freebsd.org Received: from titan.metropolitan.at (mail.metropolitan.at [195.212.98.131]) by hub.freebsd.org (Postfix) with ESMTP id D1CC91500D for ; Fri, 18 Jun 1999 02:17:47 -0700 (PDT) (envelope-from mladavac@metropolitan.at) Received: by TITAN with Internet Mail Service (5.0.1458.49) id ; Fri, 18 Jun 1999 11:20:45 +0200 Message-ID: <55586E7391ACD211B9730000C1100276179685@r-lmh-wi-100.corpnet.at> From: Ladavac Marino To: "'Ronald F. Guilmette'" , Dan Nelson Cc: Greg Lehey , Thomas David Rivers , mistwolf@ethereal.net, questions@FreeBSD.ORG Subject: RE: A suggested kernel enhancement relating to kernel panics. Date: Fri, 18 Jun 1999 11:15:08 +0200 X-Priority: 3 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1458.49) Content-Type: text/plain Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > -----Original Message----- > From: Ronald F. Guilmette [SMTP:rfg@monkeys.com] > Sent: Friday, June 18, 1999 4:31 AM > To: Dan Nelson > Cc: Greg Lehey; Thomas David Rivers; mistwolf@ethereal.net; > questions@FreeBSD.ORG > Subject: Re: A suggested kernel enhancement relating to kernel > panics. > > > In message <19990617211655.A9746@dan.emsphone.com>, you wrote: > > A footnote: I made some modest changes to my heavy-load-inducing > application > program to prevent it from trying to initiate too many TCP connections > during any given wall-clock second, and now everything appears to be > running > peachy again. [ML] Are you sure you are not running out of mbufs? That will panic a machine. > I suspect that the earlier panics and/or spontaneous reboots I was > seeing > much have been due to _some_ very obscure kernel (or perhaps even CPU) > bug > that _only_ makes itself apparent under _very_ heavy interrupt loads. [ML] Or high network load--IIRC, you need mbufs for TCP fragment reassembly as well. Try netstat -m to find out the IP memory usage. /Marino To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message