Date: Mon, 05 Oct 1998 07:12:26 -0700 From: David Greenman <dg@root.com> To: "Morgan Davis" <mdavis@cts.com> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: KERNEL PANICS in 2.2.7-RELEASE server Message-ID: <199810051412.HAA11410@implode.root.com> In-Reply-To: Your message of "Sun, 04 Oct 1998 17:52:16 PDT." <NCBBLNPFBLAJJOFDILMLGEKACAAA.mdavis@cts.com>
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>Below is a dump of the kernel symbols around that address per your request. >Look like the offending function is _sosend. Yes, that's exactly what I'd expect in the case of running out of mbuf clusters. Try doing a options "NMBCLUSTERS=10000" ...that should fix the problem. >You may be right about mbuf clusters, as the kernel is simply GENERIC with >all the non-essentials commented out. What kernel tweaks would you >recommend to accomodate a high-bandwidth packet-passing system? It's an >audio server that simply forwards encoded audio streams to potentially >thousands of UDP and TCP client connections. It doesn't host users or do >much else. > >I wonder if the tweaks we've used for some of our BSDI news servers would >work. They use: > >maxusers 512 >options "CHILD_MAX=512" >options "OPEN_MAX=1024" >options "NMBCLUSTERS=16384" >options "TCBHASHSIZE=2048" >options AHC_TAGENABLE Those numbers might be a bit high (especially maxusers) without moving the kernel virtual start address down another 256MB (i.e. you may run out of kernel VM). -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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