From owner-freebsd-net Mon Oct 15 21:15:18 2001 Delivered-To: freebsd-net@freebsd.org Received: from InterJet.dellroad.org (adsl-63-194-81-26.dsl.snfc21.pacbell.net [63.194.81.26]) by hub.freebsd.org (Postfix) with ESMTP id CB50637B40B for ; Mon, 15 Oct 2001 21:15:13 -0700 (PDT) Received: from arch20m.dellroad.org (arch20m.dellroad.org [10.1.1.20]) by InterJet.dellroad.org (8.9.1a/8.9.1) with ESMTP id VAA49671; Mon, 15 Oct 2001 21:02:59 -0700 (PDT) Received: (from archie@localhost) by arch20m.dellroad.org (8.11.3/8.11.3) id f9G42v634057; Mon, 15 Oct 2001 21:02:57 -0700 (PDT) (envelope-from archie) From: Archie Cobbs Message-Id: <200110160402.f9G42v634057@arch20m.dellroad.org> Subject: Re: strange results with increased net.inet.ip.intr_queue_maxlen (solved) In-Reply-To: <5.1.0.14.0.20011015234704.02bd7980@192.168.0.12> "from Mike Tancsa at Oct 15, 2001 11:52:32 pm" To: Mike Tancsa Date: Mon, 15 Oct 2001 21:02:57 -0700 (PDT) Cc: freebsd-net@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL82 (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit 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 Mike Tancsa writes: > At 08:44 PM 10/15/2001 -0700, Archie Cobbs wrote: > >This makes sense.. and that's is exactly what queues are for: > >absorbing bursts. If you have big bursts then you'll need big > >queues.. in general this is the only reason to have them. > > The only mystery I didnt solve in the end was what was generating the > bursts. The only commonality is that > > The machines in question are all running bgpd and zebra with a full view in > the kernel. > > The bursts would happen once every 10min. But I am not aware of any timers > that would run at that long an interval. I think I will ask over on the > zebra list to see if this interval rings a bell with anyone. Could possibly be ARP related, if something is caching packets while an ARP entry is being resolved. For a semi-related issue, see PR #25517: http://www.freebsd.org/cgi/query-pr.cgi?pr=25517 -Archie __________________________________________________________________________ Archie Cobbs * Packet Design * http://www.packetdesign.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message