From owner-freebsd-stable@FreeBSD.ORG Mon Mar 29 10:58:05 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E1C19106566C for ; Mon, 29 Mar 2010 10:58:05 +0000 (UTC) (envelope-from bra@fsn.hu) Received: from people.fsn.hu (people.fsn.hu [195.228.252.137]) by mx1.freebsd.org (Postfix) with ESMTP id 902678FC0A for ; Mon, 29 Mar 2010 10:58:04 +0000 (UTC) Received: by people.fsn.hu (Postfix, from userid 1001) id 28E6724562B; Mon, 29 Mar 2010 12:58:03 +0200 (CEST) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MF-ACE0E1EA [pR: 3.5436] X-CRM114-CacheID: sfid-20100329_12580_9FAA87A5 X-CRM114-Status: UNSURE (3.5436) This message is 'unsure'; please train it! Message-ID: <4BB087B7.3030602@fsn.hu> Date: Mon, 29 Mar 2010 12:57:59 +0200 From: Attila Nagy User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.23) Gecko/20090817 Thunderbird/2.0.0.23 Mnenhy/0.7.6.0 MIME-Version: 1.0 To: Michael Loftis References: <4BAB718C.3090001@fsn.hu> <886B21E1787F0003B89E34B6@[192.168.1.44]> In-Reply-To: <886B21E1787F0003B89E34B6@[192.168.1.44]> X-Stationery: 0.4.10 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.094166, version=1.2.1 X-Spambayes-Classification: ham; 0.00 X-DSPAM-Result: Innocent X-DSPAM-Processed: Mon Mar 29 12:58:03 2010 X-DSPAM-Confidence: 0.7601 X-DSPAM-Probability: 0.0000 X-DSPAM-Signature: 4bb087bb48929048718729 X-DSPAM-Factors: 27, X-Bogosity*Ham+tests=bogofilter, 0.00344, X-Bogosity*Ham, 0.00344, X-Spambayes-Classification*ham+0.00, 0.00399, X-Spambayes-Classification*0.00, 0.00399, X-Spambayes-Classification*ham, 0.00610, >, 0.00613, >, 0.00613, wrote, 0.00883, wrote, 0.00883, >+>, 0.00889, >+>, 0.00889, From*fsn.hu>, 0.99056, Return-Path*fsn.hu>, 0.99056, To*Michael, 0.01000, lock, 0.01000, I+guess, 0.01000, requests, 0.01000, solved, 0.01000, python, 0.01000, X-Stationery*0.4.10, 0.01000, guess, 0.01000, themselves, 0.01000, and+it, 0.01000, hardware, 0.01000, hardware, 0.01000, Message-ID*fsn.hu>, 0.01000, User-Agent*Mozilla/5.0+(X11, 0.01000 Cc: Mailing List FreeBSD Stable Subject: Re: 8-STABLE freezes on UDP traffic (DNS), 7.x doesn't X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Mar 2010 10:58:06 -0000 Hi, Michael Loftis wrote: > > > --On Thursday, March 25, 2010 3:22 PM +0100 Attila Nagy > wrote: > > <...> >> Both unbound and python accepts DNS requests, and it seems when 25% >> interrupt happens, only unbound is in *udp state, where it is 50%, both >> programs are in that state. > > Try turning of hardware TSO/checksum offload if it's availble on your > chipset? ifconfig -rxcsum -txcsum -tso -- I'm only using > nfe chips right now, but w/ the TSO/CSUM on they lock up constantly > under high load. We're pretty sure it's mostly the nfe driver, or the > chips themselves, but have never ruled out some generic 8.x hardware > offload issues. Bingo, this solved the problem. The current uptime nears four days. Previously I couldn't go further than a day. The machine gets very light TCP load (and other machines which get work well), so I guess it's UDP RX or TX checksum related.