From owner-freebsd-stable@FreeBSD.ORG Thu Mar 25 18:53:26 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 E07CD106566C for ; Thu, 25 Mar 2010 18:53:26 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: from mail-bw0-f216.google.com (mail-bw0-f216.google.com [209.85.218.216]) by mx1.freebsd.org (Postfix) with ESMTP id 696838FC16 for ; Thu, 25 Mar 2010 18:53:26 +0000 (UTC) Received: by bwz8 with SMTP id 8so2360995bwz.3 for ; Thu, 25 Mar 2010 11:53:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:received:from:date:to:cc :subject:message-id:reply-to:references:mime-version:content-type :content-disposition:in-reply-to:user-agent; bh=3avqiYpUseEg4n7Hqsov6nHK6pRCyAL0t+abjBTgPWM=; b=njpZdI0xNrUAs9NC4IHGHNtgZmhWz3lVfzuVdAM6Qo15UaaHiAMj7Xz6+Hge3YaIuS EmXPvGh4Zn6tvnlo+FcoiSiOJ6oqp9JgCDUNZSaEFomxioc9o74VLXg9AMsqunY5UbyM xlT9rZn1hln3xr946Zs2rmZsiMCEtDpyTLhgM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:date:to:cc:subject:message-id:reply-to:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=L2jwxgVlBGnbz1BEU/0kyJ7E758CMVnVZmUDIfLlfLnYPM5Y+BNmbyZa6gNl9t8fzj 2QdOFwmkXsWnsx3CeLMbwBajf3KXnkYZrdCoZeG88mVZ0ownVf22tdakBkdAIys702iS a1JIFDMInaAaI7XnCyKsLnmWAlSIzBMSKgoic= Received: by 10.204.132.131 with SMTP id b3mr47730bkt.135.1269543205233; Thu, 25 Mar 2010 11:53:25 -0700 (PDT) Received: from pyunyh@gmail.com ([174.35.1.224]) by mx.google.com with ESMTPS id 14sm51311bwz.10.2010.03.25.11.53.22 (version=TLSv1/SSLv3 cipher=RC4-MD5); Thu, 25 Mar 2010 11:53:23 -0700 (PDT) Received: by pyunyh@gmail.com (sSMTP sendmail emulation); Thu, 25 Mar 2010 11:52:58 -0700 From: Pyun YongHyeon Date: Thu, 25 Mar 2010 11:52:58 -0700 To: Michael Loftis Message-ID: <20100325185258.GF1278@michelle.cdnetworks.com> References: <4BAB718C.3090001@fsn.hu> <886B21E1787F0003B89E34B6@[192.168.1.44]> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <886B21E1787F0003B89E34B6@[192.168.1.44]> User-Agent: Mutt/1.4.2.3i 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 Reply-To: pyunyh@gmail.com List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Mar 2010 18:53:27 -0000 On Thu, Mar 25, 2010 at 09:39:40AM -0600, 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 If you have nfe(4) issues please file PR for that. I'm not aware of TSO, Tx checksum offloading related issue of nfe(4). Due to lack of documentation for the controller it might be hard to analyze the issue but it may help other users who are suffering from the same issue. > themselves, but have never ruled out some generic 8.x hardware offload > issues.