From owner-freebsd-net@FreeBSD.ORG Wed Aug 11 17:11:43 2010 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E70DC106564A for ; Wed, 11 Aug 2010 17:11:43 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: from mail-qw0-f54.google.com (mail-qw0-f54.google.com [209.85.216.54]) by mx1.freebsd.org (Postfix) with ESMTP id 8FF998FC15 for ; Wed, 11 Aug 2010 17:11:43 +0000 (UTC) Received: by qwg5 with SMTP id 5so410828qwg.13 for ; Wed, 11 Aug 2010 10:11:42 -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=varEqishdtQv8k6PsAUVMUNJ9qgjyf3OGw2cSi6RjcM=; b=mQ1GSZID6PR/XLZrl2G5lz/StScBCX0S8ycUXrlG2wiTt0HB3r1E5sM9jHFnWwk/Nk CjDdXuXTk4PS4wQB/zbmJYhDBuu3RGKk/ydz94rtZIisxAzyykq0nd7uNZNtOlepZUPT p9K7JEC2NTacJYlk+98M2Bph9VATazGn7P/3Q= 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=Bnsl1hLWwE9/LDz32XUWuDH1jzjpy4ul3BlpRG+AkQOj90OE5nxQF2iiJYOtxgdsu5 0zCT02aY1xuWMUOOkC9TsF+TKMsbhhe01v/M3+4lPUows/DlMs4FcGY2HPR+ii85KHEm ZhfBDt55sxIuE5IC4vJwVcZsvuWBI2FYAldT8= Received: by 10.229.131.96 with SMTP id w32mr9788706qcs.199.1281546702425; Wed, 11 Aug 2010 10:11:42 -0700 (PDT) Received: from pyunyh@gmail.com ([174.35.1.224]) by mx.google.com with ESMTPS id l8sm420088qck.6.2010.08.11.10.11.39 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 11 Aug 2010 10:11:41 -0700 (PDT) Received: by pyunyh@gmail.com (sSMTP sendmail emulation); Wed, 11 Aug 2010 10:11:38 -0700 From: Pyun YongHyeon Date: Wed, 11 Aug 2010 10:11:38 -0700 To: Jack Vogel Message-ID: <20100811171138.GC15858@michelle.cdnetworks.com> References: <20100810213754.GH6960@michelle.cdnetworks.com> <20100811164318.GB15858@michelle.cdnetworks.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i Cc: freebsd-net@freebsd.org, Victor Ophof Subject: Re: "RX ring hdr initialization error" X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: pyunyh@gmail.com List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Aug 2010 17:11:44 -0000 On Wed, Aug 11, 2010 at 10:05:20AM -0700, Jack Vogel wrote: > Why would you set the ring size so large? On a home system you should be > fine with 1024 or even 512. > > If you have a panic on boot reconfigure the kernel so em is not static, then > load > it as a module after boot and tune it that way, once you have it tweaked you > can > make it static again if you wish. > He used default TX/RX ring size. > Jack > > > On Wed, Aug 11, 2010 at 9:43 AM, Pyun YongHyeon wrote: > > > On Wed, Aug 11, 2010 at 10:19:11AM +0200, Victor Ophof wrote: > > > > > > > > > > > > From: pyunyh@gmail.com > > > Date: Tue, 10 Aug 2010 14:37:54 -0700 > > > To: mr4hughz@hotmail.com > > > CC: jfv@freebsd.org; freebsd-net@freebsd.org > > > Subject: Re: "RX ring hdr initialization error" > > > > > > On Tue, Aug 10, 2010 at 12:52:56PM +0200, Victor Ophof wrote: > > > > > > > > > > > > > > > > > > > > Hi > > > > > > > > I've bought a asus M4a78-EM Motherboard. to build a NAS on, > > > > thinking the onboard Realtek would be sufficant speed > > > > unfortunatly the onboard fives 16/31 mbs at best > > > > > > > > ps later It improved with enabeling "polling" in the kernel (duh) > > > > > > > > so I had a PCI intel GT nic around, what gave intermittent tcp/ip > > connections in a other machine (ESXi) > > > > unfortunatly this was the same with Freebsd (card issue?) The card is > > still in the machine > > > > even with the Intel supplied BSD driver > > > > > > > > now I bought a PCIe intel CT nic, put it in and the kernel panic with > > > > "RX ring hdr initialization error" > > > > so replaced the intel with the freebsd one by doing > > > > intel overwrites the freebsd one /boot/kernel/if_em.ko > > > > # cd /usr/src/sys/modules/em/ && make obj depend all install > > > > (was already in the kernel) > > > > > > > > > > > > still panic > > > > anybody got some idea's howto fix ? > > > > > > > --- reaction pyunyh --- > > > I have been using the attached patch for em(4)/igb(4) controllers. > > > These drivers explicitly calls panic(9) when memory allocation > > > failure happens. I don't think it's good idea to panic the box > > > under resource shortage condition as it's common to see this > > > situation on heavily loaded servers. > > > > > > The patch does not solve the one issue yet. The panic caused by > > > RX buffer allocation failure condition which in turn means you're > > > allocating a lot of buffers. Reduce number of descriptors if you > > > increased that too high and see whether the issue could be gone. > > > ---/reaction pyunyh ---What buffers /descriptors I need to reduce? I have > > 2gb ram and set the following in /boot/loader.conf vm.kmem_size_max="1024m" > > > > The loader tunables are hw.em.txd and hw.em.rxd. I thought you > > increased TX/RX descriptor size to large value(e.g. 4096). > > > > > vm.kmem_size="1024m" > > > #vfs.zfs.prefetch_disable=1 > > > vm.kmem_size="2048M" > > > vfs.zfs.arc_min="1024M" > > > vfs.zfs.arc_max="1536M" > > > vfs.zfs.vdev.min_pending=2 > > > vfs.zfs.vdev.max_pending=8 > > > vfs.zfs.txg.timeout=5 > > > aio_load="YES" > > > ahci_load="YES" > > > > > > > I guess zfs consumed a lot of memory such that em(4) was not able > > to allocate RX buffers. It seems there is nothing can be done in > > this case unless some memory is reclaimed from zfs. I'm not > > familiar with zfs internals but others can comment on this. > > > > However the patch should fix the panic under these resource > > shortage situation. > > _______________________________________________ > > freebsd-net@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-net > > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > >