From owner-freebsd-stable@FreeBSD.ORG Mon Feb 6 18:47:58 2012 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 4614C106566B; Mon, 6 Feb 2012 18:47:58 +0000 (UTC) (envelope-from dudu@dudu.ro) Received: from mail-iy0-f182.google.com (mail-iy0-f182.google.com [209.85.210.182]) by mx1.freebsd.org (Postfix) with ESMTP id E18328FC16; Mon, 6 Feb 2012 18:47:56 +0000 (UTC) Received: by iaeo4 with SMTP id o4so13313778iae.13 for ; Mon, 06 Feb 2012 10:47:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dudu.ro; s=google; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=tSSOsBtWYcU219aHPr+R+oO4pO4djJErW/3pMDCAbC8=; b=T1ypp7wRhUde4nBQ+TsZmTpRLV+TzWXLeKndyegMH5BbVTYyMnTY/jeYDTcNQ1Gqle G4VX1xuzwjrjidaWd6WhzLKe/bbiPj+AG/mEjwyriPqgy+AuDlsw6gbM67HCtfuoa0pr gNJnA5kOC7iU22tbSxUPsEOf0JZHEDJW+ywao= Received: by 10.50.89.232 with SMTP id br8mr11524574igb.30.1328552241201; Mon, 06 Feb 2012 10:17:21 -0800 (PST) MIME-Version: 1.0 Received: by 10.42.243.4 with HTTP; Mon, 6 Feb 2012 10:16:40 -0800 (PST) In-Reply-To: References: <2740DA0E7C0F495BA00E6D4BC0FE8F37@multiplay.co.uk> <040F9FF759DA441392432EDBD5C4D2CF@multiplay.co.uk> <4EB29A84.6070104@FreeBSD.org> From: Vlad Galu Date: Mon, 6 Feb 2012 18:16:40 +0000 Message-ID: To: "Li, Qing" X-Gm-Message-State: ALoCoQk6aWqOO6scbGMD9wqYvF7YYcMD+ubKLVzvVFjXkXa5dooeD3qwzwJh7gd9ZI9yNJmyMckr Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Steven Hartland , "liv3d@multiplay.co.uk" , "Alexander V. Chernikov" , "freebsd-stable@FreeBSD.org" , "qingli@freebsd.org" Subject: Re: serious packet routing issue causing ntpd high load? 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, 06 Feb 2012 18:47:58 -0000 Hi Qing, Any luck with this? Thanks Vlad On Thu, Nov 3, 2011 at 2:05 PM, Li, Qing wrote: > This endless route lookup miss message problem is reproducible without > FLOWTABLE. > The problem is with the multiple FIBs. I cannot reproduce this problem in > my home network > but the problem is easily seen at work. > > The route lookup miss itself in multi-FIBs configuration may be normal > depending on > the actual system configuration. It's the flooding of RTM_MISS messages > that is abnormal. > For example, if the route to the DNS servers is not configured in all > FIBs, then the RTM_MISS > message will be generated when an userland application sends to an > explicit IP address > in a specific FIB. > > In any case, I can reproduce the issue consistently and just trying to get > a few uninterrupted > hours to get it done. > > --Qing > > ________________________________________ > From: Alexander V. Chernikov [melifaro@FreeBSD.org] > Sent: Thursday, November 03, 2011 6:43 AM > To: Steven Hartland > Cc: Li, Qing; freebsd-stable@FreeBSD.org; liv3d@multiplay.co.uk > Subject: Re: serious packet routing issue causing ntpd high load? > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 10.10.2011 13:50, Steven Hartland wrote: > > ----- Original Message ----- From: "Li, Qing" > > > >>> RTM_MISS: Lookup failed on this address: len 184, pid: 0, seq 0, errno > >>> 0, flags: > >>> locks: inits: > >>> sockaddrs: > >>> ::A.B.C.D > >>> > I'm unable to reproduce an issue on (nearly) GENERIC 8-S, but I see > nearly the same situation on 8.1-S box with FLOWTABLE enabled. > > Do you have FLOWTABLE option in your kernel config ? > >> > >> Would it be possible for you to email me what exactly does "::A.B.C.D" > >> map into WRT your system or infrastructure ? > > > > Sorry for the slow reply been out of the country. > > > > All the hosts are local machines same /24 connecting to the server for > > mysql. It seems to be that every packet either to or from for the mysql > > server is generating an RTM_MISS. > > > >> And are you able to share your "ifconfig -a" and "netstat -rn" output > >> with me privately ? > > > > On its way. > > > > Regards > > Steve > > > > ================================================ > > This e.mail is private and confidential between Multiplay (UK) Ltd. and > > the person or entity to whom it is addressed. In the event of > > misdirection, the recipient is prohibited from using, copying, printing > > or otherwise disseminating it or any information contained in it. > > In the event of misdirection, illegible or incomplete transmission > > please telephone +44 845 868 1337 > > or return the E.mail to postmaster@multiplay.co.uk. > > > > _______________________________________________ > > freebsd-stable@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org > " > > > > > - -- > WBR, Alexander > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.18 (FreeBSD) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAk6ymoMACgkQwcJ4iSZ1q2meiACeKq4lhzw6scqCKzEyTNEeycxo > 31QAn2q5KIRBwJpcF7yOpTe3wOcP3Aak > =jfKN > -----END PGP SIGNATURE----- > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > -- Good, fast & cheap. Pick any two.