From mboxrd@z Thu Jan 1 00:00:00 1970 From: folkert Subject: Re: FAQ on linux-kvm.org has broken link Date: Mon, 26 Aug 2013 21:50:38 +0200 Message-ID: <20130826195037.GA18231@belle.intranet.vanheusden.com> References: <20130730011852.GC27878@belle.intranet.vanheusden.com> <20130730122546.GA7239@stefanha-thinkpad.redhat.com> <20130730204514.GA9179@belle.intranet.vanheusden.com> <20130731084624.GA20915@stefanha-thinkpad.muc.redhat.com> <20130802113753.GA8801@belle.intranet.vanheusden.com> <20130802180657.GB8801@belle.intranet.vanheusden.com> <20130805113154.GD14592@stefanha-thinkpad.muc.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: kvm To: Stefan Hajnoczi Return-path: Received: from keetweej.vanheusden.com ([80.101.105.103]:55201 "EHLO keetweej.vanheusden.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752113Ab3HZTum (ORCPT ); Mon, 26 Aug 2013 15:50:42 -0400 Content-Disposition: inline In-Reply-To: <20130805113154.GD14592@stefanha-thinkpad.muc.redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Hi, > 1. Try the latest vanilla kernel on the host (Linux 3.10.5). This way > you can rule out fixed bugs in vhost_net or tap. For the last two weeks it went fine for a couple of days each time. This evening was really bad again: uptimes of 5-10 minutes. This is with 3.11-rc4. > 2. Get the system into the bad state and then do some deeper. Start > with outgoing ping, instrument guest driver and host vhost_net > functions to see what the drivers are doing, inspect the transmit > vring, etc. > > #1 is probably the best next step. If it fails and you still have time Yup, very much. > to work on a solution we can start digging deeper with #2. I had a small script running with showed the amount of traffic coming and going out each second. I did not see any increase or decrease in the amount, only that when the problem happens RX stays but TX goes to 0. Folkert van Heusden -- MultiTail na wan makriki wrokosani fu tan luku den logfile nanga san den commando spiti puru. Piki puru spesrutu sani, wroko nanga difrenti kroru, tya kon makandra, nanga wan lo moro. http://www.vanheusden.com/multitail/ ---------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com