From mboxrd@z Thu Jan 1 00:00:00 1970 From: Charles Duffy Subject: kvm-72 rhel4 (2.6.9-derived) i386 guest - rtl8139 stalling; lost interrupts? Date: Fri, 01 Aug 2008 11:36:22 -0500 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from main.gmane.org ([80.91.229.2]:52545 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751516AbYHAQgm (ORCPT ); Fri, 1 Aug 2008 12:36:42 -0400 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1KOxcL-00077z-4Q for kvm@vger.kernel.org; Fri, 01 Aug 2008 16:36:37 +0000 Received: from rrcs-71-41-149-67.sw.biz.rr.com ([71.41.149.67]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 01 Aug 2008 16:36:37 +0000 Received: from Charles_Duffy by rrcs-71-41-149-67.sw.biz.rr.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 01 Aug 2008 16:36:37 +0000 Sender: kvm-owner@vger.kernel.org List-ID: I have observed downloads to stall on an RHEL4 i386 guest (on an x86_64 host), such that creating additional network traffic (ie. pinging the virtual host in question) will "unstick" the download. This does not happen to a RHEL5 x86_64 guest on the same host, and is quite reliably reproducible while kickstarting a new virtual machine across a network (bridged, with a different VM hosting the packages being downloaded). To me, this smells like lost interrupts; is there anything I can do to better diagnose the issue?