From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ralph Passgang Subject: Re: frontend not being notified about packets received? Date: Sat, 29 Dec 2007 16:25:03 +0100 Message-ID: <200712291625.03218.ralph@debianbase.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Am Samstag, 29. Dezember 2007 12:56:13 schrieb James Harper: > I'm working on the windows xen pv drivers in Andy's absence, and am > noticing a strange behaviour... I'm not getting a notification of > packets received until there are lots of them, then I get them all at > once, but up to a minute or so later if there isn't much activity. > > I have tinkered with setting "feature-rx-notify" to zero and one, and > omitting it altogether, but it doesn't appear to change anything. > > Any hints would be greatly appreciated. I'm using the latest Debian > 2.6.18 packages from Etch, and Xen 3.1.1. Just a hint: The debian 2.6.18-5-xen packages are made with patches from xen 3.0 and not with a more recent 3.1 patch. I am not familiar enough with the xen internals to say if this could be the problem, but maybe you should compile 2.6.18 with a more recent xen patch to see if the problem still exists then. btw.: I tried your xen pv drivers (v0.5) on win xp 32bit. They are working very well. They are not really faster, but at least they reduce the load in dom0 a lot on heavy IO in the hvm guest. So after optimising them for speed, they really could be usefull for all win hvm setups. Some things I noticed: you need a hvm domain with apic/acpi enabled (haven't checked which one is really required), because without apic/acpi the pv drivers will generate a blue screen at boot time. So keep the good work up! I really like to see open source pv drivers for windows! Let me know if it helps you to see some benchmarks on the harddisk performance. --Ralph > Thanks > > James > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel