From mboxrd@z Thu Jan 1 00:00:00 1970 From: Georg Bege Subject: Re: Fwd: Re: Xen 4.3 / 4.4 - concurrent APIs, VGA Passthru Date: Mon, 04 Aug 2014 21:30:38 +0200 Message-ID: <53DFDF5E.9080809@ninth-art.de> References: <53D5C00E.5040706@ninth-art.de> " <53D659C3.9010500@ninth-art.de>" <53D665C7.6010004@bobich.net> <53D6F500.1010806@ninth-art.de> <53D748DC.10209@bobich.net> <53D74F9E.6010508@ninth-art.de> <53D78B0D.802@ninth-art.de> <53DCC238.3030707@ninth-art.de> <53DE0592.2040208@bobich.net> <53DE0A73.9040304@ninth-art.de> <53DF41E3.9000406@bobich.net> Reply-To: therion@ninth-art.de Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <53DF41E3.9000406@bobich.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Gordan Bobic Cc: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org Hi Am 04.08.2014 10:18, schrieb Gordan Bobic: > On 08/03/2014 11:09 AM, Georg Bege wrote: >> >> Am 03.08.2014 11:49, schrieb Gordan Bobic: >>> On 08/02/2014 11:49 AM, Georg Bege wrote: >>>> Hello again >>>> >>>> Well so far I can now tell, I tested it on WinXP x64 quite a lot >>>> - most things are working. >>>> Including AAA games like Witcher 2, I didnt try a very memory >>>> consuming >>>> game yet. >>>> But I dont really think that I have the same bug you are refering to - >>>> in WinXP x64 the /PATCHTPR boot flag did help greatly, it really >>>> boosted >>>> the performance to near native. >>> >>> What does this flag do? Googling for it found no results. >> See: >> http://lists.xenproject.org/archives/html/xen-users/2013-09/msg00254.html >> >> >> But now I came to the conclusion that I dont have the same issue with >> Win7 at all (see last email). > > This reminds me - I had issues with the latest GPLPV drivers on > Windows 7. The installer would just sit there and never complete, > which also, IIRC, left the VM OS in a dodgy state. So I nstalled the > same version (version number, not package, obviously) I've been > running on XP64 for ages (11.0.372) and that worked fine. > >>>> I dont think I encountered any memory usage, used like applications >>>> consuming the first 4GB of the DomU. >>> >>> I am inclined to agree, you aren't hitting the same problem. >>> >>>> Im trying to figure what to do for Windows 7, its working good too - >>>> even with VGA Passthrough, >>>> but its almost always consuming 33%-80% CPU usage for no reason... >>> >>> Can you check from within the domU which process is eating CPU? Or are >>> you saying that with Windows 7 inside your domU task manager is >>> showing 0% CPU usage but xentop is showing 33-80% CPU usage? >> I cant check, as states in the last email it must be about interrupts or >> power saving states - it only happens when I pass in the GFX. >> Without this the CPU is just idling on 0% inside the DomU. > > Funnily enough, I'm seeing something similar in dom0 when I use a > GT630 card, but not when I'm using an 8800GT or Q2K. With the GT630, > Xorg locks up immediately, eating 100% of CPU with ksoftirqd eating > another 100% of CPU. X process is unkillable so the only way to > recover is to reboot the machine. The same GT630 runs fine in another > machine so I'm reasonably sure that's not the problem. So it _could_ > be a similar obscure bug in the Nvidia driver. > > Have you tried 331.93? That's the driver I'm using. I'd like to agree on that point, however that slowdown occurs already if I just passthru the GFX >without< installing any drivers. But I'll do some more checks on that... > > > Gordan