From: Reinoud Zandijk <reinoud@NetBSD.org>
To: "Daniel P. Berrangé" <berrange@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: Win10 always takes 100% cpu power even when idle
Date: Wed, 17 Mar 2021 18:00:37 +0100 [thread overview]
Message-ID: <YFI1tThW/xpwNOsc@diablo.13thmonkey.org> (raw)
In-Reply-To: <YFIr7YJvjGXURoRl@redhat.com>
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On Wed, Mar 17, 2021 at 04:18:53PM +0000, Daniel P. Berrangé wrote:
> On Wed, Mar 17, 2021 at 05:11:22PM +0100, Reinoud Zandijk wrote:
> > when executing Qemu with
> >
> > qemu-system-x86_64 -m 4G -smp cores=2 -M q35 -snapshot \
> > -drive file=/home/reinoud/Downloads/Win10-demo.raw,format=raw \
> > -rtc base=localtime,clock=host -spice port=5924,disable-ticketing=on \
> > -vga qxl -usb -device usb-tablet -net nic -net tap,ifname=tap0,script=no
> >
> > my cpu usage in Windows10 *allways* reports 100% cpu usage. On the host system
> > its always 190%+ ie it is really taking two cores completely.
> IIRC, "-usb" still adds a USB-1 controller and that's known to be bad for
> causing high load in Windows guests in particular. So before debugging
> anything else, I'd suggest configuring a USB-3 controller instead - see
> docs/usb2.txt XHCI info.
I tried that and added `-device qemu-xhci' instead of the `-usb' and it indeed
showed an USB 3 interface. It didn't help though; its still consuming 100% CPU
from both configured CPUs.
When I completely remove USB, i get the jagged mouse again but it makes no
difference :-/
Reinoud
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next prev parent reply other threads:[~2021-03-17 17:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-17 16:11 Win10 always takes 100% cpu power even when idle Reinoud Zandijk
2021-03-17 16:18 ` Daniel P. Berrangé
2021-03-17 17:00 ` Reinoud Zandijk [this message]
2021-03-17 17:05 ` Daniel P. Berrangé
2021-03-17 21:29 ` Reinoud Zandijk
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