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[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after h
From: |
Jürgen Veidt |
Subject: |
[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram |
Date: |
Thu, 06 Oct 2016 21:25:06 -0000 |
I observed a similar behavior with a different application on a Windows host.
The application is using the multimedia timer. In my case it seems that the
timer is catching up the ticks missed during suspend to ram after resume. The
timer thread performing the callbacks has high-priority on Windows and makes
the host machine almost unusable for a certain time depending on the suspend
duration.
Maybe it is a similar situation here?
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https://bugs.launchpad.net/bugs/1174654
Title:
qemu-system-x86_64 takes 100% CPU after host machine resumed from
suspend to ram
Status in QEMU:
Confirmed
Status in qemu package in Ubuntu:
Invalid
Bug description:
I have Windows XP SP3 inside qemu VM. All works fine in 12.10. But
after upgraiding to 13.04 i have to restart the VM each time i
resuming my host machine, because qemu process starts to take CPU
cycles and OS inside VM is very slow and sluggish. However it's still
controllable and could be shutdown by itself.
According to the taskmgr any active process takes 99% CPU. It's not
stuck on some single process.
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