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[Bug 1877716] Re: Win10 guest unusable after a few minutes
From: |
Stefan Hajnoczi |
Subject: |
[Bug 1877716] Re: Win10 guest unusable after a few minutes |
Date: |
Mon, 11 May 2020 15:21:24 -0000 |
I have been able to reproduce the issue and found that nodes are not
being removed from the AioContext->aio_handlers list when
aio_set_fd_handler() is called. perf shows that large amounts of CPU
time are spent in aio_pending().
Working on getting to the bottom of the issue and fixing it.
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https://bugs.launchpad.net/bugs/1877716
Title:
Win10 guest unusable after a few minutes
Status in QEMU:
New
Bug description:
On Arch Linux, the recent qemu package update seems to misbehave on
some systems. In my case, my Windows 10 guest runs fine for around 5
minutes and then start to get really sluggish, even unresponsive. It
needs to be forced off. I could reproduce this on a minimal VM with no
passthrough, although my current testing setup involves an nvme pcie
passthrough.
I bisected it to the following commit which rapidly starts to run sluggishly
on my setup:
https://github.com/qemu/qemu/commit/73fd282e7b6dd4e4ea1c3bbb3d302c8db51e4ccf
I've ran the previous commit (
https://github.com/qemu/qemu/commit/b321051cf48ccc2d3d832af111d688f2282f089b
) for the entire night without an issue so far.
I believe this might be a duplicate of
https://bugs.launchpad.net/qemu/+bug/1873032 , although I'm not sure.
Linux cc 5.6.10-arch1-1 #1 SMP PREEMPT Sat, 02 May 2020 19:11:54 +0000 x86_64
GNU/Linux
AMD Ryzen 7 2700X Eight-Core Processor
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- [Bug 1877716] Re: Win10 guest unsuable after a few minutes, (continued)
- [Bug 1877716] Re: Win10 guest unsuable after a few minutes, Xavier, 2020/05/09
- [Bug 1877716] Re: Win10 guest unsuable after a few minutes, Xavier, 2020/05/09
- [Bug 1877716] Re: Win10 guest unsuable after a few minutes, zkrx, 2020/05/09
- [Bug 1877716] Re: Win10 guest unusable after a few minutes, zkrx, 2020/05/11
- Re: [Bug 1877716] [NEW] Win10 guest unsuable after a few minutes, Stefan Hajnoczi, 2020/05/11
- [Bug 1877716] Re: Win10 guest unusable after a few minutes, post-factum, 2020/05/11
- [Bug 1877716] Re: Win10 guest unusable after a few minutes, Stefan Hajnoczi, 2020/05/11
- [Bug 1877716] Re: Win10 guest unusable after a few minutes, Alexander Bus, 2020/05/11
- [Bug 1877716] Re: Win10 guest unusable after a few minutes,
Stefan Hajnoczi <=
- [Bug 1877716] Re: Win10 guest unusable after a few minutes, Anatol Pomozov, 2020/05/11
- [Bug 1877716] Re: Win10 guest unusable after a few minutes, Stefan Hajnoczi, 2020/05/11
- [Bug 1877716] Re: Win10 guest unusable after a few minutes, post-factum, 2020/05/12
- [Bug 1877716] Re: Win10 guest unusable after a few minutes, zkrx, 2020/05/12
- [Bug 1877716] Re: Win10 guest unusable after a few minutes, Anatol Pomozov, 2020/05/14
- [Bug 1877716] Re: Win10 guest unusable after a few minutes, Thomas Huth, 2020/05/22