[Bug 1914667] Re: High cpu usage when guest is idle on qemu-system-i386

2021-07-11 Thread Launchpad Bug Tracker
[Expired for QEMU because there has been no activity for 60 days.] ** Changed in: qemu Status: Incomplete => Expired -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1914667 Title: High cpu us

[Bug 1914667] Re: High cpu usage when guest is idle on qemu-system-i386

2021-05-12 Thread Thomas Huth
The QEMU project is currently moving its bug tracking to another system. For this we need to know which bugs are still valid and which could be closed already. Thus we are setting the bug state to "Incomplete" now. If the bug has already been fixed in the latest upstream version of QEMU, then plea

[Bug 1914667] Re: High cpu usage when guest is idle on qemu-system-i386

2021-02-10 Thread John Arbuckle
I found a way to fix the high host cpu usage issue. To fix this issue click on Start->All Programs->Accessories->System Tools->System Restore. Then pick a restore point that is set before you tried the smp option. After the VM restarts the high CPU usage issue will be gone :) -- You received this

[Bug 1914667] Re: High cpu usage when guest is idle on qemu-system-i386

2021-02-10 Thread John Arbuckle
After updating QEMU to 1214d55d1c41fbab3a9973a05085b8760647e411, I reinstalled Windows XP and the host CPU usage at idle was normal. My guess is that I picked a bad commit to reinstall Windows XP. I tried using "-smp 4". Windows XP started up to a black screen. When I restarted the problem with hi

[Bug 1914667] Re: High cpu usage when guest is idle on qemu-system-i386

2021-02-04 Thread John Arbuckle
For version 5.2 of qemu-system-i386 the instruction the guest is busy executing over and over again is this: addb %al, (%eax) For version 2.10.1 this is the instruction that is being executed when the guest is idle: add %al,(%eax) -- You received this bug notification because you are a member o

[Bug 1914667] Re: High cpu usage when guest is idle on qemu-system-i386

2021-02-04 Thread John Arbuckle
Just to compare notes I ran my same Windows XP image on an older version of QEMU. This is version 2.10.1. It was built for the x86_64 architecture. The host CPU architecture is aarm64. The host CPU usage was actually very low when the guest CPU usage was low. The guest was using about 8% and the ho