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[Qemu-devel] [Bug 1441781] Re: qemuProcessSetEmulatorAffinity() not beha
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [Bug 1441781] Re: qemuProcessSetEmulatorAffinity() not behaving as expected |
Date: |
Fri, 10 Apr 2015 10:13:31 -0000 |
** Also affects: libvirt
Importance: Undecided
Status: New
** Changed in: qemu
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1441781
Title:
qemuProcessSetEmulatorAffinity() not behaving as expected
Status in libvirt virtualization API:
New
Status in QEMU:
Invalid
Bug description:
When running on a 24-CPU host and using vCPU and emulator pinning I've
seen cases where the specified emulator pinning isn't applied as
expected.
It appears the bug was introduced/uncovered by 411cea6 which moved
both qemuSetupCgroupForEmulator() and qemuProcessSetEmulatorAffinity()
up before the call to qemuProcessWaitForMonitor(). Reverting this
commit makes the problem go away.
It's not obvious why this makes a difference, since the pid had to
have been up and running already.
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