*** This bug is a duplicate of bug 1307473 ***
https://bugs.launchpad.net/bugs/1307473
I am not sure whether this bug is really a duplicate of #1307473.
I experienced the problems described in this bug report without CPU
pinning being used. I might add that I had the impression that Windows
guests (Windows Server 2012 R2) were more severly affected than Linux
guests. However, Linux guests seemed to be more affected if also running
the 3.13 kernel.
In my case, I experienced the problem after upgrading a VM host from
Precise (using kernel 3.5.0-52) to Trusty (using kernel 3.13.0-30). For
now, I downgraded back to Precise which made the problems go away.
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https://bugs.launchpad.net/bugs/1333553
Title:
linux-image-3.13.0-29-generic - soft lockup in kvm guests
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