Ubuntu
linux-ec2 package

  1. Bug #929941
  2. Comment #12

Comment 12 for bug 929941

Revision history for this message
Matt Wilson (msw-amazon) wrote : Re: Kernel deadlock in scheduler on m2.{2,4}xlarge EC2 instance

Stefan,

Which commit has the race condition comment? I'm aware of a problem with SUSE's kernel with regard to PV ticketlocks and HYPERVISOR_poll(), but I don't see any mention in upstream 3.2.x or XenLinux 2.6.18.

Your 10.04 2.6.32-era kernel doesn't have ticketlocks, so the underlying hypervisor version should not be a factor. But for the sake of argument, the lockups are observed on Xen hypervisors newer than 3.2.

What are you using for upstream Xen components for 2.6.32? Is it the SUSE tree?