[Bug 1100843] Re: Live Migration Causes Performance Issues

[Chris J Arges]

>From my testing this has been fixed in the saucy version (1.5.0) of qemu. It is fixed by this patch:
f1c72795af573b24a7da5eb52375c9aba8a37972

However later in the history this commit was reverted, and again broke this. The other commit that fixes this is:
211ea74022f51164a7729030b28eec90b6c99a08

So 211ea740 needs to be backported to P/Q/R to fix this issue. I have a v1 packages of a precise backport here, I've confirmed performance differences between savevm/loadvm cycles:
http://people.canonical.com/~arges/lp1100843/precise/

** No longer affects: linux (Ubuntu)

** Also affects: qemu-kvm (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Also affects: qemu-kvm (Ubuntu Quantal)
   Importance: Undecided
       Status: New

** Also affects: qemu-kvm (Ubuntu Raring)
   Importance: Undecided
       Status: New

** Also affects: qemu-kvm (Ubuntu Saucy)
   Importance: High
     Assignee: Chris J Arges (arges)
       Status: In Progress

** Changed in: qemu-kvm (Ubuntu Precise)
     Assignee: (unassigned) => Chris J Arges (arges)

** Changed in: qemu-kvm (Ubuntu Quantal)
     Assignee: (unassigned) => Chris J Arges (arges)

** Changed in: qemu-kvm (Ubuntu Raring)
     Assignee: (unassigned) => Chris J Arges (arges)

** Changed in: qemu-kvm (Ubuntu Precise)
   Importance: Undecided => High

** Changed in: qemu-kvm (Ubuntu Quantal)
   Importance: Undecided => High

** Changed in: qemu-kvm (Ubuntu Raring)
   Importance: Undecided => High

** Changed in: qemu-kvm (Ubuntu Saucy)
     Assignee: Chris J Arges (arges) => (unassigned)

** Changed in: qemu-kvm (Ubuntu Saucy)
       Status: In Progress => Fix Released

** Changed in: qemu-kvm (Ubuntu Raring)
       Status: New => Triaged

** Changed in: qemu-kvm (Ubuntu Quantal)
       Status: New => Triaged

** Changed in: qemu-kvm (Ubuntu Precise)
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/1100843

Title:
  Live Migration Causes Performance Issues

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