[Bug 1368439] Re: Random high latency with KSM enabled and multiple CPU sockets

[Serge Hallyn]

Is this still an issue for you?

There were some actual KSM corruption bugs which were somewhat recently
fixed.

KSM in general wil use more CPU in order to reduce memory contention, so
your results are not necessarily unexpected.  Aside from turning KSM
off, you can also reduce the KSM frequency.

There are some other tuning hints at http://www.linux-
kvm.org/page/Tuning_Kernel

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

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

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https://bugs.launchpad.net/bugs/1368439

Title:
  Random high latency with KSM enabled and multiple CPU sockets

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