Re: [RFC PATCH 0/4] Gang scheduling in CFS

From: Ingo Molnar
Date: Fri Dec 30 2011 - 04:54:15 EST

* Avi Kivity <avi@xxxxxxxxxx> wrote:

> [...]
> The first part appears to be unrelated to ebizzy itself - it's
> the kunmap_atomic() flushing ptes. It could be eliminated by
> switching to a non-highmem kernel, or by allocating more PTEs
> for kmap_atomic() and batching the flush.

Nikunj, please only run pure 64-bit/64-bit combinations - by the
time any fix goes upstream and trickles down to distros 32-bit
guests will be even less relevant than they are today.


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