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[Xen-devel] VT is comically slow

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: Rik van Riel <riel@xxxxxxxxxx>
  • Date: Mon, 03 Jul 2006 04:28:58 -0400
  • Delivery-date: Mon, 03 Jul 2006 01:29:25 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

VT by itself seems fine, but once a VT domain is running a workload that
is network intensive combined with a disk/cpu intensive workload, things
get incredibly slow.

Operations that take less than a second with either workload running
alone can now take many seconds, sometimes the better part of a minute!

Is this some limitation of the qemu device model?

"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan

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