Re: [Xen-devel] Question about the ability of credit scheduler to handle I/O and CPU intensive VMs

[George Dunlap <George.Dunlap@xxxxxxxxxxxxx>]

On Fri, Oct 8, 2010 at 10:57 AM, George Dunlap
<George.Dunlap@xxxxxxxxxxxxx> wrote:
> Regarding tracing IO_READs: The code that did IO was refactored some
> time back; I remember trying to figure out how to cleanly do the
> tracing, but finding it difficult.  I can't remember now, though, what
> the issue was.  Let me take a look again.

Ah, that's right -- IO_READ was replaced with
IO{PORT,MEM}_{READ_WRITE}.  It's traced in
xen/arch/x86/hvm/emulate.c:hvmtrace_io_assist().  xenalyze simply
hasn't been updated to understand those traces yet.

 -George

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