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xen-devel
Re: [Xen-devel] [PATCH 10/10][TOOLS][XM-TEST] Fix Memory assumptions in
On Mon, Oct 23, 2006 at 11:55:22AM +0100, Ewan Mellor wrote:
> I'm not convinced by this one. Just because 32 MiB is known to be safe, that
> doesn't mean that 31 MiB will cause the domain to crash. The 16 MiB value is
> deliberately _far_ too small, so that the OOM killer kicks in, and the console
> runaway is detected.
Okay, that makes more sense.
> I don't want this test to intermittently succeed, even if it is a negative
> test -- it makes the results hard to analyse.
>
> Is the 16 MiB value a problem for PPC, or were you deliberately trying to test
> that 63 MiB failed on that platform?
PPC will fail for any memory value < 64M, so 16 or 63 makes little
difference. I probably should haev said this in the commit message but
I changed this test to use minSafeMem() to be consistent with the other
changes I made.
> We could add another arch-specific option -- tooLittleMem() or something -- or
> we could just leave this value at 16 MiB.
Okay leaving it set at 16MiB, is probably the right thing. If we get to
a state the an architecture or OS needs to vary it we can look at
something like tooLittleMem() then.
Yours Tony
linux.conf.au http://linux.conf.au/ || http://lca2007.linux.org.au/
Jan 15-20 2007 The Australian Linux Technical Conference!
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