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xen-devel
RE: [Xen-devel] xm mem-set causes kernel panic
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To: |
"Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx> |
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Subject: |
RE: [Xen-devel] xm mem-set causes kernel panic |
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From: |
"Puthiyaparambil, Aravindh" <aravindh.puthiyaparambil@xxxxxxxxxx> |
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Date: |
Thu, 4 May 2006 11:49:37 -0400 |
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Cc: |
"Carb, Brian A" <Brian.Carb@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, "Krysan, Susan" <KRYSANS@xxxxxxxxxx>, "Subrahmanian, Raj" <raj.subrahmanian@xxxxxxxxxx>, "Vessey, Bruce A" <Bruce.Vessey@xxxxxxxxxx> |
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Thu, 04 May 2006 08:50:12 -0700 |
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Thread-topic: |
[Xen-devel] xm mem-set causes kernel panic |
> I don't think this behaviour is surprising. The kernel is probably
> taking about 1% of memory to track memory usage. So trying to balloon
> down to 1-2% of your initial memory reservation is rather harsh.
I agree.
> The 'fix' here is to stop users being able to shoot their feet off, by
> setting a lower bound on ballooning that is related to the initial
> memory size of the guest, and/or quiesce the balloon driver when
> low-memory and out-of-memory code paths are executed in the guest.
We will look into this and send in a patch.
Cheers,
Aravindh
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