On Wed, Oct 26, 2016 at 11:07 AM, Yuri Pankov <yuri.pan...@nexenta.com> wrote:
> On Wed, 26 Oct 2016 11:04:07 -0400, Sebastien Roy wrote:
>>
>> On Wed, Oct 26, 2016 at 9:47 AM, Hans Rosenfeld
>> <hans.rosenf...@nexenta.com> wrote:
>>>
>>> So perhaps apix/pcmplusmp need to do some cleanup work when interrupts
>>> are released so that ESXi understands what happens there. I don't really
>>> know.
>>>
>>> Disabling the use of MSI-X in nvme on ESXi seems to workaround that
>>> problem. I've asked that question before: There are already a few other
>>> drivers in illumos that disable MSI-X when running on ESXi. Should nvme
>>> do the same, or would it better to disable MSI-X on ESXi completely?
>>
>>
>> We're working on interrupt/CPU scalability for vmxnet3s that relies on
>> MSI-X (which is already being used reliably by the current driver
>> which uses one per device). I would say that disabling MSI-X for the
>> entire platform would be a non-starter from our perspective.
>
>
> I think this is more about the devices in PCI passthrough mode (and not the
> "native" ones), seen a lot of issues with MSI-X enabled there.

I see, thanks for the clarification.

-Seb


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