Alex Williamson wrote:
When you say "multiple times", it is several, or a lot more?
Maybe it is NAPI?
The system would run out of the ~1000 available GSIs in a minute or two
with just an e1000e available to the guest. So that's something on the
order of 10/s. This also causes a printk in the host ever time the
interrupt in enabled, which can't help performance and gets pretty
annoying for syslog. I was guessing some kind of interrupt mitigation,
such as NAPI, but a qlogic FC card seems to do it too (seemingly at a
slower rate).
I see. And what is the path by which it is disabled? The mask bit in
the MSI entry?
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