I can only find two settings which can cause the issue predictable.
hdparm -c2 or -c3 /dev/hdX
I can not reproduce the lost interrupts at some of the reported rates
recently. I can produce them under certain situations, but not at a
predicatble rate. This is not a simple race to find.
It is looking like a possible OS v/s device race for interrupt delivery.
More likely the device issues the interrupt w/ out the handler being
armed.
Cheers,
Andre Hedrick
LAD Storage Consulting Group
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