:I agree that "it's to be expected", but the "it doesn't matter"
:argument is pretty lame. It matters. Coming to FreeBSD the
:first time, I would definitely make a decision for 4.7 vs. 5.x
:if performance were an issue for me. I still have not seen a
:reasonable justification for interrupt threads (for example),
:except that they are easier to understand and program.
:
:-- Terry
Interrupt threads have 'grown' on me. I like them.
But I come from an embedded world where switching threads
costs no more then a procedure call. The way I figure it,
we will eventually be able to make -current's scheduler
efficient enough such that the overhead of switching to
an interrupt thread becomes a non-issue, and they take care
of the big problem we've always had with interrupts under
SMP... managing interrupts in an SMP environment.
I am somewhat partial to the interrupt context stealing
idea too, though I'm not sure if the added complexity is
worth it (time may be better spent improving the scheduler).
-Matt
Matthew Dillon
<[EMAIL PROTECTED]>
To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-current" in the body of the message
