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From: Adrian Chadd <adrian@freebsd.org>
To: John Baldwin <jhb@freebsd.org>
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Cc: freebsd-hackers@freebsd.org, Alexander Motin <mav@freebsd.org>
Subject: Re: ULE/sched issues on stable/9 - why isn't preemption occuring?
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Hi,

I've re-run the test with powerd and sleep state stuff disabled - lo
and behold, UDP tests are now up around 240-250MBit, what I'd expect
for this 2 stream 11n device.

So why is it that I lose roughly 80MBit of throughput with powerd and
C2/C3 enabled, when there's plenty of CPU going around? The NIC
certainly isn't going to sleep (I've not even added that code.)



Adrian