Dag-Erling Smørgrav wrote:
Mike Silbersack <[EMAIL PROTECTED]> writes:
2. Now, powerd seems to be causing ~30% system cpu load - top shows
it switching between the "nanslp" and "ecpoll" wait states. This may
be due to some other recent change to acpi, I'm not sure how to best
test.
Try running powerd with a 5000 ms polling interval. With the default
of 500 ms, it never seems to stabilize, but keeps oscillating wildly
in the 75-300 MHz range on my Dell Latitude D600.
That is bad for performance. It can then take up to 10-15 seconds to
promote back to 100% CPU when your system becomes busy.
I've said it many times: we need a real predictive algorithm. Taking a
single sample will always have hysteresis problems. See the acpi@ list
archives for much more detail and a good summary, including linked
papers, here.
http://wikitest.freebsd.org/moin.cgi/powerd
--
Nate
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