device pcm kills SMP performance -CURRENT
maffew at sbcglobal.net
Wed Nov 12 13:09:18 PST 2003
I have an ACorp 6A815EPD motherboard, Intel i815
chipset, with a pair of P3 733s. My sound
card, is a SoundBlaster Live Value.
Whenever sound support is compiled in the Kernel,
performance takes a
huge hit, X runs about the same as on a P2 300 or so.
But If I boot to
a kernel that is configured exactly the same, without
device pcm, the system is very
Booting to a non-SMP kernel in 5.1-Release with or
without sound support, the system was very fast. I
did not try no sound support with SMP, as I thought
the issue was only SMP performance in general.
I then CVSuped to -CURRENT on Nov 8th, because at the
time I didn't realise the issue was isolated to the
sound system. However, I still have the same issue.
I also tried swapping the card into a diffrent PCI
slot, but that
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