Poor interactive response from the FC2 kernel on SMP hardware?

[Dan Berger]

Folks - I've been running FC1 with a home-build (stock) 2.6.X kernel for
several months without issue.  

I upgraded to FC2 the other night and was immediately struck by the poor
interactive performance of the system.  Audio (Ogg) played via rythmbox
skips and stutters during I/O, the GUI pauses for "long" periods (where
long is > 0), etc.

I just built a stock 2.6.6 kernel using the i686 smp config file shipped
with FC2, and performance is much improved.  (I'm typing this, listening
to music, and doing a make clean on the kernel tree with no stuttering.)

Have others seen this issue?  Is it known?  A search of this list didn't
turn up anything that clearly matched, nor did a search of RH Bugzilla.

Cheers.
--

...Dan Berger [dberger at oubliette.org]
   http://www.oubliette.org/~dberger
   Inter arma silent leges
   A982 E6B1 CB2F 7A49  843A 9297 DA73 4371  1F54 8D0C

   "Little soul, big world. Eat, sleep, and eat. Many souls."
   "Cattle on the ship three weeks, she don't go near 'em. Suddenly
    we're on Jianying, and she's got a driving need to commune with the
    beasts?"
   "They weren't cows inside. They were waiting to be, but they
    forgot. Now they see sky, and they remember what they are."
   "Is it bad that what she said makes perfect sense to me?"

                         - River and Mal, Firefly: "Safe"
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