HEADS UP - major structure size changes in HEAD
dillon at apollo.backplane.com
Wed Jun 9 11:05:03 PDT 2010
:> This is time you could have spent
:> running a task that potentially *could* get some work done (nevermind
:> the cmp
:... the cmpxchg bus traffic).
:Phone ringing is bad for your concentration.
The cache management traffic is definitely an issue. That's where
something like MONITOR/MWAIT could help a lot, or even just a PAUSE
We could conceivably get a lot more sophisticated but at least for now
perhaps we should just stick with a PAUSE instruction. I'll add one
to the contention path in lwkt_switch().
<dillon at backplane.com>
More information about the Kernel