Re: single copy pipe/fifo

[David S. Miller]

Manfred Spraul writes:
 > * if you run 2 instances on a dual cpu P II/350 it's a big win, but if
 > you run only one instance, then the bw_pipe processes will jump from one
 > cpu to the other and it's only a small improvement (~+15%).

wake_up_interruptible_sync is meant specifically to avoid
this cpu hopping behavior.

Later,
David S. Miller
[e-mail]