On Fri, 2008-11-28 at 19:03 +0100, Ingo Molnar wrote:

* Eric Dumazet [off-list ref] wrote:

quoted

Hi all

Short summary : Nice speedups for allocation/deallocation of sockets/pipes
(From 27.5 seconds to 1.6 second)

Wow, that's incredibly impressive! :-)

Yeah, we got a similar speedup on -rt by pushing those super-block files
list into per-cpu lists and doing crazy locking on them.

Of course avoiding them all together, like done here is a nicer option
but is sadly not a possibility for regular files (until hch gets around
to removing the need for the list).