Subject: Re: [PATCH 0/6] fs: Scalability of sockets/pipes allocation/deallocation on SMP

From: Peter Zijlstra <a.p.zijlstra-/NLkJaSkS4VmR6Xm/[email-masked]>
Date: Fri, 28 Nov 2008 19:47:56 +0100

On Fri, 2008-11-28 at 19:03 +0100, Ingo Molnar wrote:
> * Eric Dumazet <dada1-fPLkHRcR87vqlBn2x/[email-masked]> wrote:
> 
> > 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).