Re: [PATCH v7 1/4] spinlock: A new lockref structure for locklessupdate of refcount

[Peter Zijlstra]

On Thu, Aug 29, 2013 at 09:43:07AM -0700, Linus Torvalds wrote:

> We'll see. The real problem is that I'm not sure if I can even see the
> scalability issue on any machine I actually personally want to use
> (read: silent). On my current  system I can only get up to 15%
> _raw_spin_lock by just stat'ing the same file over and over and over
> again from lots of threads.

Yeah, silent basically limits you to i7 single socket systems and sadly
Intel doesn't seem to want to make those with more than 4 cores on :/

I've got a i7-K part (SNB iirc) with a _huge_ scythe cooler and a high
efficiency fanless PSU for a system that's near noiseless -- as in my
Thinkpad actually makes more noise.
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