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

[Waiman Long]

On 09/04/2013 11:14 AM, Linus Torvalds wrote:
> On Wed, Sep 4, 2013 at 7:52 AM, Waiman Long<waiman.long@xxxxxx>  wrote:
> > The latest tty patches did work. The tty related spinlock contention is now
> > completely gone. The short workload can now reach over 8M JPM which is the
> > highest I have ever seen.
> Good. And this was with the 80-core machine, so there aren't any
> scalability issues hiding?
>
>               Linus

Yes, the perf profile was taking from an 80-core machine. There isn't 
any scalability issue hiding for the short workload on an 80-core machine.

However, I am certain that more may pop up when running in an even 
larger machine like the prototype 240-core machine that our team has 
been testing on.

-Longman
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