Re: [PATCH 0/8] locking/core patches

[Andrew Morton]

On Mon, 10 Feb 2014 20:58:20 +0100 Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> Hi all,
> 
> I would propose merging the following patches...
> 
> The first set is mostly from Jason and tweaks the mutex adaptive
> spinning, AIM7 throughput numbers:
> 
> PRE:  100   2000.04  21564.90 2721.29 311.99     3.12       0.01     0.00     99
> POST: 100   2000.04  42603.85 5142.80 311.99     3.12       0.00     0.00     99

What do these columns represent?  I'm guessing the large improvement
was in context switches?

> The second set is the qrwlock, although mostly rewritten by me. I didn't do
> much with it other than boot and build a kernel. But I like them because
> of the much better worst case preformance.
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