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Subject: Re: [RFC] implement QUEUED spinlocks on powerpc
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Eric Dumazet <edumazet@google.com>, Michael Ellerman <mpe@ellerman.id.au>
Cc: Eric Dumazet <eric.dumazet@gmail.com>, Paul Mackerras <paulus@samba.org>,
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On Wed, 2017-02-01 at 20:40 -0800, Eric Dumazet wrote:
> A typical benchmark would be to use 200 concurrent netperf -t TCP_RR,
> through a single qdisc (protected by a spinlock)
> 
> Non ticket/queued spinlocks behave quite bad in this scenario.
> 
> I can try this next week if you want.

That would be great !

Cheers,
Ben.