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>,
linuxppc-dev@lists•ozlabs.org, Kevin Hao <haokexin@gmail•com>,
Torsten Duwe <duwe@suse•de>,
Pan Xinhui <xinhui.pan@linux•vnet.ibm.com>
Subject: Re: [RFC] implement QUEUED spinlocks on powerpc
Date: Thu, 02 Feb 2017 15:42:13 +1100 [thread overview]
Message-ID: <1486010533.4850.26.camel@kernel.crashing.org> (raw)
In-Reply-To: <CANn89iKVtGt=mL32BVryzSCHcuNR93jO+GzR+pgr-1NHast26g@mail.gmail.com>
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.
next prev parent reply other threads:[~2017-02-02 4:42 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-01 17:05 [RFC] implement QUEUED spinlocks on powerpc Eric Dumazet
2017-02-01 20:37 ` Benjamin Herrenschmidt
2017-02-02 4:04 ` Michael Ellerman
2017-02-02 4:40 ` Eric Dumazet
2017-02-02 4:42 ` Benjamin Herrenschmidt [this message]
2017-02-07 6:21 ` panxinhui
2017-02-07 6:46 ` Eric Dumazet
2017-02-07 7:22 ` panxinhui
2017-02-13 9:08 ` panxinhui
2017-02-15 10:17 ` panxinhui
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