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From: Jason Baron <jbaron@akamai.com>
To: Davidlohr Bueso <dave@stgolabs.net>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
	linux-fsdevel@vger.kernel.org,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Salman Qazi <sqazi@google.com>
Subject: Re: [PATCH] epoll: avoid calling ep_call_nested() from ep_poll_safewake()
Date: Tue, 31 Oct 2017 10:14:47 -0400	[thread overview]
Message-ID: <2a96ebdd-f24b-23f3-2e53-d04a717c4378@akamai.com> (raw)
In-Reply-To: <20171028140533.e3n4zpno66kyfdm3@linux-n805>



On 10/28/2017 10:05 AM, Davidlohr Bueso wrote:
> On Wed, 18 Oct 2017, Jason Baron wrote:
> 
>> http://lkml.iu.edu/hypermail//linux/kernel/1501.1/05905.html
>>
>> We can work through these ideas or others...
> 
> So, unsurprisingly, I got some _really_ good results on the epoll_wait()
> benchmark by removing the readywalk list altogether -- something like
> 4000% in some cases. It's also survived more testing, although I'm still
> waiting for customer confirmation on his real workload, which helps
> further test the changes (along with this patch to move the safewake
> list to debug).
> 
> Could you please resend patch 1 in the series above?
> 

Hi,

I've resent patch 1 with some cleanups now. Thanks for the testing feedback.

Thanks,

-Jason

  reply	other threads:[~2017-10-31 14:14 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-13 18:48 [PATCH] epoll: avoid calling ep_call_nested() from ep_poll_safewake() Jason Baron
2017-10-17 15:37 ` Davidlohr Bueso
2017-10-18 14:03   ` Jason Baron
2017-10-28 14:05     ` Davidlohr Bueso
2017-10-31 14:14       ` Jason Baron [this message]
2018-01-18 11:00     ` Hou Tao
2018-01-18 21:18       ` Jason Baron

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