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Re: [PATCH] spinlock spin with pause instruction

From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
To: cygwin-patches at cygwin dot com
Date: Fri, 11 Mar 2016 14:04:29 +0100
Subject: Re: [PATCH] spinlock spin with pause instruction
Authentication-results: sourceware.org; auth=none
References: <CAKw7uVgrjqZVznRMoCbsjyz4YXast5YtAAmpWQorOw7YXqbOhw at mail dot gmail dot com> <CAKw7uVg78t2V8KKLYfPyhb97XjU+aUb4KV-poz7i_wwDeJ6b=g at mail dot gmail dot com>
Reply-to: cygwin-patches at cygwin dot com

On Mar 11 11:28, VÃclav Haisman wrote:
> Hi.
> 
> I have noticed that Cygwin's spinlock goes into heavy sleeping code
> for each spin. It seems it would be a good idea to actually try to
> spin a bit first. There is this 'pause' instruction which let's the
> CPU make such busy loops be less busy. Here is a patch to do this.

Applied.


Thanks,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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References:
- Fwd: [PATCH] spinlock spin with pause instruction
  - From: VÃclav Haisman

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