From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin-patches@cygwin.com
Subject: Re: [PATCH] spinlock spin with pause instruction
Date: Fri, 11 Mar 2016 13:04:00 -0000 [thread overview]
Message-ID: <20160311130429.GA30865@calimero.vinschen.de> (raw)
In-Reply-To: <CAKw7uVg78t2V8KKLYfPyhb97XjU+aUb4KV-poz7i_wwDeJ6b=g@mail.gmail.com>
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On Mar 11 11:28, Václav 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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next prev parent reply other threads:[~2016-03-11 13:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAKw7uVgrjqZVznRMoCbsjyz4YXast5YtAAmpWQorOw7YXqbOhw@mail.gmail.com>
2016-03-11 10:28 ` Fwd: " Václav Haisman
2016-03-11 13:04 ` Corinna Vinschen [this message]
2016-03-12 6:25 ` Mark Geisert
2016-03-12 8:14 ` Václav Haisman
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