linux-kernel - Re: [RFC 0/2] ABI for clock_gettime

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Message-ID: <CALCETrXeXqYhU11OLECF-Kp+F1w34NFvvn2X2fuvsf+pciiLTw@mail.gmail.com>
Date:	Tue, 20 Dec 2011 17:07:45 -0800
From:	Andy Lutomirski <luto@...capital.net>
To:	Arun Sharma <asharma@...com>
Cc:	linux-kernel@...r.kernel.org, Kumar Sundararajan <kumar@...com>,
	john stultz <johnstul@...ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [RFC 0/2] ABI for clock_gettime_ns

On Tue, Dec 20, 2011 at 4:50 PM, Arun Sharma <asharma@...com> wrote:
> On 12/12/11 5:26 PM, Andy Lutomirski wrote:
>>
>> On x86-64, clock_gettime is so fast that the overhead converting to and
>> from nanoseconds is non-negligible.  clock_gettime_ns is a different
>> interface that is potentially faster.  If people like the ABI, I'll
>> implement an optimized version.
>
>
> Didn't see any major objections to this proposal.
>
> Andy: will you be posting an optimized version?

Yes, probably in a day or two.  It's mostly written, but I want to
generate some benchmarks to go with it.

--Andy
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