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From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Peter Zijlstra \(Intel\)" <peterz@infradead.org>,
        Tejun Heo <tj@kernel.org>, Joe Perches <joe@perches.com>,
        linux-kernel@vger.kernel.org,
        Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Subject: Re: [PATCH v1] lib/vsprintf.c: Even faster decimal conversion
Organization: D03
References: <87vbi96mcr.fsf@rasmusvillemoes.dk>
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	<20150311145229.523118d7190cebece1304d2a@linux-foundation.org>
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Date: Thu, 19 Mar 2015 22:41:40 +0100
In-Reply-To: <20150311145229.523118d7190cebece1304d2a@linux-foundation.org>
	(Andrew Morton's message of "Wed, 11 Mar 2015 14:52:29 -0700")
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On Wed, Mar 11 2015, Andrew Morton <akpm@linux-foundation.org> wrote:

> On Wed, 11 Mar 2015 00:01:11 +0100 Rasmus Villemoes <linux@rasmusvillemoes.dk> wrote:
>> Test and verification code on github
>> <https://github.com/Villemoes/dec>.  It would be nice if someone could
>> verify the code on architectures other than x86 - in particular, I
>> believe it _should_ work on big-endian, but I have no way of testing
>> that. Benchmark numbers would be nice too, of course.
>
> That would be nice.
>
> It would be best to make this as easy as possible for people.

Verification passed on both ppc64le and ppc64; the microbenchmark showed
improvements in 13-43% range for ppc64le and 13-34% for ppc64.

Thanks to Nishanth Aravamudan.

Rasmus