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From: Junio C Hamano <gitster@pobox.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: Git Mailing List <git@vger.kernel.org>, Jeff King <peff@peff.net>,
	Jeffrey Walton <noloader@gmail.com>
Subject: Re: Very promising results with libpcre2
Date: Fri, 31 Mar 2017 15:48:14 -0700	[thread overview]
Message-ID: <xmqqtw69vz9t.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <CACBZZX6FcHcY7cYs6s_pv=E43cHNmzyUY5wrcuhPWWmUixCL+g@mail.gmail.com> (=?utf-8?B?IsOGdmFyIEFybmZqw7Zyw7A=?= Bjarmason"'s message of "Fri, 31 Mar 2017 23:23:34 +0200")

Ævar Arnfjörð Bjarmason <avarab@gmail.com> writes:

> That enables the new JIT support in pcre v2:
>
>       s/iter    rx fixed   prx
> rx      2.19    --  -33%  -44%
> fixed   1.47   49%    --  -17%
> prx     1.22   79%   20%    --

The numbers with JIT does look "interesting".  

I couldn't quite tell if there are major incompatibilities in the
regex language itself between two versions from their documentation,
but assuming that there isn't (modulo bugfixes and enhancements) and
assuming that we are going to use their standard matcher, it may be
OK to just use the newer one without linking both.


  reply	other threads:[~2017-03-31 22:48 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-31 21:23 Very promising results with libpcre2 Ævar Arnfjörð Bjarmason
2017-03-31 22:48 ` Junio C Hamano [this message]
2017-04-01  8:55   ` Ævar Arnfjörð Bjarmason
2017-04-01 18:24     ` Junio C Hamano
2017-04-01 19:11       ` Ævar Arnfjörð Bjarmason
2017-04-02  3:45         ` Junio C Hamano
2017-04-01 23:33       ` Jeffrey Walton
2017-04-02  3:45         ` Junio C Hamano

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