From owner-freebsd-hackers  Wed Jan 29 14:47:30 1997
Return-Path: <owner-hackers>
Received: (from root@localhost)
          by freefall.freebsd.org (8.8.5/8.8.5) id OAA27266
          for hackers-outgoing; Wed, 29 Jan 1997 14:47:30 -0800 (PST)
Received: from alpo.whistle.com (alpo.whistle.com [207.76.204.38])
          by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id OAA27251
          for <hackers@freebsd.org>; Wed, 29 Jan 1997 14:47:27 -0800 (PST)
Received: from current1.whistle.com (current1.whistle.com [207.76.205.22])
          by alpo.whistle.com (8.8.4/8.8.4) with SMTP
	  id OAA25606 for <hackers@freebsd.org>; Wed, 29 Jan 1997 14:46:26 -0800 (PST)
Message-ID: <32EFD2E2.167EB0E7@whistle.com>
Date: Wed, 29 Jan 1997 14:44:50 -0800
From: Julian Elischer <julian@whistle.com>
Organization: Whistle Communications
X-Mailer: Mozilla 3.0Gold (X11; I; FreeBSD 2.2-CURRENT i386)
MIME-Version: 1.0
To: hackers@freebsd.org
Subject: [Fwd: freebsd performance.]
Content-Type: multipart/mixed; boundary="------------794BDF32446B9B3D2781E494"
Sender: owner-hackers@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

This is a multi-part message in MIME format.

--------------794BDF32446B9B3D2781E494
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

A commnet from someone using FreeBSD in a production 
project..

I know nothing about the regex stuff...
anyone have comments?

people who have committed their proffesional name on using freeBSD
deserve sume special support.

julian

--------------794BDF32446B9B3D2781E494
Content-Type: message/rfc822
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

Return-Path: <jason@idiom.com>
Received: from whistle.com (whistle.whistle.com [207.76.205.131])
          by alpo.whistle.com (8.8.4/8.8.4) with ESMTP
	  id JAA18431 for <julian@alpo.whistle.com>; Wed, 29 Jan 1997 09:42:39 -0800 (PST)
Received: (from smap@localhost) by whistle.com (8.7.5/8.6.12) id JAA16637 for <julian@whistle.com>; Wed, 29 Jan 1997 09:42:37 -0800 (PST)
Received: from gatekeeper.whistle.com(207.76.204.2) by whistle.com via smap (V1.3)
	id sma016635; Wed Jan 29 09:42:31 1997
Received: (from smap@localhost) by gatekeeper (8.7.5/8.6.12) id JAA15158 for <julian@whistle.com>; Wed, 29 Jan 1997 09:42:31 -0800 (PST)
Received: from idiom.com(140.174.82.4) by gatekeeper via smap (V1.3)
	id sma015156; Wed Jan 29 09:41:12 1997
Received: from localhost (jason@localhost [127.0.0.1]) by idiom.com (8.8.5/8.8.3) with SMTP id JAA10621 for <julian@whistle.com>; Wed, 29 Jan 1997 09:41:11 -0800 (PST)
Message-Id: <199701291741.JAA10621@idiom.com>
X-Authentication-Warning: idiom.com: jason@localhost [127.0.0.1] didn't use HELO protocol
To: julian@whistle.com
Subject: freebsd performance.
Date: Wed, 29 Jan 1997 09:41:11 -0800
From: Jason Venner <jason@idiom.com>


The posix regex library is VERY VERY slow.

I have a program that uses a large regex to parse some input.

I have a version in perl and a version in C++ using the freebsd posix
regex library.

The perl version is 100X faster that the C++ version.

gprof on the C++ version shows 99% of the spend in:

 91.53     46.17    46.17  1152366     0.04     0.04  lstep
  6.52     49.46     3.29    98497     0.03     0.47  lslow



--------------794BDF32446B9B3D2781E494--