#40559 [Bgs]: UTF-8 PCRE process speed too slowly

ID: 40559 User updated by: hunreal at gmail dot com Reported By: hunreal at gmail dot com Status: Bogus Bug Type: PCRE related Operating System: FreeBSD 6.2, Windows PHP Version: 5.2.1 New Comment: I tested php 5.2.1 compiled with pcre 6.6, 6.7(bundled) and 7.0 on dual P3-1.13G, Freebsd 6.2. php 5.1.6 with bundled pcre 6.6, process time is 1.03s. php 5.2.1 with bundled pcre 6.7, process time is 4.07s. php 5.2.1 with pcre 6.6, process time is 4.38s. php 5.2.1 with pcre 7.0, process time is 2.43s. CFLAGS and CXXFLAGS is '-O2 -pipe -fno-strict-aliasing' PCRE is compiled by './configure --enable-utf8 --enable-unicode-properties'. PHP configure command, './configure' '--disable-debug' '--enable-inline-optimization' '--with-zlib' '--enable-zend-multibyte' '--enab le-mbregex' '--enable-mbstring=all' '--disable-cgi' '--with-iconv=/usr/local' '--with-l ibxml-dir=/usr/local' I use --with-pcre-regex=DIR to specify DIR where PCRE's include and library files are located. Previous Comments: ------------------------------------------------------------------------ [2007-02-20 15:22:40] tony2001@php.net The processing is done by PCRE library, not PHP. Please report this problem to PCRE developers. ------------------------------------------------------------------------ [2007-02-20 15:10:45] hunreal at gmail dot com Description: ------------ From PHP 5.2.0, I found the speed of PCRE process UTF-8 pattern is too slowly. Reproduce code: --------------- http://www.hshh.org/temp/test.phps Script is UTF-8 Simplified Chinese string pcre_replace testing. I was also tested replace PCRE lib of php 5.2.0 from 6.7 to 6.6 not bundled, no different result. Expected result: ---------------- FreeBSD, PHP 5.2.1, process time: 3.76s (dual p3-1.26G). Windows2003, PHP 5.2.0, process time: 17.91s (Pentium-M 1.7G) If I don't set 'pcre.backtrack_limit' to '-1', script will break pcre_replace. Actual result: -------------- PHP 5.1.6 at FreeBSD, process time: 0.93s ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=40559&edit=1