Description:
------------
Php is slow under Mac OS X 10.4 (tiger). All php code that is not "simple" is slow. Page generation time is ranging from 8 to 15 seconds for page normally taking less than 1 second. I've tracked down the problem to a system-call filesystem related problem

Please see those threads :

http://marc.theaimsgroup.com/?l=php-dev&m=113200357113670
http://marc.theaimsgroup.com/?t=112670317500004
for more details, and the solution I've found.

Reproduce code:
---------------
- Take a php app (forum like phpbb, gallery2, mambo cms, or others)
- Use it under Mac OS X 10.4
- Any version of php was tried and confirmed to experience major slowdown: Stock php from Mac OS X, all official php 4.3.x, 4.4.x
- Any recent version of apache, default configure and compile: apache 1.3.33, 2.0.55.

Apache configure line used :
/configure --enable-so --enable-modules=most --enable-mods-shared=max --enable-proxy --enable-ssl

Php configure line used :
./configure --with-apxs2=/usr/local/apache2/bin/apxs --enable-experimental-zts --with-mysql=/usr/local/mysql --with-fbsql --with-xml --enable-ftp --with-curl=/sw --with-zlib --with-png-dir=/sw --with-jpeg-dir=/sw --with-gd --with-ttf=/sw --with-freetype-dir=/sw --enable-track-vars --enable-trans-id --disable-debug

All options were striped down except mysql and --enable-track-vars --enable-trans-id --disable-debug with no more restult.

Expected result:
----------------
less than 1 second page generation time for the a test site using mambo CMS

Actual result:
--------------
8 to 15 second of page generation time. During this time, the actual apache thread that serves the request eats 100% of the cpu time.