I haven't had any problems with slowdowns on 10.4. Usually when there
are slowdowns on the Mac like you indicate, it has something to do
with DNS lookups being performed. Apple seems to be having a hard
time getting this right. You could problem find a ton of posts on
very slow ssh on the Apple forums that have to do with DNS.
Have you figured out what the computer is doing when a page is taking
that long? You mention it seems to point to an IO problem, have you
used iostat (or fs_usage) to verify it's disk IO? My first guess is
something with the network and you have to wait for a lookup,
response or timeout, which is why it's taking at a minimum 10
seconds. Again, I would check DNS first, the most obvious being
Apache resolving IP addresses for the log (don't do it).
On Oct 24, 2005, at 12:44 PM, Nicolas Ross wrote:
Just a little follow-up to my own post.
From the latest expriments I've done with a fresh install of OS X
10.4 (with the latest 10.4.3 beta update), it seems to point to an
IO problem.
My test site uses mambo as a CMS, and I've inclued collecting of
microseconds timestamps at key points of the index file, and
whenever it includes some files it slows down. It's worse when
there are several nested includes. One other point is the mysql db
connection.
I must recall to all that when called from the cli, it's ok. Only
when called from apache (1 or 2), dso or static and only on Mac OS
X 10.4 (it's ok with 10.3 and 10.2) I expericed a major slowdown.
For all tests, all config is the same, libraries and binaries where
all the same on all systems.
I've tried compiling php as cgi also, it helps a little bit, but
it's still too slow...
Thanks for any hints...
Nicolas
----- Original Message ----- From: "Nicolas Ross" <rossnick-
lists@xxxxxxxxxxx>
To: <php-general@xxxxxxxxxxxxx>
Sent: Wednesday, September 14, 2005 9:00 AM
Subject: php Slow with Mac OS X 10.4
Hi all !
Here, we've got several Mac computer acting as servers to serve
many kinds
of sites. One of wich was running, until the middle of august, Mac
OS X
10.2. It was then with apache 1.3.x, and php 4.3.10 dso. All
things were
"normal".
At the middle of august, we upgraded to Mac OS X 10.4 (re-install
from
scratch). Now, it's with apache2, php 4.4.0 dso. Now, everthing
that is php
is slow as hell. A page that took normally less than a second to
render, now
takes up to 15 ! Yes, fifteen seconds. That depends of course on
the general
load of the server, but it nevers goes down under 8 to 10 seconds.
The machine is a dual G4, with 1.5 gigs of ram.
Now, if I go to the command line, in the directory of this site
and type
"php index.php", it renders in about 1 to 1.5 seconds, wich is
acceptable.
I did tests with :
- apache 1, php 4, php 5, all static or dso
- apache 2, php 4, php 5, dso
- php 4.3, php 4.4
- Stock php that comes with Tiger
- Stock apache that comes with Tiger
- Different compile options with mysql as --with-mysql
and --with-mysql=/usr/local/mysql
- I've also tried with and without zend optimizer, turck mmcache.
All with the same results.
In my test case, there is mysql involved, but it's irrelevent to the
problem, since the mysql is an another machine and is the same all
trough my
tests.
Now, in a different server room, we have a set of 3 xserves
cluster node
dual g5 with 4 gigs of ram each. One of them was upgraded to Mac
OS X 10.4
(server) and the other 2 are still with 10.3.
If I take the same setup (same compile options, same versions) on
these
machines, the exact same site is slow as hell on the 10.4, and
lightning
fast on 10.3.
Here's my php configure command :
./configure --with-apxs2=/usr/local/apache2/bin/apxs --with-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
This is really begins to bugs me...
Any hints ?
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Brent Baisley
Systems Architect
Landover Associates, Inc.
Search & Advisory Services for Advanced Technology Environments
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