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Posted by Brent Baisley on 10/24/05 22:13
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@cybercat.ca>
> To: <php-general@lists.php.net>
> Sent: Wednesday, September 14, 2005 9:00 AM
> Subject: [PHP] 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
p: 212.759.6400/800.759.0577
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