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Posted by "Nicolas Ross" on 10/24/05 23:30
I must point out also, that during this time, the httpd thread that servers
my request is taking 100% of cpu for the whole 8 or 10 seconds...
Thanks,
Nicolas
----- Original Message -----
From: "Brent Baisley" <brent@landover.com>
To: "Nicolas Ross" <rossnick-lists@cybercat.ca>
Cc: <php-general@lists.php.net>; "Shawn Moore" <shawn@heliumflash.com>;
"Atelier Fabien" <info@atelierfabien.be>
Sent: Monday, October 24, 2005 3:13 PM
Subject: Re: [PHP] php Slow with Mac OS X 10.4
>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
>
> --
> PHP General Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php
>
>
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