[PHP-DEV] PHP Performance in Apache: Multi-Process vs Multi-Threaded
Hi All, I have a few questions about the performance of PHP web applications *under load* and I would appreciate if there is anyone that would like to share their experiences in terms of any benchmarks or observations. *Background Information* In multi-process environments, such as FastCGI, Apache Prefork MPM etc, PHP needs to execute the MINIT and MSHUTDOWN functions for all loaded extensions on every request. In a multi-threaded environment, such as Apache Worker MPM, with Zend Thread Safety is enabled, PHP only needs to execute MINIT and MSHUTDOWN functions once for each extension and not each time a new thread is created to serve a request. It is also more expensive to create new processes than to create new threads. In one-on-one comparisons between scripts executed only once in ZTS mode and scripts executed once in non-ZTS mode, I noticed that the one in non-ZTS mode was slightly faster and this seems to be the main reason why most people go with the non-ZTS enabled setups. But the reason for this slight difference in speed is because of the differences in the data structure for globals for ZTS and non-ZTS modes. Other reasons people have cited for going with non-threaded setups include stability which I guess we should not really be concerned about if non-threadsafe extensions are excluded. Since it is generally more expensive to create new processes than new threads, I believe that under high load, php in ZTS mode (multi-threaded environment) will perform better than an identical setup in NTS mode (multi-process). *Problem* I noticed that Zend Server is using PHP in FastCGI mode (multi-process NTS) and I am contemplating setting up apache in worker mode (threaded mode) and compiling php in ZTS mode instead. Has anyone performed any load tests benchmarks comparing the two setups (Multi-Process vs Multi-Threaded)? Are there PHP extensions that cause issues in threaded environments that I should avoid? Are there any internals information or any other reasons why I should choose ZTS over NTS or vice versa? Any useful feedback will be highly appreciated. Thanks. -- °O° Good Enough is not good enough. To give anything less than your best is to sacrifice the gift. Quality First. Measure Twice. Cut Once. http://www.israelekpo.com/
[PHP-DEV] Re: [INTERNALS-WIN] Assistance Needed with config.w32 and .dsp scripts
Pierre and Pierrick, Thanks a lot once again for helping me out! I really really appreciate it. You have really helped out a lot of the windows PHP user space developers that could not use the extension. I also thank Kalle and Felipe for their contributions in reviewing the initial releases of the SOLR module for bugs and compatibility with C++ and Windows compilers. I am now able to compile it without any warnings. I will add your 4 names to the next release of the SOLR extension as the people that made the release happen. This has also paved way for the 1.0 release which I intentionally postponed until it was available for the windows platform. Once again thank you very much. You guys rock! On Sun, Nov 22, 2009 at 7:11 AM, Pierre Joye pierre@gmail.com wrote: hi, On Tue, Nov 17, 2009 at 10:26 PM, Israel Ekpo israele...@gmail.com wrote: Hi Everyone, My name is Israel Ekpo I am trying to compile the Solr extension on Windows XP using Visual Studio 2008 but I am getting compile errors. Current trunk should work fine as long as you have libxml, curl, iconv and zlibs deps installed. I also uploaded 5.3 vc9-x86 ts and nts version of solr here: http://downloads.php.net/pierre/ Cheers, -- Pierre http://blog.thepimp.net | http://www.libgd.org -- Good Enough is not good enough. To give anything less than your best is to sacrifice the gift. Quality First. Measure Twice. Cut Once.
Re: [PHP-DEV] Why is ereg being deprecated?
On Mon, Oct 12, 2009 at 1:28 PM, Derick Rethans der...@php.net wrote: On Mon, 12 Oct 2009, Mark Krenz wrote: Again, this isn't a debate on which is better, I only want to STRONGLY stress that I think its a big mistake to remove it in 6.0. The ereg library doesn't handle unicode so it can simply not work. If nobody simply wants to do the work to make sure ereg is ready for PHP 6 and unicode support, then you are not doing your job. I hate to call it a job because I'm sure that you all enjoy doing PHP development, but there are times when you have to bite the bullet and do the hard work because its your responsibility to do so. Patches welcome. Derick -- http://derickrethans.nl | http://ezcomponents.org | http://xdebug.org twitter: @derickr -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php PHP is the most popular web-development language and it would continue to remain in that position for a very long time. I don't think that if ereg is not longer bundled with PHP this will have any effect in the number of PHP users. There exists a very large number of PHP users around the world; however, there is a significantly smaller and more miniscual number of people who actually design and maintain PHP and its extensions. It is important to stress that the PHP language is maintained by VOLUNTEERS who are committed and dedicated to seeing that PHP continues to prosper while maintaining high quality. Change is something that most people struggle with. As Pierre Joye suggested, just because there are lot of people driving clunkers does not mean we have to keep using clunkers. If there exist a faster, better and more efficient alternative, please adapt. Respect is reciprocal; please be nice to these volunteers because not only are you not paying them but no one else is either. Removing ereg from PHP might seem Cold Turkey but at this time that is the wiser thing to do. It's time for the clunker to go. -- Good Enough is not good enough. To give anything less than your best is to sacrifice the gift. Quality First. Measure Twice. Cut Once.
Re: [PHP-DEV] Why is ereg being deprecated?
On Mon, Oct 12, 2009 at 3:14 PM, Mark Krenz m...@suso.org wrote: On Mon, Oct 12, 2009 at 05:55:25PM GMT, Carl P. Corliss [rabb...@gmail.com] said the following: Code Search of: eregi?(_replace)?\( lang:php shows ~123,000 results Code Search of: preg_(filter|grep|last_error|match_all|match|quote|replace_callback|replace|split)\( lang:php shows ~374,000 results Looks like preg_* functions are used more often than ereg* functions to me... I think everyone should read this as it will prove my point. Especially book #9 I have a O'Reilly Safari Books Online account and can search the content of many of the latest books, which I consider something more official than just doing a causual Google search, which can be misleading. The number 1 selling book on Amazon in the PHP category is PHP and MySQL Web Development (4th Edition) from 2008 by Luke Welling and Laura Thomson. There is no mention of preg_match and the book instead shows how to use ereg based functions. In fact, they do mention PCRE, but downplay it by saying that POSIX regexs are easier to use. I think any intelligent person would see this as a alarm that the PHP world isn't ready for ereg to be dropped or changed. You need far more time for the information to make its way through the PHP community. Going further through the list of Amazon's top selling PHP books we have: 2. The Essential Guide to Dreamweaver CS4 with CSS, Ajax, and PHP (Essentials) Ignore this as it isn't really covering PHP properly. 3. Regular Expression Pocket Reference: Regular Expressions: from 2008 This states that it covered PCRE expressions for PHP. So at least that's right. 4. Learning PHP, MySQL, and JavaScript: A Step-by-Step Guide to Creating Dynamic Websites from 2009 Uses examples written with preg_match 5. Web Database Applications with PHP and MySQL, 2nd Edition from 2004. Mentions PCRE but says that they will use POSIX expressions instead. 6. Head First PHP MySQL from 2008/2009 Talks about preg_match, mentions that ereg is removed in PHP 6. 7. PHP Cookbook from 2006 Has mixed examples, some using ereg and some using preg_match 8. Practical WebPractical Web 2.0 Applications with PHP Not on Safari 9. Programming PHP by Kevin Tatroe, Rasmus Lerdorf and Peter MacIntyre in 2006. Which may be considered the definitive guide to PHP since Rasmus is a co-author. Uses examples with both ereg and preg_match, BUT ereg is used first in the book and compromises the majority of the section called Regular Expressions. So here is an example of emphasis being placed on ereg being the more official functions to use. 10. Wicked Cool PHP: Real-World Scripts That Solve Difficult Problems Not on Safari So that's about 4 out of 7 the top selling books on PHP still strongly use ereg. I didn't find any mention in the books I read online about ereg going away. Some of them supported PCRE more than others. But obviously there is still a lot of use of the POSIX functions. These are best selling books on PHP. So there ARE A LOT of programmers out there that think that they are doing the right thing using ereg. Obviously books can't be the authoritative source for functions, but a lot of times they are used that way, especially when one of them was written by the author of the language. Duh! So there is my proof. Does anyone still want to dispute me that ereg is still heavily used and you'll make a lot of users angry if you don't give them the proper amount of time to make this transition? -- Mark S. Krenz IT Director Suso Technology Services, Inc. http://suso.org/ -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php If you are feeling this strongly about ereg, I would suggest you do one of the following: 1. Create a patch that contains a re-write and submit it for discussion to the internals mailing list. 2. If you are unable to do # 1. Hire or get a volunteer who can and is willing to create the patch for you. This will save us a lot of time and energy that is being dissipated/wasted in this discussion. You can also document the issue in the wiki to warn userspace PHP developers about the current situation. Again, please note that PHP is designed, developed and maintained by VOLUNTEERS. Please treat these volunteers with respect. -- Good Enough is not good enough. To give anything less than your best is to sacrifice the gift. Quality First. Measure Twice. Cut Once.
[PHP-DEV] Bug #49325 Error in domdocument-schemaValidate
This was actually not a bug with the PHP code.
The error was in the instance XML document.
I just closed the bug.
The contents of the element node did not conform to what is specified in
the XSD. After adjusting the contents of the instance XML document to
conform to the specifications of the XSD document, it worked as expected.
The original file is here :
http://israelekpo.com/php_bugs/NFe/43090803116611000198550011070
127.xml
The corrected version is here :
http://israelekpo.com/php_bugs/NFe/43090803116611000198550011070
127.correct.xml
PHP Code to verify success :
http://israelekpo.com/php_bugs/NFe/bug_49325.phps
?php
$xml = new DomDocument();
$xml-load('43090803116611000198550011070127.correct.xml');
$tempDom = new DOMDocument();
$tempDom-loadXML(utf8_encode($xml-saveXML()));
if ($tempDom-schemaValidate('nfe_v1.10.xsd'))
{
echo ok;
} else {
echo erro;
}
?
Expected result:
ok
Actual result:
--
ok
--
Good Enough is not good enough.
To give anything less than your best is to sacrifice the gift.
Quality First. Measure Twice. Cut Once.
Re: [PHP-DEV] Bug #49325 Error in domdocument-schemaValidate
On Mon, Oct 5, 2009 at 12:52 PM, David Zülke david.zue...@bitextender.comwrote: On 05.10.2009, at 18:11, Israel Ekpo wrote: This was actually not a bug with the PHP code. The error was in the instance XML document. I just closed the bug. That should probably be closed as bogus, not closed. - David Thanks David. It will do that. -- Good Enough is not good enough. To give anything less than your best is to sacrifice the gift. Quality First. Measure Twice. Cut Once.
Re: [PHP-DEV] Doc on the VM
On Fri, Oct 2, 2009 at 10:46 AM, Nicolai Scheer sc...@planetavent.dewrote:
Hi!
Mathieu Suen schrieb:
Hi,
I would like to know if there is some documentation on the different
layout of the array, object varaible ... in php.
Or were in the source can we read how the php VM reprensent those
entites?
At first, you should have a look at Zend/zend.h in the php source tree.
There you'll find the definition of a php variable, the zval struct:
struct _zval_struct {
/* Variable information */
zvalue_value value; /* value */
zend_uint refcount__gc;
zend_uchar type;/* active type */
zend_uchar is_ref__gc;
};
The content of the variable is:
typedef union _zvalue_value {
long lval; /* long value */
double dval;/* double value */
struct {
char *val;
int len;
} str;
HashTable *ht; /* hash table value */
zend_object_value obj;
} zvalue_value;
Since a php variable can contain any type php has to offer, this
representation was choosen in order to simplify access on the internal
side.
There's a bunch of macros for creating zvals, getting/setting
types/values, etc. so you don't need to do this by hand (of course, in
complex cases you have to).
Does this help?
greetings,
Nico
--
PHP Internals - PHP Runtime Development Mailing List
To unsubscribe, visit: http://www.php.net/unsub.php
Hello,
As Mathieu advised, taking a look at some of the source code would be very
helpful
You should also take a look at these files in the Zend folder of the PHP
source:
zend_object_handlers.c
zend_object_handlers.h
zend_objects.c
zend_objects.h
zend_objects_API.c
zend_objects_API.h
After that, I would advice that you grab a copy of Sara Golemon's book. It
was really helpful to me as well.
*http://www.amazon.com/Extending-Embedding-PHP-Sara-Golemon/dp/067232704X*
One similarity between arrays and objects is that they both use the
HashTable type to store their elements (for arrays) and properties (for
objects).
For objects (classes), however the class has to be made available during the
MINIT phase whereas for arrays that is not needed.
There are other similarities and differences but Sara Goleman's book will
definitely give you a head start and then you can figure out the rest as you
practice.
There are also differences between PHP 5.2 and 5.3, they use fifferent
versions of the Zend Engine (2.2 and 2.3 respectively) some members of the
zval struct have changed and you will need to use the macros to access some
of the members of these structs for compatibility reasons.
--
Good Enough is not good enough.
To give anything less than your best is to sacrifice the gift.
Quality First. Measure Twice. Cut Once.
Re: [PHP-DEV] Buildbot setup / do you want access to testing platform?
On Mon, Sep 28, 2009 at 1:55 PM, Hannes Magnusson hannes.magnus...@gmail.com wrote: First off, don't top-post :) On Sun, Sep 27, 2009 at 05:12, Israel Ekpo israele...@gmail.com wrote: Hi Hannes, I want to help out. What do I have to do to set it up and what will be my responsibilities after that. Your job would be to figure out the best way to do compile-testing on bunch of platforms, and run our test suite on those platforms (buildbot was the favorite of your predecessor, who unfortunately doesn't have the time right now). After having figuring that out you'd need to get it up and running on the various platforms (probably coordinating with Zoe, who knows the status of the run-tests 'framework' and could help you integrating the testing results in a readable manner). You would most definitely need to maintain the system for several years, so the better you are to help others understanding the system and sharing information the more chances you have of 'getting vacation' and piece quite when you need it ;) So, are you up for the job soldier? -Hannes Hi Hannes, Sorry for taking this long to respond. 1. I am ready for the challenge! 2. I would prefer to start with the Debian lenny server. Most of my experience is with Ubuntu and CentOS. Since Red Hat or CentOS is not one of the options, the Debian server will be one that I am most comfortable with working with as it is the closest one to Ubuntu. 3. After setting up the environment, I will attempt to replicate the set up on the other servers listed here http://wiki.php.net/internals/buildbot#operating_systems_available FreeBSD 6.4 is available on 80.82.121.132 FreeBSD 7.2 is available on 80.82.121.133 Debian lenny is available on 80.82.121.134 OpenBSD 4.5 is available on 80.82.121.135 NetBSD 5.0 is available on 80.82.121.136 4. I am not really familiar with the buildbot process so I have some questions . By test suites and run-tests you are referring to the make test option a developer has after compiling php, correct? 5. After setting up the environment successfully, I think the test results should be formatted as XML for easy digest by humans and onward transformation to other formats. *How I plan to implement this : 1. I will set up a web service so that the a post commit hook from the svn.php.net server can notify the build system immediately a commit is made to the repository. 2. This notification will get dropped into a queue and the target revision number will be checked out from SVN and compiled. Each revision number will be compiled separately in sequence. 3. If the compilation fails, then the error messages will be captured. If it passes, then the test suite will be applied. 4. The results will be captured and stored in the recommended format for consumption later. What do you think?* -- Good Enough is not good enough. To give anything less than your best is to sacrifice the gift. Quality First. Measure Twice. Cut Once.
[PHP-DEV] Re: [PECL-DEV] SVN Account Request: iekpo
Hey guys, Please don't forget my PECL and SVN account request. I am still waiting. On Mon, Sep 21, 2009 at 10:59 AM, Israel Ekpo israele...@gmail.com wrote: I have a php extension for Apache Solr that I would like to publish and introduce to the PHP community. Hannes Magnusson sent me here to this page to request an SVN account. I will need access to php-src/ext/solr and also phpdoc to create documentation for the extension. So, I would be very grateful if someone could grant me a PECL account (with username iekpo) with access to SVN and karma so that I can also add documentation to the manual. The Solr extension is a fast, light-weight, feature-rich library that allows userspace PHP developers to communicate effectively with Solr server instances. There is already built-in support for Apache Solr 1.4 There are a set of tools to add documents and make updates to the solr server. It also contains tools that allows you to build advanced queries to the server when searching for documents. There are also special objects that simplifies the sending of name-value requests to the server for searchs etc. This is the SolrParams class and all its child classes. I have created some userspace documentation here. The c space documentation is in the source code it self. http://www.israelekpo.com/solr/doc/ The extension itself is located here http://www.israelekpo.com/solr/php-solr.tar.gz There are some simple examples on how to add documents to the Solr index and query for them too. Please check it out and let me know what you think. Thanks. -- PECL development discussion Mailing List (http://pecl.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- Good Enough is not good enough. To give anything less than your best is to sacrifice the gift. Quality First. Measure Twice. Cut Once.
