[pLog-svn] __autoload very slow ...

Tue Oct 9 03:01:00 EDT 2007

Thanks, this is good work.

I also figured out the reason of the naming scheme of the Zend classes
a while ago, and while I think it's pretty smart, I also think that
the class names are pretty ugly :)

By the way, have you noticed if there is any impact with regards to
memory usage when loading the big array with all the class names and
paths?

Oscar

On 10/9/07, Mark Wu <markplace at gmail.com> wrote:
> BTW, now I know why Zend's class naming is so ugly. Becasue it is easier to
> implement __autoload feature.
>
> They use Zend_ABC_DEF as the class name, it easy for them to ask the
> __autoload() function to search ./Zend/ABC/DEF only, it can save a lof of
> time.
>
> Mark
>
> > -----Original Message-----
> > From: Mark Wu [mailto:markplace at gmail.com]
> > Sent: Tuesday, October 09, 2007 11:41 AM
> > To: 'LifeType Developer List'
> > Subject: RE: [pLog-svn] __autoload very slow ...
> >
> > Hi All:
> >
> > After the change with rev. 5979 & 5980. I think the
> > performance issue is solved.
> >
> > I just test the original lt_include scripts, auto load only
> > scripts and pre-defined class loader map scripts. The
> > performace of  "pre-defined class loader map scripts" is as
> > good as "original lt_include scripts".
> >
> > Now, windows lifetype developer can enjoy the autoload features, too.
> >
> > Regards, Mark
> >
> > > -----Original Message-----
> > > From: plog-svn-bounces at devel.lifetype.net
> > > [mailto:plog-svn-bounces at devel.lifetype.net] On Behalf Of Oscar
> > > Renalias
> > > Sent: Monday, October 08, 2007 8:12 PM
> > > To: LifeType Developer List
> > > Subject: Re: [pLog-svn] __autoload very slow ...
> > >
> > > I was wondering how long it will take people to test this...
> > > Not long :)
> > >
> > > We can create a pre-defined array that contains the
> > locations of all
> > > files. Although there's quite many of those, finding a single file
> > > should be pretty quick.
> > >
> > > But if it's a performance problem in windows, maybe there
> > isn't much
> > > we can do. All I can say is that I felt no performance increase or
> > > decrease in my OS X laptop, and OS X is not exactly known
> > for being a
> > > speed demon.
> > >
> > > On 10/8/07, Mark Wu <markplace at gmail.com> wrote:
> > > >
> > > >
> > > > Actually, I will suggest we revert to the old way +
> > > autoload new features.
> > > >
> > > > So, if developer know lifetype very well, then he can include the
> > > > lifetype related files by him self in front of each scripts.
> > > >
> > > > If he is a new developer, then he can enjoy the benifit
> > > from the new
> > > > autoload feature (With the pre-scan scripts array as I
> > suggested) .
> > > >
> > > > Mark
> > > >
> > > >
> > > >  ________________________________
> > > >  From: Mark Wu [mailto:markplace at gmail.com]
> > > > Sent: Monday, October 08, 2007 5:58 PM
> > > >
> > > > To: 'LifeType Developer List'
> > > > Subject: RE: [pLog-svn] __autoload very slow ...
> > > >
> > > >
> > > >
> > > > I just check the code, there are several stuffs will impact
> > > the performance:
> > > >
> > > > 1. The order of folders:
> > > >     - If the file is locate in the last folder, then the
> > > autload have
> > > > to check all the folders
> > > >
> > > > 2. The number of folders:
> > > >     -There are about 110 folders in the folder list array.
> > > I think it
> > > > is too much folders for autoload
> > > >
> > > > 3. The file I/O
> > > >     - It seems the file I/O under windws is much worse then
> > > > Unix/Linux, that why Oscar feel no big difference with autoload.
> > > >
> > > > For adapt the new autoload feature in lifetype with such
> > > big quantity
> > > > of folders, I think we should try to use the same skill
> > we used in
> > > > script checks.
> > > >
> > > > To generate a $include_script[$key] = $value; file for autoload.
> > > >
> > > > Then we just use array_key_exist to check the $key exist or
> > > not. Then
> > > > include the file.
> > > >
> > > > It will save a lot of time.
> > > >
> > > > Mark
> > > >
> > > >
> > > >  ________________________________
> > > >  From: Mark Wu [mailto:markplace at gmail.com]
> > > > Sent: Monday, October 08, 2007 5:36 PM
> > > > To: 'LifeType Developer List'
> > > > Subject: RE: [pLog-svn] __autoload very slow ...
> > > >
> > > >
> > > >
> > > >
> > > > I forgot to say this is the result of admin.php?op=newPost
> > > >
> > > > You can see there are over 7700 function call of file_exists().
> > > >
> > > > If each file_exists call() takes 1 ms. It will takes 15 seconds ..
> > > >
> > > > It is so amazing.
> > > >
> > > > Mark
> > > >
> > > >
> > > >  ________________________________
> > > >  From: Mark Wu [mailto:markplace at gmail.com]
> > > > Sent: Monday, October 08, 2007 5:23 PM
> > > > To: 'LifeType Developer List'
> > > > Subject: RE: [pLog-svn] __autoload very slow ...
> > > >
> > > >
> > > >
> > > > Hi All:
> > > >
> > > > I just attached my profiling file and the result with
> > > wincachegrined.
> > > > You can see the bottle neck is in file_exists.
> > > >
> > > > It takks about 12 seconds.
> > > >
> > > > wow ...
> > > >
> > > > Mark
> > > >
> > > >
> > > >
> > > >  ________________________________
> > > >  From: plog-svn-bounces at devel.lifetype.net
> > > > [mailto:plog-svn-bounces at devel.lifetype.net] On Behalf Of Mark Wu
> > > > Sent: Monday, October 08, 2007 4:16 PM
> > > > To: 'LifeType Developer List'
> > > > Subject: [pLog-svn] __autoload very slow ...
> > > >
> > > >
> > > >
> > > > Hi Oscar:
> > > >
> > > > I just test the new autoload under windows, the performace
> > > is very bad under
> > > > windows ( apache 2.2.4, PHP5 5.2.3 & Mysql 5.0)
> > > >
> > > > In original lt_include version, every request can finished
> > > within less 1-2
> > > > seconds.
> > > >
> > > > But, in new autoload version, every request takes almost
> > > 25-35 seconds to
> > > > show up the page ...
> > > >
> > > > I check the cpu loading, it always in 100%. It seems PHP
> > > just try search the
> > > > include files recursivelly
> > > >
> > > > It is really terrible ....
> > > >
> > > > Do I need to do any special setup in PHP.ini for autoload?
> > > >
> > > > Mark
> > > >
> > > >
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