Re: PHP 4.0 Bug #7113: count and pointers
| From: | Dhr. CaPS Cappert | Date: | Thu, 12 Oct 2000 11:21:38 +0000 |
| Subject: | Re: PHP 4.0 Bug #7113: count and pointers | ||
| References: | 1 | Groups: | php.dev |
| Request: | Send a blank email to php-dev+get-34568@lists.php.net to get a copy of this message | ||
Lets make a comparison,
you write code that doesn't make sense and you expect php to behave
correctly?
Its like when you punch a guy for no reason and expect him to shake your
hand and leave..
By difference 1 sec .. I meant
withoutref took 0.6 seconds..
whereas withref took 2.1 seconds..
-- CaPS
On Tue, 10 Oct 2000, Wico de Leeuw wrote:
> At 13:02 12-10-00 +0200, Dhr. CaPS Cappert wrote:
> >I tried this .. however I assigned $blah to &$DATA and did a count($blah);
> >The difference is about one second.. (granted, still to much..)
>
> Hiya
>
> 1. It's not right... should have a reason (and faster is almost always better)
> 2. My test-machine isn't that fast the you realy feel the diff
> wait one sec or wat almost 25 secs
> and the file in now "only" 8 meg may be much bigger in the future
> i don't think it will get faster then :)
>
> Greetz,
>
> Wico
>
>
> >Bear in mind that your code doesn't make sense. I don't see why
> >this is such a problem for you.
> >
> >-- CaPS
> >
> >On Tue, 10 Oct 2000, Wico de Leeuw wrote:
> >
> > > At 02:35 10-10-00 -0700, Lars Torben Wilson wrote:
> > > >wico@cnh.nl writes:
> > > > > From: wico@cnh.nl
> > > > > Operating system: linux
> > > > > PHP version: 4.0 Latest CVS (10/10/2000)
> > > > > PHP Bug Type: Performance problem
> > > > > Bug description: count and pointers
> > > > >
> > > > > Hiya
> > > > >
> > > > > $ADLIB_FILE is a file, size = 9mb
> > > > >
> > > > > $ADLIB_DATA = file($ADLIB_FILE);
> > > > > $ADLIB_COUNT = count($ADLIB_DATA);
> > > > > echo time() - $test . " seconden<BR>\n\n";
> > > > > die();
> > > > >
> > > > > takes 17 secs
> > > > >
> > > > > $ADLIB_DATA = file($ADLIB_FILE);
> > > > > $ADLIB_COUNT = count(&$ADLIB_DATA);
> > > > > echo time() - $test . " seconden<BR>\n\n";
> > > > > die();
> > > > > this takes 27 secs?
> > > > >
> > > > > shouldn't this be faster the the first one?
> > > > >
> > > > > Greetz,
> > > > >
> > > > > Wico
> > > >
> > > >I just tried this with a 10MB text file and the following functions,
> > > >running each one 5 times:
> > > >
> > > >$file = file('/home/torben/INBOX');
> > > >
> > > >function with_ref() {
> > > > global $file;
> > > > $count = count(&$file);
> > > > echo "$count<br>\n";
> > > >}
> > > >
> > > >function without_ref() {
> > > > global $file;
> > > > $count = count($file);
> > > > echo "$count<br>\n";
> > > >}
> > > >
> > > >The first one runs 5 times in 0.00146 seconds; the second takes 9.0146
> > > >seconds to run 5 times. This is with the latest CVS.
> > >
> > > I guess this explains that something is really wrong
> > >
> > > >Perhaps there is something in the file loading itself that is causing
> > > >the problem? For instance, when I was testing this just now, I had to
> > > >abort one run, which left an httpd running full-bore and eating
> > > >massive megabytes--then I ran another test, and my numbers went all
> > > >screwy, since the earlier invocation hadn't hit its 30-second limit
> > > >and was still either loading or counting. I had to restart Apache to
> > > >get things evened out--could something similar be happening to you?
> > >
> > > My apache uses 60 meg when loading a file into an array this is the normal
> > > behavior of large array
> > > Some thime ago i submited a bug report about array overhead being very big
> > >
> > > I did my test about 10 times with and without the pointer
> > > With pointer is just verry slow without you won;t even notice is doing
> > > something with the array
> > > is just guess the somthing wrong with my or phps logic about pointers
> > >
> > > Greetz,
> > >
> > > Wico
> > >
> > >
> > > >--
> > > >+----------------------------------------------------------------+
> > > >|Torben Wilson <torben@php.net> Netmill iTech|
> > > >|http://www.coastnet.com/~torben
> > > >http://www.netmill.fi|
> > > >|Ph: 1 250 383-9735 torben@netmill.fi|
> > > >+----------------------------------------------------------------+
> > >
> > >
> > > --
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