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Date: 01 May 2003 16:37:45 -0700
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Subject: Re: [PHP-DEV] xmldoc() takes ages
From: waboring@3gstech.com (Walt Boring)

BTW tst.xml and foo_3.xml are the same file.

Walt

On Thu, 2003-05-01 at 16:31, Walt Boring wrote:
> Howdy,
>   I have a 12Meg xml file that I am trying to get PHP 4.3.1 to parse
> using libxml2 with xmldoc(), and it takes ~ 11 minutes to do this on a
> P4 1.8Hhz box.
> 
> The same operation in libxml2's python interface takes 6 seconds.
> 
> here is my code.  Any ideas why it takes 11 minutes?  12Megs of valid
> xml is large, but not 11 minutes worth of large.  
> 
> <?php
> 
> //my includes here
> set_time_limit( 345600 );
> 
> $xml = implode('', file("foo_3.xml"));
> debug_message("parsing xml file of len = ".strlen($xml));
> 
> $doc = xmldoc( $xml );
> //it takes 11 minutes to get here!
> debug_message("GOT THE DOC");
> exit;
> 
> ?>
> 
> The output
> [waboring@hemna bin]$ time php -f xml.php
> PHP Notice: 
> DEBUG:(16:04:00):/home/waboring/devel/freemap/bin/xml.php::(11) parsing
> xml file of len = 11223576
>  in /home/waboring/devel/freemap/lib/util.inc on line 784
> PHP Notice: 
> DEBUG:(16:13:55):/home/waboring/devel/freemap/bin/xml.php::(16) GOT THE
> DOC
>  in /home/waboring/devel/freemap/lib/util.inc on line 784
> <div style="float: left;"> TOTAL EXECUTION TIME: 595.5</div>
> 
> real    9m56.163s
> user    8m57.790s
> sys     0m4.280s
> 
> 
> 
> python tst.py that comes with libxml2-python package.
> 
> 
> #!/usr/bin/python -u
> import sys
> import libxml2
> 
> # Memory debug specific
> libxml2.debugMemory(1)
> 
> doc = libxml2.parseFile("tst.xml")
> if doc.name != "tst.xml":
>     print "doc.name failed"
>     sys.exit(1)
> root = doc.children
> print "doc.name = "+root.name
> 
> #if root.name != "doc":
> #    print "root.name failed"
> #    sys.exit(1)
> child = root.children
> #if child.name != "foo":
> #    print "child.name failed"
> #    sys.exit(1)
> doc.freeDoc()
> 
> # Memory debug specific
> libxml2.cleanupParser()
> if libxml2.debugMemory(1) == 0:
>     print "OK"
> else:
>     print "Memory leak %d bytes" % (libxml2.debugMemory(1))
>     libxml2.dumpMemory()
> 
> output of
> [waboring@hemna bin]$ time ./tst.py
> doc.name = MAP
> OK
> 
> real    0m3.413s
> user    0m2.860s
> sys     0m0.390s
> 
> Ok, so I'm not 100% sure that the python libxml2.parseFile() does
> EXACTLY the same php's xmldoc(), but I don't think xmldoc() should take
> 11 minutes.  It also sucks up a ton of ram.
> 
> Walt
>