[PHP-BUG] Bug #55845 [NEW]: Iterator and ArrayAccess Interface poor perfomance than native array
From:
Operating system: Ubuntu Natty
PHP version: 5.3SVN-2011-10-04 (SVN)
Package: Performance problem
Bug Type: Bug
Bug description:Iterator and ArrayAccess Interface poor perfomance than native
array
Description:
Hi there,
I want to report that implements native interface for Iterator and
ArrayAccess, seriously damage cpu perfomance (compared to native array:
absolutely huge).
Use my attached-class for testing for 300 array records, then perfomance
suffered.
Test script:
---
?php
namespace Entity;
abstract class ListArray implements \Iterator, \ArrayAccess, \Countable,
\Serializable
{
private
$container = array();
final public function __construct($data = array())
{
$this-doConstruct($data);
}
function __clone() { }
protected function doConstruct($data)
{
$this-container = array_merge((array) $data, $this-container);
}
function __set($key, $val)
{
$this-container[$key] = $val;
}
public function rewind()
{
reset($this-container);
}
public function current()
{
return current($this-container);
}
public function key()
{
return key($this-container);
}
public function next()
{
next($this-container);
}
public function valid()
{
return (key($this-container) !== NULL);
}
public function offsetGet($offset)
{
return isset($this-container[$offset])? $this-container[$offset]
: NULL;
}
public function offsetSet($offset, $value)
{
if(is_null($offset))
{
$this-container [] = $value;
}
else
{
$this-container [$offset] = $value;
}
}
public function offsetExists($offset)
{
return isset($this-container[$offset]);
}
public function offsetUnset($offset)
{
unset($this-container[$offset]);
}
public function count()
{
static $count;
return ++$count;
}
public function filter($typ)
{
$result = array();
$this-rewind();
while($this-valid())
{
if(stripos($this-key(), $typ) !== FALSE) $result[$this-key()]
= $this-current();
$this-next();
}
return $result;
}
public function serialize()
{
$props = array();
foreach($this as $key = $val)
{
$props [$key] = $val;
}
return serialize(array($this-container, $props));
}
public function unserialize($data)
{
list($this-container, $props) = unserialize($data);
foreach($props as $key = $val)
{
$this-$key = $val;
}
}
}
Expected result:
Significant perfomance like native-array
Actual result:
--
Poor perfomance, absolutely different from native-array
--
Edit bug report at https://bugs.php.net/bug.php?id=55845edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=55845r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=55845r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=55845r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=55845r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=55845r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=55845r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=55845r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=55845r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=55845r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=55845r=support
Expected behavior:
https://bugs.php.net/fix.php?id=55845r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=55845r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=55845r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=55845r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=55845r=php4
Daylight Savings:https://bugs.php.net/fix.php?id=55845r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=55845r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=55845r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=55845r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=55845r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=55845r=mysqlcfg
[PHP-BUG] Bug #55739 [NEW]: possibility memory leak on namespace and spl_autoload_register
From:
Operating system: Ubuntu Natty Nerwhal
PHP version: 5.3SVN-2011-09-20 (snap)
Package: Performance problem
Bug Type: Bug
Bug description:possibility memory leak on namespace and spl_autoload_register
Description:
Hi,
I want to report (possible) bug that related to namespace and
spl_autoload_register.
Somehow, I cannot reclaim memory used (using unset) if I am using namespace
WITH
include(_once) or require(_once) (on multiple page call) compared than
using
multiple namespace on single page alone. I do not know if it is a bug or
perfomance issue.
I met the same case on spl_autoload_register. I compared using
include(_once) or
require(_once) against spl_autoload_register, and found the resource
(memory
usage) cannot be claimed.
so, that's all.
Test script:
---
namespace Abstraction;
$start = microtime('time');
$mem = memory_get_usage();
/*
* Untuk sementara, penggunaan namespace TIDAK BOLEH MENGIKUTSERTAKAN
include dan require,
* karena hal seperti ini menggunakan memory resource sangat tinggi. Hal
ini sepertinya adalah bug (memory leak).
* Kejadian serupa juga dapat ditemui pada penggunaan
spl_autoload_register.
*/
abstract class RequestAbstract
{
abstract public function server($key);
}
class RequestImpl {}
class NamespaceAbstract {}
namespace Http;
use \Abstraction;
class MyRequest extends Abstraction\RequestAbstract
{
public function server($key = '')
{
return new Request;
}
}
class RequestConcrete extends Abstraction\RequestImpl {}
class Response {}
$test3 = new Response;
$test4 = new MyRequest;
$test5 = new RequestConcrete;
$test6 = new Abstraction\RequestImpl;
$test7 = new Abstraction\NamespaceAbstract;
print_r($test3);
print_r($test4);
print_r($test5);
print_r($test6);
print_r($test7);
unset($test, $test3, $test4, $test5,$test6, $test7);
echo Elapsed: , microtime('time') - $start, Memory Usage: ,
memory_get_usage() - $mem;
// give result only consumed 156 bytes (compared than using include or
require)
Expected result:
Test script on singlepage namespace:
// give result only consumed 156 bytes (compared than using include or
require)
Test script on multiplepage namespae:
Expected: 156 bytes
Actual result:
--
Test script on singlepage namespace:
// give result only consumed 156 bytes (compared than using include or
require)
Test script on multiplepage namespae:
Actual: 1 KB (more or less)
--
Edit bug report at https://bugs.php.net/bug.php?id=55739edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=55739r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=55739r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=55739r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=55739r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=55739r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=55739r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=55739r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=55739r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=55739r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=55739r=support
Expected behavior:
https://bugs.php.net/fix.php?id=55739r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=55739r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=55739r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=55739r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=55739r=php4
Daylight Savings:https://bugs.php.net/fix.php?id=55739r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=55739r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=55739r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=55739r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=55739r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=55739r=mysqlcfg
