#50737 [NEW]: stream_set_blocking creates high cpu usage
From: jason at lentink dot net
Operating system: Linux
PHP version: 5.2.12
PHP Bug Type: Sockets related
Bug description: stream_set_blocking creates high cpu usage
Description:
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When using stream_set_blocking on a stream will create a huge load on
cpu. When using this function it uses up to 50% of the cpu. When not
using this function it will only use 0.1% cpu usage.
Reproduce code:
---------------
$this->_socket = fsockopen($str, $port, $errno, $errstr);
stream_set_blocking($this->_socket, 0); // non blocking
Expected result:
----------------
An socket which will be opened fast. in a non-blocking mode.
Actual result:
--------------
An open socket. But the cpu use is enormous.
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Edit bug report at http://bugs.php.net/?id=50737&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=50737&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=50737&r=trysnapshot53
Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=50737&r=trysnapshot60
Fixed in SVN: http://bugs.php.net/fix.php?id=50737&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50737&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=50737&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=50737&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=50737&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=50737&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=50737&r=support
Expected behavior: http://bugs.php.net/fix.php?id=50737&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=50737&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=50737&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=50737&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50737&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=50737&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=50737&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=50737&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=50737&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=50737&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=50737&r=mysqlcfg
Thread (9 messages)
- jason at lentink dot net