note 47166 deleted from function.usleep by betz
| From: | betz@php.net | Date: | Fri, 05 Nov 2004 01:07:07 +0000 |
| Subject: | note 47166 deleted from function.usleep by betz | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-80108@lists.php.net to get a copy of this message | ||
Note Submitter: brainstar at gmail dot com
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usleep() in windows using PHP 5.0.2
It seems that usleep() in this config has a minimum sleep time of around 10 milliseconds. Thats
10,000 microseconds.
ie:
<?
set_time_limit(10);
while(1) {
echo ".";
usleep(1);
ob_flush();
}
?>
On windows this only results in about a thousand periods being displayed before the timelimit kills
the script. The CPU use is not hit at all. On any other platform this would try to send almost 10
billion periods and probably take a CPU hit in the process ;-)
This is worlds better than sleep(), but still doesn't hold a candle to usleep() on other
platforms.
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Reason: useless note