Test: sockets blocking vs. not
Normal sockets in PHP are blocking. Does using a select manually improve things for just a single socket? Note this test depends on external things, and so is fairly inaccurate.
Run this test again Return to test menuHistorical Results
Based on (1) saved test runs, The test labeled "blocking" was (on average) the faster by 0.0123 seconds, (1.152% faster)
The blocking test took 1.0519 seconds.
The non-blocking test took 1.0641 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 294,233 loops for a total of 5,884,660 runs.
- Line execution difference (0.000002) milliseconds.
- Avg difference (0.000) milliseconds per 294,233 loops.
- Total difference 12.26 milliseconds for 5,884,660 loops
The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) milliseconds. The lower and the closer together there values are the more accurate the results are.
Code
The first test, "blocking", was:
$fp = fsockopen('127.0.0.1', 80, $errno, $error); fwrite($fp, 'GET / HTTP/1.1' . "\r\n" . 'Host: localhost' . "\r\n\r\n"); $GLOBALS['dummy2'] = fread($fp, 100); fclose($fp);
The second test, "non-blocking", was:
$fp = fsockopen('127.0.0.1', 80, $errno, $error); stream_set_blocking($fp, false); $r = array($fp); $w = array($fp); $e = array(); if (stream_select($e, $w, $e, 2)) fwrite($fp, 'GET / HTTP/1.1' . "\r\n" . 'Host: localhost' . "\r\n\r\n"); if (stream_select($r, $e, $e, 2)) $GLOBALS['dummy2'] = fread($fp, 100); fclose($fp);