Bug #61240 [Com]: curl_multi_select cause cpu load 100%
Edit report at https://bugs.php.net/bug.php?id=61240&edit=1
ID: 61240
Comment by: niniwzw at qq dot com
Reported by:niniwzw at qq dot com
Summary:curl_multi_select cause cpu load 100%
Status: Open
Type: Bug
Package:cURL related
Operating System: window xp
PHP Version:5.3.10
Block user comment: N
Private report: N
New Comment:
the best solution work without the curl_multi_select may be this:
http://lxr.php.net/";);
curl_setopt($ch1, CURLOPT_HEADER, 0);
curl_setopt($ch2, CURLOPT_URL, "http://www.php.net/";);
curl_setopt($ch2, CURLOPT_HEADER, 0);
//create the multiple cURL handle
$mh = curl_multi_init();
//add the two handles
curl_multi_add_handle($mh,$ch1);
curl_multi_add_handle($mh,$ch2);
$active = null;
$exec_count = 0;
do {
$mrc = curl_multi_exec($mh, $active);
usleep(1);
$exec_count++;
} while ($mrc == CURLM_CALL_MULTI_PERFORM || ($active && $mrc == CURLM_OK));
//close the handles
curl_multi_remove_handle($mh, $ch1);
curl_multi_remove_handle($mh, $ch2);
curl_multi_close($mh);
var_dump($exec_count);
?>
I scan the source code of curl_multi_select, there was no change from php
5.2.17 to 5.3.10, may be it's the problem of libcurl(curl_multi_fdset, fuction)
Previous Comments:
[2012-04-03 16:27:47] bompus at gmail dot com
Related to 60790 and 61141
--------
[2012-03-02 08:51:47] niniwzw at qq dot com
Description:
---
>From manual page: http://www.php.net/function.curl-multi-exec
---
In the document of curl_multi_exec, has a example in the document.
it can run in php 5.2, but php 5.3 and php 5.4 cause cpu load 100%.
the example is:
http://lxr.php.net/";);
curl_setopt($ch1, CURLOPT_HEADER, 0);
curl_setopt($ch2, CURLOPT_URL, "http://www.php.net/";);
curl_setopt($ch2, CURLOPT_HEADER, 0);
//create the multiple cURL handle
$mh = curl_multi_init();
//add the two handles
curl_multi_add_handle($mh,$ch1);
curl_multi_add_handle($mh,$ch2);
$active = null;
//execute the handles
do {
$mrc = curl_multi_exec($mh, $active);
} while ($mrc == CURLM_CALL_MULTI_PERFORM);
while ($active && $mrc == CURLM_OK) {
if (curl_multi_select($mh) != -1) {
do {
$mrc = curl_multi_exec($mh, $active);
} while ($mrc == CURLM_CALL_MULTI_PERFORM);
}
}
//close the handles
curl_multi_remove_handle($mh, $ch1);
curl_multi_remove_handle($mh, $ch2);
curl_multi_close($mh);
?>
--
Edit this bug report at https://bugs.php.net/bug.php?id=61240&edit=1
[PHP-BUG] Bug #61240 [NEW]: curl_multi_select cause cpu load 100%
From:
Operating system: window xp
PHP version: 5.3.10
Package: cURL related
Bug Type: Bug
Bug description:curl_multi_select cause cpu load 100%
Description:
---
>From manual page: http://www.php.net/function.curl-multi-exec
---
In the document of curl_multi_exec, has a example in the document.
it can run in php 5.2, but php 5.3 and php 5.4 cause cpu load 100%.
the example is:
http://lxr.php.net/";);
curl_setopt($ch1, CURLOPT_HEADER, 0);
curl_setopt($ch2, CURLOPT_URL, "http://www.php.net/";);
curl_setopt($ch2, CURLOPT_HEADER, 0);
//create the multiple cURL handle
$mh = curl_multi_init();
//add the two handles
curl_multi_add_handle($mh,$ch1);
curl_multi_add_handle($mh,$ch2);
$active = null;
//execute the handles
do {
$mrc = curl_multi_exec($mh, $active);
} while ($mrc == CURLM_CALL_MULTI_PERFORM);
while ($active && $mrc == CURLM_OK) {
if (curl_multi_select($mh) != -1) {
do {
$mrc = curl_multi_exec($mh, $active);
} while ($mrc == CURLM_CALL_MULTI_PERFORM);
}
}
//close the handles
curl_multi_remove_handle($mh, $ch1);
curl_multi_remove_handle($mh, $ch2);
curl_multi_close($mh);
?>
--
Edit bug report at https://bugs.php.net/bug.php?id=61240&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=61240&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=61240&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=61240&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=61240&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=61240&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=61240&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=61240&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=61240&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=61240&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=61240&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=61240&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=61240&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=61240&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=61240&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=61240&r=php4
Daylight Savings:https://bugs.php.net/fix.php?id=61240&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=61240&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=61240&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=61240&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=61240&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=61240&r=mysqlcfg
