#50312 [Opn]: Opening an https using fopen consumes all cpu time

From: Date: Fri, 27 Nov 2009 18:37:24 +0000
Subject: #50312 [Opn]: Opening an https using fopen consumes all cpu time
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-145133@lists.php.net to get a copy of this message 
 ID:               50312
 User updated by:  kvr at centrum dot cz
 Reported By:      kvr at centrum dot cz
 Status:           Open
 Bug Type:         HTTP related
 Operating System: Linux, Debian
 PHP Version:      5.3SVN-2009-11-27 (snap)
 New Comment:

Yes, it looks related. The patch looks quite logical but I'm not sure
if it would work with stream_select() functions.

Anyway, thank you and sorry the bug report was not clear from the
first description.


Previous Comments:
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[2009-11-27 18:24:29] rasmus@php.net

This was reported before and a patch supplied but Pierre blew it off. 

See bug #46685

The patch there looks sane.  I'll try to get some time this weekend to

play with it.

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[2009-11-27 18:14:41] kvr at centrum dot cz

php (or OpenSSL library) doesn't handle the error code EAGAIN and
instead of waiting for data using select() or poll(), it calls read()
again and again, taking all the cpu time.

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[2009-11-27 18:04:20] jani@php.net

Yes, it's the OpenSSL lib doing the read, what's the bug here?

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[2009-11-27 17:56:41] kvr at centrum dot cz

Yes, I tried it exactly as written in your example.

The php version was the latest: ~/iphp/bin/php -v
PHP 5.3.2-dev (cli) (built: Nov 27 2009 17:39:57)
Copyright (c) 1997-2009 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2009 Zend Technologies

Did you check the strace output (or whatever tool your system
provides to trace program syscalls) ? Could you please attach it?

------------------------------------------------------------------------

[2009-11-27 17:48:47] jani@php.net

Well, did  you try the short example I provided? That site isn't
exactly "slow" but since you're not providing anything to work with
that's what I tested and that works..

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    http://bugs.php.net/50312

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