Edit report at http://bugs.php.net/bug.php?id=40286&edit=1
ID: 40286
Comment by: jason at backup-technology dot co dot uk
Reported by: gabriel at oxeva dot fr
Summary: PHP fastcgi with PHP_FCGI_CHILDREN don't kill
children when parent is killed
Status: No Feedback
Type: Bug
Package: CGI related
Operating System: Linux 2.6
PHP Version: 5.2.0+
Assigned To: dmitry
Block user comment: N
New Comment:
We're experiencing this issue with 5.2.14 and also 5.3.3.
On 5.2.14 the strace of the hanging processes with parent ID 1 left
behind show this:
Process 21330 attached - interrupt to quit
accept(0,
It hangs on that and if we interrupt it shows:
Process 21330 attached - interrupt to quit
accept(0, <unfinished ...>
Running a gdb (with debug symbols) and attaching to the process and
running "bt" we get:
(gdb) bt
#0 0x000000320c8d4530 in __accept_nocancel () from /lib64/libc.so.6
#1 0x000000000062abe8 in fcgi_accept_request (req=0x7fff3cb385b0) at
/usr/src/debug/php-5.2.14/sapi/cgi/fastcgi.c:957
#2 0x000000000062c14f in main (argc=1, argv=0x7fff3cb3a758) at
/usr/src/debug/php-5.2.14/sapi/cgi/cgi_main.c:1703
On the 5.3.3 (with no debug symbols) we have the following:
(gdb) bt
#0 0x00000038936d4530 in __accept_nocancel () from /lib64/libc.so.6
#1 0x000000000063e0c3 in ?? ()
#2 0x000000000063ad2a in ?? ()
#3 0x000000389361d994 in __libc_start_main () from /lib64/libc.so.6
#4 0x0000000000421ec9 in _start ()
Hope this helps.
Jason.
Previous Comments:
------------------------------------------------------------------------
[2009-07-26 21:55:21] machochito at gmail dot com
I have the same problem on CentOS 5.3 with php 5.2.9.
Have someone solution to this problem?
Thanks.
------------------------------------------------------------------------
[2009-07-22 20:45:21] bgross at mcw dot edu
... on second thought, after looking at my php.ini again, I think the
major change was due to adding the line "session.gc_probability = 1". I
believe this is set to "session.gc_probability = 0" by default in Debian
------------------------------------------------------------------------
[2009-07-22 20:14:41] bgross at mcw dot edu
I'm not familiar with the inner-workings PHP, so I'm sorry if this is
not relevant.
I was experiencing a problem with php-cgi processes staying around and
filling up my memory. After I added the line "cgi.fix_pathinfo=1" to my
php.ini, the problem went away.
I'm using PHP FastCGI 5.2.6 with Lighttpd 1.4.19 on Debian 5.0.2
Hope that's helpful
------------------------------------------------------------------------
[2009-07-02 03:41:27] porjo38 at yahoo dot com dot au
The php 5.3.0 changelog states the following:
"Fixed bug #40286 (PHP fastcgi with PHP_FCGI_CHILDREN don't kill
children when parent is killed). (Dmitry)"
I've just compiled php 5.3.0 under Centos5.3 with Apache2.2.3 +
mod_fcgid2.2-4.
The issue is still occuring for me. When I restart Apache, I usually end
up with a bunch of php-cgi process with ppid of 1 (init), although it
doesn't happen every time.
------------------------------------------------------------------------
[2009-05-16 03:43:15] scripts at topducks dot com
I'm using php5.2.9 mod_fcgid, not using children method.
Whenever I restart apache I get orphaned php processes.
Without the cron job to check and kill them off they would waste a lot
of memory.
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