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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 42829] - graceful restart with multiple listeners using prefork MPM can result in hung processes on FreeBSD
Date Wed, 05 Sep 2007 14:50:28 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=42829


apache-bugzilla@krustev.net changed:

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------- Additional Comments From apache-bugzilla@krustev.net  2007-09-05 07:50 -------
I'm also seeing this on Debian testing on x86 . 

Looking at the error logs the problem has appeared  before 2.2.4. I see the 
message:

[Fri Nov 24 09:25:09 2006] [notice] Graceful restart requested, doing restart
[Fri Nov 24 09:25:09 2006] [error] (9)Bad file descriptor: apr_socket_accept: 
(client socket)
[Fri Nov 24 09:25:23 2006] [notice] Apache configured -- resuming normal 
operations


At this time the apache version on testing was 2.2.3 (so was on this box)

Recently, after the upgrade to 2.2.4 and the fix to CVE-2007-3304 I'm also 
seeing this:

[Thu Aug 23 13:00:14 2007] [notice] Graceful restart requested, doing restart
[Thu Aug 23 13:00:14 2007] [notice] (10)No child processes: cannot send signal 
10 to pid 19020 (non-child or already dead)
[Thu Aug 23 13:00:14 2007] [error] (9)Bad file descriptor: apr_socket_accept: 
(client socket)
[Thu Aug 23 13:00:17 2007] [notice] Digest: generating secret for digest 
authentication ...
[Thu Aug 23 13:00:21 2007] [notice] Digest: done
[Thu Aug 23 13:00:21 2007] [notice] Apache/2.2.4 (Debian) mod_ssl/2.2.4 
OpenSSL/0.9.8e DAV/2 configured -- resuming normal operations


I've noticed that after such unsuccessfull gracefull restart the number of the 
remaining alive children stands almost constant(about 32-33, I've got 
MinSpareServers set to 30). I've started 200 parallel requests for a big file, 
but the number of the active children remained about 30, although I've got 
MaxClients set to 256.

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