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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 50247] httpd hangs on poll(...) and read(...)
Date Wed, 09 Mar 2011 13:27:09 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=50247

tal.yalon@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW
            Version|2.2.8                       |2.2.16
           Severity|normal                      |critical

--- Comment #3 from tal.yalon@gmail.com 2011-03-09 08:27:06 EST ---
Hi there,

Although I don't know anything about Alex's bug, we experience something that
looks like a bug that might be very similar so I thought to add more info here
rather than opening a new one.

The httpd in question is 2.2.16 running on EC2.

We see that after a while (10 minutes) of a significant load, some of the
worker processes get hang on poll().

This is the stacktrace from one of the processes that are in this state:

#0  0x00007f76fa70c748 in poll () from /lib64/libc.so.6
#1  0x00007f76fabe2822 in apr_wait_for_io_or_timeout () from
/usr/lib64/libapr-1.so.0
#2  0x00007f76fabdd2da in apr_socket_recv () from /usr/lib64/libapr-1.so.0
#3  0x00007f76fc0dfddd in ap_lingering_close ()
#4  0x00007f76fc0eaa7e in ?? ()
#5  0x00007f76fc0ead1a in ?? ()
#6  0x00007f76fc0eadd0 in ?? ()
#7  0x00007f76fc0eb908 in ap_mpm_run ()
#8  0x00007f76fc0c54fb in main ()

Please let me know if there's any more information I can provide - this problem
is obviously a major concern to us.

Thanks,
Tal

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