DO NOT REPLY [Bug 29277] - Apache gets locked

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http://issues.apache.org/bugzilla/show_bug.cgi?id=29277

Apache gets locked





------- Additional Comments From trawick@apache.org  2004-05-28 15:08 -------
Best doc for a web server hang condition is to run pstack against each web
server process and post the results.

There are two known issues which you may be suffering from:

1) ssl-related child process crash introduced in 2.0.49

See PR27945.  Here is the fix for that problem:

http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/ssl/ssl_engine_io.c?r1=1.121&r2=1.122

2) hang after crash when using pthread accept mutex (the default on Solaris)

(this is not at all obvious from your truss, but pstack of all children when in
this hung state should give more definitive info)

Very possibly the child process crash (segmentation fault) resulted in screwing
up the accept mutex, which in turn hung the server.

Try switching to non-default accept mutex type, by adding this to httpd.conf:

AcceptMutex fcntl

This has nothing to do with the child process crash, but it should resolve web
server hangs that occur after a crash due to loss of accept mutex.

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