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From "Sai Jai Ganesh Gurubaran" <sguru...@cordys.com>
Subject [users@httpd] Apache process hanging
Date Mon, 30 Oct 2006 04:40:26 GMT
Hi All, 

we notice that some time (not consistent) some of the Apache process
hang.

They start taking memory and do nothing.

 

Here is the strace of one such process

"strace -p 5762"

 

 

futex(0x9dfe690, FUTEX_WAKE, 1)         = 0

 gettimeofday({1161960021, 481837}, NULL) = 0

 clock_gettime(CLOCK_REALTIME, 0xbfff94e0) = -1 ENOSYS (Function not
implemented)

 gettimeofday({1161960021, 481924}, NULL) = 0

 futex(0xa2adea6c, FUTEX_WAIT, 84065, {0, 249913000}) = -1 ETIMEDOUT
(Connection timed out)

 futex(0x9dfe690, FUTEX_WAKE, 1)         = 0

 gettimeofday({1161960021, 741879}, NULL) = 0

 clock_gettime(CLOCK_REALTIME, 0xbfff94e0) = -1 ENOSYS (Function not
implemented)

 gettimeofday({1161960021, 741962}, NULL) = 0

 futex(0xa2adea6c, FUTEX_WAIT, 84067, {0, 249917000}) = -1 ETIMEDOUT
(Connection timed out)

 futex(0x9dfe690, FUTEX_WAKE, 1)         = 0

 gettimeofday({1161960022, 1931}, NULL)  = 0

 clock_gettime(CLOCK_REALTIME, 0xbfff94e0) = -1 ENOSYS (Function not
implemented)

 gettimeofday({1161960022, 2037}, NULL)  = 0

 futex(0xa2adea6c, FUTEX_WAIT, 84069, {0, 249894000}) = -1 ETIMEDOUT
(Connection timed out)

 futex(0x9dfe690, FUTEX_WAKE, 1)         = 0

 gettimeofday({1161960022, 261859}, NULL) = 0

 clock_gettime(CLOCK_REALTIME, 0xbfff94e0) = -1 ENOSYS (Function not
implemented)

 gettimeofday({1161960022, 261938}, NULL) = 0

 futex(0xa2adea6c, FUTEX_WAIT, 84071, {0, 249921000}) = -1 ETIMEDOUT
(Connection timed out)

 futex(0x9dfe690, FUTEX_WAKE, 1)         = 0

 gettimeofday({1161960022, 521857}, NULL) = 0

 clock_gettime(CLOCK_REALTIME, 0xbfff94e0) = -1 ENOSYS (Function not
implemented)

 gettimeofday({1161960022, 521940}, NULL) = 0

futex(0xa2adea6c, FUTEX_WAIT, 84073, {0, 2499170

 ..

..

.

.

 

It is repeating the same thing.

 

Any clue on where to look?

 

Thanks and Regards,

Sai Jai Ganesh

 

 


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