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From Pawel <pzl...@mp.pl>
Subject httpd hangs ?
Date Tue, 13 Mar 2012 14:03:02 GMT
Hello,

After upgrading to 2.2.22 (from 2.2.19 ) my apache stop responding to 
network queries.
It happens on quite busy system (~200 workers ),  ~ one per day.
one apache process is  in "D" state.

Apache is running on 3.2.2 kernel, ,  gcc 4.5.3-r1 p1.0, pie-0.4.5


Is it know bug?
Anyone can see that behavior ?

Thanks
Pawel


*www      19504  0.0  0.0 141084 19828 ?        Ds   Mar09   0:44 
/usr/local/apache22/bin/httpd -k start*
www      12773  0.3  0.0      0     0 ?        Z    09:40   0:01  \_ 
[httpd] <defunct>
www      12815  0.4  0.0      0     0 ?        Z    09:41   0:01  \_ 
[httpd] <defunct>
www      12844  0.2  0.0      0     0 ?        Z    09:42   0:00  \_ 
[httpd] <defunct>
www      12876  0.2  0.0      0     0 ?        Z    09:42   0:01  \_ 
[httpd] <defunct>
www      12896  0.2  0.0      0     0 ?        Z    09:43   0:00  \_ 
[httpd] <defunct>
www      12918  0.2  0.0      0     0 ?        Z    09:44   0:00  \_ 
[httpd] <defunct>
www      12946  0.2  0.0      0     0 ?        Z    09:44   0:00  \_ 
[httpd] <defunct>
www      12968  0.2  0.0      0     0 ?        Z    09:45   0:00  \_ 
[httpd] <defunct>
www      13001  0.5  0.0      0     0 ?        Z    09:45   0:01  \_ 
[httpd] <defunct>
www      13020  0.5  0.0      0     0 ?        Z    09:46   0:01  \_ 
[httpd] <defunct>
www      13036  2.2  0.0      0     0 ?        Z    09:46   0:04  \_ 
[httpd] <defunct>
www      13057  0.5  0.0      0     0 ?        Z    09:47   0:00  \_ 
[httpd] <defunct>
www      13077  2.7  0.0      0     0 ?        Z    09:47   0:03  \_ 
[httpd] <defunct>
www      13105  1.3  0.0      0     0 ?        Z    09:48   0:01  \_ 
[httpd] <defunct>
www      13135  1.1  0.0 159492 24208 ?        SL   09:48   0:00  \_ 
/usr/local/apache22/bin/httpd -k start
www      13171  0.5  0.0 156436 21408 ?        SL   09:49   0:00  \_ 
/usr/local/apache22/bin/httpd -k start
www      13210  0.0  0.0 141084  9628 ?        R    09:49   0:00  \_ 
/usr/local/apache22/bin/httpd -k start

strace (one message per ~ 30 seconds )
clone(child_stack=0, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x73be642dda10) = 13701
clone(child_stack=0, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x73be642dda10) = 13720
clone(child_stack=0, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x73be642dda10) = 13740
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 12773
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 12815
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 12844
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 12876
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 12896
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 12918
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 12946
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 12968
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13001
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13020
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13036
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13057
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13077
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13105
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13135
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13171
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13210
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13245
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13267
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13291
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13310
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13331
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13351
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13372
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13409
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13431
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13449
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13475
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13502
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13564
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, 
NULL) = 13588
wait4(-1, 0x7ad781767684, WNOHANG|WSTOPPED, NULL) = 0
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
write(2, "[Tue Mar 13 10:00:01 2012] [info"..., 179) = 179
clone(child_stack=0, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x73be642dda10) = 13763
--- {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13606, si_status=0, 
si_utime=55, si_stime=24} (Child exited) ---
clone(child_stack=0, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x73be642dda10) = 13782
--- {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13639, si_status=0, 
si_utime=38, si_stime=14} (Child exited) ---
clone(child_stack=0, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x73be642dda10) = 13810
--- {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13740, si_status=0, 
si_utime=89, si_stime=34} (Child exited) ---
clone(child_stack=0, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x73be642dda10) = 13846
clone(child_stack=0, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x73be642dda10) = 13870


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