Apache's “OPTIONS * HTTP/1.0” running 100% CPU - Runaway httpd processIs Apache stalled? /server-status shows over 240 requests like “OPTIONS * HTTP/1.0” 200 - “-” “Apache (internal dummy connection)”What can cause Apache HTTPD to use 100% CPU indefinitelyemond process running at 100%How to avoid Apache “options * http/1.0”Hung Apache Processes after POSTHigh CPU from httpd processApache HTTPD process cumulative cpu timeOPTIONS * HTTP/1.0 in access_logApache 2.2 eventually using all memory (worker mpm)Apache status says stopped but still httpd process runninghttpd processes cpu spike to 100%+ every xx seconds
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Apache's “OPTIONS * HTTP/1.0” running 100% CPU - Runaway httpd process
Is Apache stalled? /server-status shows over 240 requests like “OPTIONS * HTTP/1.0” 200 - “-” “Apache (internal dummy connection)”What can cause Apache HTTPD to use 100% CPU indefinitelyemond process running at 100%How to avoid Apache “options * http/1.0”Hung Apache Processes after POSTHigh CPU from httpd processApache HTTPD process cumulative cpu timeOPTIONS * HTTP/1.0 in access_logApache 2.2 eventually using all memory (worker mpm)Apache status says stopped but still httpd process runninghttpd processes cpu spike to 100%+ every xx seconds
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;
I have this recurring issue where an httpd processes will randomly start running at 100% CPU. Often other httpd processes will join in, and it will continue until I restart Apache. Oddly, the thing it's running 100% CPU on is "OPTIONS * HTTP/1.0". Here's the output from one of these:
9-0 38787 1/9/391 C 103.14 1323 7 0.0 0.08 4.11 ::1 www.mysite.com OPTIONS * HTTP/1.0
CPU is at 103.14% and it's been 1323 seconds since its last request. It's also stuck in 'C' - closing connection state.
Here's another case where other processes join in running 100% CPU:
0-0 12792 0/33/64 W 95.73 1097 0 0.0 0.10 0.39 66.68.237.216 www.mysite.com POST /page_a.php HTTP/1.1
9-0 12795 1/6/15 C 94.42 1174 0 0.0 0.03 0.07 ::1 www.myserver.com OPTIONS * HTTP/1.0
19-0 12986 0/4/41 W 95.67 1011 0 0.0 0.03 0.24 81.237.216.111 www.mysite.com POST /page_b.php HTTP/1.1
20-0 12720 0/10/10 W 94.32 1220 0 0.0 0.03 0.03 187.184.103.218 www.mysite.com POST /page_a.php HTTP/1.1
My setup is that this is on OS X Lion 10.4.7. I'm running Apache2 with PHP 5.3. Server Version: Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8r DAV/2 PHP/5.3.10 with Suhosin-Patch
Some potentially relevant http.conf settings:
MaxRequestsPerChild 100000
Timeout 300
KeepAlive On
KeepAliveTimeout 8
MaxKeepAliveRequests 100
When I sample the runaway processes, I see each of them show _spin_lock and kevent like so:
Sort by top of stack, same collapsed (when >= 5):
_spin_lock$VARIANT$mp (in libsystem_c.dylib) 4358
kevent (in libsystem_kernel.dylib) 2179
Here is some of the non-repeating Apple code I see:
Call graph:
2413 Thread_1080146 DispatchQueue_1: com.apple.main-thread (serial)
+ 2413 start (in httpd) + 52 [0x10f364794]
+ 2413 main (in httpd) + 4045 [0x10f37048d]
+ 2413 ap_mpm_run (in httpd) + 1740 [0x10f3aaabc]
+ 2413 perform_idle_server_maintenance (in httpd) + 703 [0x10f3aa38f]
+ 2413 make_child (in httpd) + 435 [0x10f3aa003]
+ 2413 child_main (in httpd) + 1831 [0x10f3a9e47]
+ 2413 clean_child_exit (in httpd) + 49 [0x10f3a8d31]
+ 2413 apr_pool_destroy (in libapr-1.0.dylib) + 52 [0x10f45761b]
+ 2413 ??? (in libapr-1.0.dylib) load address 0x10f44b000 + 0xb7b4 [0x10f4567b4]
+ 2413 php_apache_child_shutdown (in libphp5.so) + 17 [0x10fa3842f]
+ 2413 php_module_shutdown_wrapper (in libphp5.so) + 9 [0x10f97021d]
+ 2413 php_module_shutdown (in libphp5.so) + 35 [0x10f970167]
+ 2413 zend_shutdown (in libphp5.so) + 57 [0x10f9c0692]
+ 2413 zend_hash_destroy (in libphp5.so) + 53 [0x10f9cb19a]
+ 2413 destroy_op_array (in libphp5.so) + 271 [0x10f9b91c0]
+ 2413 _efree (in libphp5.so) + 52 [0x10f9a6312]
+ 2413 _zend_mm_free_canary_int (in libphp5.so) + 473 [0x10f9db899]
+ 2413 free (in libsystem_c.dylib) + 71 [0x7fff8f86170e]
+ 2413 szone_size_try_large (in libsystem_c.dylib) + 37 [0x7fff8f8240f9]
+ 2413 _spin_lock$VARIANT$mp (in libsystem_c.dylib) + 30,25,... [0x7fff8f86336e,0x7fff8f863369,...]
2413 Thread_1080153 DispatchQueue_2: com.apple.libdispatch-manager (serial)
2413 _dispatch_mgr_thread (in libdispatch.dylib) + 54 [0x7fff908fc31a]
2413 _dispatch_mgr_invoke (in libdispatch.dylib) + 923 [0x7fff908fd78a]
2413 kevent (in libsystem_kernel.dylib) + 10 [0x7fff8ed047e6]
And then stuff like this:
0x10f4ce000 - 0x10f4d0ff7 mod_reqtimeout.so (??? - ???) <035F872B-8196-3CCE-A4D0-AA8D5C1550EC> /usr/libexec/apache2/mod_reqtimeout.so
0x10f4d4000 - 0x10f4d8ff7 mod_ext_filter.so (??? - ???) <F33A3409-BFBA-3C8F-9FC9-C1BBC17DBE3F> /usr/libexec/apache2/mod_ext_filter.so
0x10f4dd000 - 0x10f4eaff7 mod_include.so (??? - ???) <70E541B9-A864-3FE1-AB85-EBF632FFD376> /usr/libexec/apache2/mod_include.so
0x10f4ef000 - 0x10f4f2ff7 mod_filter.so (??? - ???) <2093EE45-E335-3B36-A6BA-6EA4EB7E483C> /usr/libexec/apache2/mod_filter.so
0x10f4f6000 - 0x10f4f8ff7 mod_substitute.so (??? - ???) <9ED1AB37-EE13-39DC-AB97-98A2B39555B0> /usr/libexec/apache2/mod_substitute.so
0x10f4fc000 - 0x10f501ff7 mod_deflate.so (??? - ???) <E334FEA5-BB4E-36BE-A364-DCE248793345> /usr/libexec/apache2/mod_deflate.so
0x10f506000 - 0x10f50bfff mod_log_config.so (??? - ???) <61EA3051-8D4A-3A00-B7BC-C68E18CA9479> /usr/libexec/apache2/mod_log_config.so
0x10f511000 - 0x10f512fef mod_log_forensic.so (??? - ???) <06654BB4-CA2A-3D70-B759-12191119E5C7> /usr/libexec/apache2/mod_log_forensic.so
0x10f516000 - 0x10f516ff7 mod_logio.so (??? - ???) <A3CE3AED-D5FE-3947-8CEB-0A8F4C534E86> /usr/libexec/apache2/mod_logio.so
0x10f51a000 - 0x10f51aff7 mod_env.so (??? - ???) <DE58A08A-C6C9-307B-A077-03A9F1AA14C5> /usr/libexec/apache2/mod_env.so
0x10f51e000 - 0x10f524fff mod_mime_magic.so (??? - ???) <1737F398-6315-31B4-B8B4-57F590F07268> /usr/libexec/apache2/mod_mime_magic.so
0x10f529000 - 0x10f52aff7 mod_cern_meta.so (??? - ???) <B0D4FF96-C96D-3F3A-AECD-431F22A998FA> /usr/libexec/apache2/mod_cern_meta.so
0x10f52e000 - 0x10f52ffff mod_expires.so (??? - ???) <FE97E6F0-3B84-3CAC-8873-3B1525142041> /usr/libexec/apache2/mod_expires.so
0x10f533000 - 0x10f536ff7 mod_headers.so (??? - ???) <5701D330-D777-3AAF-AEEF-F02D067F851E> /usr/libexec/apache2/mod_headers.so
0x10f53b000 - 0x10f53cfff mod_ident.so (??? - ???) <5FDFBB79-3A0C-3439-BF71-74E6A3A4B7AC> /usr/libexec/apache2/mod_ident.so
0x10f540000 - 0x10f542ff7 mod_usertrack.so (??? - ???) <09F36BB5-4F8D-339B-AA52-5FA23A946837> /usr/libexec/apache2/mod_usertrack.so
0x10f546000 - 0x10f547fff mod_setenvif.so (??? - ???) <D312073B-0320-3810-9535-3AB8EBF83659> /usr/libexec/apache2/mod_setenvif.so
0x10f54b000 - 0x10f54cff7 mod_version.so (??? - ???) <4BF2E21C-E452-340E-A6B4-196DBD731CA8> /usr/libexec/apache2/mod_version.so
0x10f550000 - 0x10f566fff mod_proxy.so (??? - ???) <0169F3B2-A81A-3E23-92FE-8E9B92C38795> /usr/libexec/apache2/mod_proxy.so
0x10f56e000 - 0x10f576ff7 mod_proxy_http.so (??? - ???) <F5B55152-D3D1-34AE-A95A-029F01476A54> /usr/libexec/apache2/mod_proxy_http.so
0x10f57c000 - 0x10f57efff mod_proxy_scgi.so (??? - ???) <DFD46BF1-F69D-383B-8B33-5273DD8037E4> /usr/libexec/apache2/mod_proxy_scgi.so
0x10f583000 - 0x10f589ff7 mod_proxy_balancer.so (??? - ???) <BC9C283D-8852-3016-8142-96A5675956FA> /usr/libexec/apache2/mod_proxy_balancer.so
I can post more details as requested.
apache-2.2 php httpd mac-osx-server process
asked May 26 '12 at 15:27
Thomas AdamsThomas Adams
243
add a comment |
I have this recurring issue where an httpd processes will randomly start running at 100% CPU. Often other httpd processes will join in, and it will continue until I restart Apache. Oddly, the thing it's running 100% CPU on is "OPTIONS * HTTP/1.0". Here's the output from one of these:
9-0 38787 1/9/391 C 103.14 1323 7 0.0 0.08 4.11 ::1 www.mysite.com OPTIONS * HTTP/1.0
CPU is at 103.14% and it's been 1323 seconds since its last request. It's also stuck in 'C' - closing connection state.
Here's another case where other processes join in running 100% CPU:
0-0 12792 0/33/64 W 95.73 1097 0 0.0 0.10 0.39 66.68.237.216 www.mysite.com POST /page_a.php HTTP/1.1
9-0 12795 1/6/15 C 94.42 1174 0 0.0 0.03 0.07 ::1 www.myserver.com OPTIONS * HTTP/1.0
19-0 12986 0/4/41 W 95.67 1011 0 0.0 0.03 0.24 81.237.216.111 www.mysite.com POST /page_b.php HTTP/1.1
20-0 12720 0/10/10 W 94.32 1220 0 0.0 0.03 0.03 187.184.103.218 www.mysite.com POST /page_a.php HTTP/1.1
My setup is that this is on OS X Lion 10.4.7. I'm running Apache2 with PHP 5.3. Server Version: Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8r DAV/2 PHP/5.3.10 with Suhosin-Patch
Some potentially relevant http.conf settings:
MaxRequestsPerChild 100000
Timeout 300
KeepAlive On
KeepAliveTimeout 8
MaxKeepAliveRequests 100
When I sample the runaway processes, I see each of them show _spin_lock and kevent like so:
Sort by top of stack, same collapsed (when >= 5):
_spin_lock$VARIANT$mp (in libsystem_c.dylib) 4358
kevent (in libsystem_kernel.dylib) 2179
Here is some of the non-repeating Apple code I see:
Call graph:
2413 Thread_1080146 DispatchQueue_1: com.apple.main-thread (serial)
+ 2413 start (in httpd) + 52 [0x10f364794]
+ 2413 main (in httpd) + 4045 [0x10f37048d]
+ 2413 ap_mpm_run (in httpd) + 1740 [0x10f3aaabc]
+ 2413 perform_idle_server_maintenance (in httpd) + 703 [0x10f3aa38f]
+ 2413 make_child (in httpd) + 435 [0x10f3aa003]
+ 2413 child_main (in httpd) + 1831 [0x10f3a9e47]
+ 2413 clean_child_exit (in httpd) + 49 [0x10f3a8d31]
+ 2413 apr_pool_destroy (in libapr-1.0.dylib) + 52 [0x10f45761b]
+ 2413 ??? (in libapr-1.0.dylib) load address 0x10f44b000 + 0xb7b4 [0x10f4567b4]
+ 2413 php_apache_child_shutdown (in libphp5.so) + 17 [0x10fa3842f]
+ 2413 php_module_shutdown_wrapper (in libphp5.so) + 9 [0x10f97021d]
+ 2413 php_module_shutdown (in libphp5.so) + 35 [0x10f970167]
+ 2413 zend_shutdown (in libphp5.so) + 57 [0x10f9c0692]
+ 2413 zend_hash_destroy (in libphp5.so) + 53 [0x10f9cb19a]
+ 2413 destroy_op_array (in libphp5.so) + 271 [0x10f9b91c0]
+ 2413 _efree (in libphp5.so) + 52 [0x10f9a6312]
+ 2413 _zend_mm_free_canary_int (in libphp5.so) + 473 [0x10f9db899]
+ 2413 free (in libsystem_c.dylib) + 71 [0x7fff8f86170e]
+ 2413 szone_size_try_large (in libsystem_c.dylib) + 37 [0x7fff8f8240f9]
+ 2413 _spin_lock$VARIANT$mp (in libsystem_c.dylib) + 30,25,... [0x7fff8f86336e,0x7fff8f863369,...]
2413 Thread_1080153 DispatchQueue_2: com.apple.libdispatch-manager (serial)
2413 _dispatch_mgr_thread (in libdispatch.dylib) + 54 [0x7fff908fc31a]
2413 _dispatch_mgr_invoke (in libdispatch.dylib) + 923 [0x7fff908fd78a]
2413 kevent (in libsystem_kernel.dylib) + 10 [0x7fff8ed047e6]
And then stuff like this:
0x10f4ce000 - 0x10f4d0ff7 mod_reqtimeout.so (??? - ???) <035F872B-8196-3CCE-A4D0-AA8D5C1550EC> /usr/libexec/apache2/mod_reqtimeout.so
0x10f4d4000 - 0x10f4d8ff7 mod_ext_filter.so (??? - ???) <F33A3409-BFBA-3C8F-9FC9-C1BBC17DBE3F> /usr/libexec/apache2/mod_ext_filter.so
0x10f4dd000 - 0x10f4eaff7 mod_include.so (??? - ???) <70E541B9-A864-3FE1-AB85-EBF632FFD376> /usr/libexec/apache2/mod_include.so
0x10f4ef000 - 0x10f4f2ff7 mod_filter.so (??? - ???) <2093EE45-E335-3B36-A6BA-6EA4EB7E483C> /usr/libexec/apache2/mod_filter.so
0x10f4f6000 - 0x10f4f8ff7 mod_substitute.so (??? - ???) <9ED1AB37-EE13-39DC-AB97-98A2B39555B0> /usr/libexec/apache2/mod_substitute.so
0x10f4fc000 - 0x10f501ff7 mod_deflate.so (??? - ???) <E334FEA5-BB4E-36BE-A364-DCE248793345> /usr/libexec/apache2/mod_deflate.so
0x10f506000 - 0x10f50bfff mod_log_config.so (??? - ???) <61EA3051-8D4A-3A00-B7BC-C68E18CA9479> /usr/libexec/apache2/mod_log_config.so
0x10f511000 - 0x10f512fef mod_log_forensic.so (??? - ???) <06654BB4-CA2A-3D70-B759-12191119E5C7> /usr/libexec/apache2/mod_log_forensic.so
0x10f516000 - 0x10f516ff7 mod_logio.so (??? - ???) <A3CE3AED-D5FE-3947-8CEB-0A8F4C534E86> /usr/libexec/apache2/mod_logio.so
0x10f51a000 - 0x10f51aff7 mod_env.so (??? - ???) <DE58A08A-C6C9-307B-A077-03A9F1AA14C5> /usr/libexec/apache2/mod_env.so
0x10f51e000 - 0x10f524fff mod_mime_magic.so (??? - ???) <1737F398-6315-31B4-B8B4-57F590F07268> /usr/libexec/apache2/mod_mime_magic.so
0x10f529000 - 0x10f52aff7 mod_cern_meta.so (??? - ???) <B0D4FF96-C96D-3F3A-AECD-431F22A998FA> /usr/libexec/apache2/mod_cern_meta.so
0x10f52e000 - 0x10f52ffff mod_expires.so (??? - ???) <FE97E6F0-3B84-3CAC-8873-3B1525142041> /usr/libexec/apache2/mod_expires.so
0x10f533000 - 0x10f536ff7 mod_headers.so (??? - ???) <5701D330-D777-3AAF-AEEF-F02D067F851E> /usr/libexec/apache2/mod_headers.so
0x10f53b000 - 0x10f53cfff mod_ident.so (??? - ???) <5FDFBB79-3A0C-3439-BF71-74E6A3A4B7AC> /usr/libexec/apache2/mod_ident.so
0x10f540000 - 0x10f542ff7 mod_usertrack.so (??? - ???) <09F36BB5-4F8D-339B-AA52-5FA23A946837> /usr/libexec/apache2/mod_usertrack.so
0x10f546000 - 0x10f547fff mod_setenvif.so (??? - ???) <D312073B-0320-3810-9535-3AB8EBF83659> /usr/libexec/apache2/mod_setenvif.so
0x10f54b000 - 0x10f54cff7 mod_version.so (??? - ???) <4BF2E21C-E452-340E-A6B4-196DBD731CA8> /usr/libexec/apache2/mod_version.so
0x10f550000 - 0x10f566fff mod_proxy.so (??? - ???) <0169F3B2-A81A-3E23-92FE-8E9B92C38795> /usr/libexec/apache2/mod_proxy.so
0x10f56e000 - 0x10f576ff7 mod_proxy_http.so (??? - ???) <F5B55152-D3D1-34AE-A95A-029F01476A54> /usr/libexec/apache2/mod_proxy_http.so
0x10f57c000 - 0x10f57efff mod_proxy_scgi.so (??? - ???) <DFD46BF1-F69D-383B-8B33-5273DD8037E4> /usr/libexec/apache2/mod_proxy_scgi.so
0x10f583000 - 0x10f589ff7 mod_proxy_balancer.so (??? - ???) <BC9C283D-8852-3016-8142-96A5675956FA> /usr/libexec/apache2/mod_proxy_balancer.so
I can post more details as requested.
apache-2.2 php httpd mac-osx-server process
asked May 26 '12 at 15:27
Thomas AdamsThomas Adams
243
I ran into a similar problem once on FreeBSD. See /server-status shows over 240 requests like “OPTIONS * HTTP/1.0” 200 - “-” “Apache (internal dummy connection)” . The trigger was filesystem snapshots, which momentarily suspended writes to the filesystem so that the system could take a filesystem snapshot. Is your filesystem healthy? Anything unusual on your filesystem?
– Stefan Lasiewski
May 27 '12 at 18:13
add a comment |
I have this recurring issue where an httpd processes will randomly start running at 100% CPU. Often other httpd processes will join in, and it will continue until I restart Apache. Oddly, the thing it's running 100% CPU on is "OPTIONS * HTTP/1.0". Here's the output from one of these:
9-0 38787 1/9/391 C 103.14 1323 7 0.0 0.08 4.11 ::1 www.mysite.com OPTIONS * HTTP/1.0
CPU is at 103.14% and it's been 1323 seconds since its last request. It's also stuck in 'C' - closing connection state.
Here's another case where other processes join in running 100% CPU:
0-0 12792 0/33/64 W 95.73 1097 0 0.0 0.10 0.39 66.68.237.216 www.mysite.com POST /page_a.php HTTP/1.1
9-0 12795 1/6/15 C 94.42 1174 0 0.0 0.03 0.07 ::1 www.myserver.com OPTIONS * HTTP/1.0
19-0 12986 0/4/41 W 95.67 1011 0 0.0 0.03 0.24 81.237.216.111 www.mysite.com POST /page_b.php HTTP/1.1
20-0 12720 0/10/10 W 94.32 1220 0 0.0 0.03 0.03 187.184.103.218 www.mysite.com POST /page_a.php HTTP/1.1
My setup is that this is on OS X Lion 10.4.7. I'm running Apache2 with PHP 5.3. Server Version: Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8r DAV/2 PHP/5.3.10 with Suhosin-Patch
Some potentially relevant http.conf settings:
MaxRequestsPerChild 100000
Timeout 300
KeepAlive On
KeepAliveTimeout 8
MaxKeepAliveRequests 100
When I sample the runaway processes, I see each of them show _spin_lock and kevent like so:
Sort by top of stack, same collapsed (when >= 5):
_spin_lock$VARIANT$mp (in libsystem_c.dylib) 4358
kevent (in libsystem_kernel.dylib) 2179
Here is some of the non-repeating Apple code I see:
Call graph:
2413 Thread_1080146 DispatchQueue_1: com.apple.main-thread (serial)
+ 2413 start (in httpd) + 52 [0x10f364794]
+ 2413 main (in httpd) + 4045 [0x10f37048d]
+ 2413 ap_mpm_run (in httpd) + 1740 [0x10f3aaabc]
+ 2413 perform_idle_server_maintenance (in httpd) + 703 [0x10f3aa38f]
+ 2413 make_child (in httpd) + 435 [0x10f3aa003]
+ 2413 child_main (in httpd) + 1831 [0x10f3a9e47]
+ 2413 clean_child_exit (in httpd) + 49 [0x10f3a8d31]
+ 2413 apr_pool_destroy (in libapr-1.0.dylib) + 52 [0x10f45761b]
+ 2413 ??? (in libapr-1.0.dylib) load address 0x10f44b000 + 0xb7b4 [0x10f4567b4]
+ 2413 php_apache_child_shutdown (in libphp5.so) + 17 [0x10fa3842f]
+ 2413 php_module_shutdown_wrapper (in libphp5.so) + 9 [0x10f97021d]
+ 2413 php_module_shutdown (in libphp5.so) + 35 [0x10f970167]
+ 2413 zend_shutdown (in libphp5.so) + 57 [0x10f9c0692]
+ 2413 zend_hash_destroy (in libphp5.so) + 53 [0x10f9cb19a]
+ 2413 destroy_op_array (in libphp5.so) + 271 [0x10f9b91c0]
+ 2413 _efree (in libphp5.so) + 52 [0x10f9a6312]
+ 2413 _zend_mm_free_canary_int (in libphp5.so) + 473 [0x10f9db899]
+ 2413 free (in libsystem_c.dylib) + 71 [0x7fff8f86170e]
+ 2413 szone_size_try_large (in libsystem_c.dylib) + 37 [0x7fff8f8240f9]
+ 2413 _spin_lock$VARIANT$mp (in libsystem_c.dylib) + 30,25,... [0x7fff8f86336e,0x7fff8f863369,...]
2413 Thread_1080153 DispatchQueue_2: com.apple.libdispatch-manager (serial)
2413 _dispatch_mgr_thread (in libdispatch.dylib) + 54 [0x7fff908fc31a]
2413 _dispatch_mgr_invoke (in libdispatch.dylib) + 923 [0x7fff908fd78a]
2413 kevent (in libsystem_kernel.dylib) + 10 [0x7fff8ed047e6]
And then stuff like this:
0x10f4ce000 - 0x10f4d0ff7 mod_reqtimeout.so (??? - ???) <035F872B-8196-3CCE-A4D0-AA8D5C1550EC> /usr/libexec/apache2/mod_reqtimeout.so
0x10f4d4000 - 0x10f4d8ff7 mod_ext_filter.so (??? - ???) <F33A3409-BFBA-3C8F-9FC9-C1BBC17DBE3F> /usr/libexec/apache2/mod_ext_filter.so
0x10f4dd000 - 0x10f4eaff7 mod_include.so (??? - ???) <70E541B9-A864-3FE1-AB85-EBF632FFD376> /usr/libexec/apache2/mod_include.so
0x10f4ef000 - 0x10f4f2ff7 mod_filter.so (??? - ???) <2093EE45-E335-3B36-A6BA-6EA4EB7E483C> /usr/libexec/apache2/mod_filter.so
0x10f4f6000 - 0x10f4f8ff7 mod_substitute.so (??? - ???) <9ED1AB37-EE13-39DC-AB97-98A2B39555B0> /usr/libexec/apache2/mod_substitute.so
0x10f4fc000 - 0x10f501ff7 mod_deflate.so (??? - ???) <E334FEA5-BB4E-36BE-A364-DCE248793345> /usr/libexec/apache2/mod_deflate.so
0x10f506000 - 0x10f50bfff mod_log_config.so (??? - ???) <61EA3051-8D4A-3A00-B7BC-C68E18CA9479> /usr/libexec/apache2/mod_log_config.so
0x10f511000 - 0x10f512fef mod_log_forensic.so (??? - ???) <06654BB4-CA2A-3D70-B759-12191119E5C7> /usr/libexec/apache2/mod_log_forensic.so
0x10f516000 - 0x10f516ff7 mod_logio.so (??? - ???) <A3CE3AED-D5FE-3947-8CEB-0A8F4C534E86> /usr/libexec/apache2/mod_logio.so
0x10f51a000 - 0x10f51aff7 mod_env.so (??? - ???) <DE58A08A-C6C9-307B-A077-03A9F1AA14C5> /usr/libexec/apache2/mod_env.so
0x10f51e000 - 0x10f524fff mod_mime_magic.so (??? - ???) <1737F398-6315-31B4-B8B4-57F590F07268> /usr/libexec/apache2/mod_mime_magic.so
0x10f529000 - 0x10f52aff7 mod_cern_meta.so (??? - ???) <B0D4FF96-C96D-3F3A-AECD-431F22A998FA> /usr/libexec/apache2/mod_cern_meta.so
0x10f52e000 - 0x10f52ffff mod_expires.so (??? - ???) <FE97E6F0-3B84-3CAC-8873-3B1525142041> /usr/libexec/apache2/mod_expires.so
0x10f533000 - 0x10f536ff7 mod_headers.so (??? - ???) <5701D330-D777-3AAF-AEEF-F02D067F851E> /usr/libexec/apache2/mod_headers.so
0x10f53b000 - 0x10f53cfff mod_ident.so (??? - ???) <5FDFBB79-3A0C-3439-BF71-74E6A3A4B7AC> /usr/libexec/apache2/mod_ident.so
0x10f540000 - 0x10f542ff7 mod_usertrack.so (??? - ???) <09F36BB5-4F8D-339B-AA52-5FA23A946837> /usr/libexec/apache2/mod_usertrack.so
0x10f546000 - 0x10f547fff mod_setenvif.so (??? - ???) <D312073B-0320-3810-9535-3AB8EBF83659> /usr/libexec/apache2/mod_setenvif.so
0x10f54b000 - 0x10f54cff7 mod_version.so (??? - ???) <4BF2E21C-E452-340E-A6B4-196DBD731CA8> /usr/libexec/apache2/mod_version.so
0x10f550000 - 0x10f566fff mod_proxy.so (??? - ???) <0169F3B2-A81A-3E23-92FE-8E9B92C38795> /usr/libexec/apache2/mod_proxy.so
0x10f56e000 - 0x10f576ff7 mod_proxy_http.so (??? - ???) <F5B55152-D3D1-34AE-A95A-029F01476A54> /usr/libexec/apache2/mod_proxy_http.so
0x10f57c000 - 0x10f57efff mod_proxy_scgi.so (??? - ???) <DFD46BF1-F69D-383B-8B33-5273DD8037E4> /usr/libexec/apache2/mod_proxy_scgi.so
0x10f583000 - 0x10f589ff7 mod_proxy_balancer.so (??? - ???) <BC9C283D-8852-3016-8142-96A5675956FA> /usr/libexec/apache2/mod_proxy_balancer.so
I can post more details as requested.
apache-2.2 php httpd mac-osx-server process
asked May 26 '12 at 15:27
Thomas AdamsThomas Adams
243
I have this recurring issue where an httpd processes will randomly start running at 100% CPU. Often other httpd processes will join in, and it will continue until I restart Apache. Oddly, the thing it's running 100% CPU on is "OPTIONS * HTTP/1.0". Here's the output from one of these:
9-0 38787 1/9/391 C 103.14 1323 7 0.0 0.08 4.11 ::1 www.mysite.com OPTIONS * HTTP/1.0
CPU is at 103.14% and it's been 1323 seconds since its last request. It's also stuck in 'C' - closing connection state.
Here's another case where other processes join in running 100% CPU:
0-0 12792 0/33/64 W 95.73 1097 0 0.0 0.10 0.39 66.68.237.216 www.mysite.com POST /page_a.php HTTP/1.1
9-0 12795 1/6/15 C 94.42 1174 0 0.0 0.03 0.07 ::1 www.myserver.com OPTIONS * HTTP/1.0
19-0 12986 0/4/41 W 95.67 1011 0 0.0 0.03 0.24 81.237.216.111 www.mysite.com POST /page_b.php HTTP/1.1
20-0 12720 0/10/10 W 94.32 1220 0 0.0 0.03 0.03 187.184.103.218 www.mysite.com POST /page_a.php HTTP/1.1
My setup is that this is on OS X Lion 10.4.7. I'm running Apache2 with PHP 5.3. Server Version: Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8r DAV/2 PHP/5.3.10 with Suhosin-Patch
Some potentially relevant http.conf settings:
MaxRequestsPerChild 100000
Timeout 300
KeepAlive On
KeepAliveTimeout 8
MaxKeepAliveRequests 100
When I sample the runaway processes, I see each of them show _spin_lock and kevent like so:
Sort by top of stack, same collapsed (when >= 5):
_spin_lock$VARIANT$mp (in libsystem_c.dylib) 4358
kevent (in libsystem_kernel.dylib) 2179
Here is some of the non-repeating Apple code I see:
Call graph:
2413 Thread_1080146 DispatchQueue_1: com.apple.main-thread (serial)
+ 2413 start (in httpd) + 52 [0x10f364794]
+ 2413 main (in httpd) + 4045 [0x10f37048d]
+ 2413 ap_mpm_run (in httpd) + 1740 [0x10f3aaabc]
+ 2413 perform_idle_server_maintenance (in httpd) + 703 [0x10f3aa38f]
+ 2413 make_child (in httpd) + 435 [0x10f3aa003]
+ 2413 child_main (in httpd) + 1831 [0x10f3a9e47]
+ 2413 clean_child_exit (in httpd) + 49 [0x10f3a8d31]
+ 2413 apr_pool_destroy (in libapr-1.0.dylib) + 52 [0x10f45761b]
+ 2413 ??? (in libapr-1.0.dylib) load address 0x10f44b000 + 0xb7b4 [0x10f4567b4]
+ 2413 php_apache_child_shutdown (in libphp5.so) + 17 [0x10fa3842f]
+ 2413 php_module_shutdown_wrapper (in libphp5.so) + 9 [0x10f97021d]
+ 2413 php_module_shutdown (in libphp5.so) + 35 [0x10f970167]
+ 2413 zend_shutdown (in libphp5.so) + 57 [0x10f9c0692]
+ 2413 zend_hash_destroy (in libphp5.so) + 53 [0x10f9cb19a]
+ 2413 destroy_op_array (in libphp5.so) + 271 [0x10f9b91c0]
+ 2413 _efree (in libphp5.so) + 52 [0x10f9a6312]
+ 2413 _zend_mm_free_canary_int (in libphp5.so) + 473 [0x10f9db899]
+ 2413 free (in libsystem_c.dylib) + 71 [0x7fff8f86170e]
+ 2413 szone_size_try_large (in libsystem_c.dylib) + 37 [0x7fff8f8240f9]
+ 2413 _spin_lock$VARIANT$mp (in libsystem_c.dylib) + 30,25,... [0x7fff8f86336e,0x7fff8f863369,...]
2413 Thread_1080153 DispatchQueue_2: com.apple.libdispatch-manager (serial)
2413 _dispatch_mgr_thread (in libdispatch.dylib) + 54 [0x7fff908fc31a]
2413 _dispatch_mgr_invoke (in libdispatch.dylib) + 923 [0x7fff908fd78a]
2413 kevent (in libsystem_kernel.dylib) + 10 [0x7fff8ed047e6]
And then stuff like this:
0x10f4ce000 - 0x10f4d0ff7 mod_reqtimeout.so (??? - ???) <035F872B-8196-3CCE-A4D0-AA8D5C1550EC> /usr/libexec/apache2/mod_reqtimeout.so
0x10f4d4000 - 0x10f4d8ff7 mod_ext_filter.so (??? - ???) <F33A3409-BFBA-3C8F-9FC9-C1BBC17DBE3F> /usr/libexec/apache2/mod_ext_filter.so
0x10f4dd000 - 0x10f4eaff7 mod_include.so (??? - ???) <70E541B9-A864-3FE1-AB85-EBF632FFD376> /usr/libexec/apache2/mod_include.so
0x10f4ef000 - 0x10f4f2ff7 mod_filter.so (??? - ???) <2093EE45-E335-3B36-A6BA-6EA4EB7E483C> /usr/libexec/apache2/mod_filter.so
0x10f4f6000 - 0x10f4f8ff7 mod_substitute.so (??? - ???) <9ED1AB37-EE13-39DC-AB97-98A2B39555B0> /usr/libexec/apache2/mod_substitute.so
0x10f4fc000 - 0x10f501ff7 mod_deflate.so (??? - ???) <E334FEA5-BB4E-36BE-A364-DCE248793345> /usr/libexec/apache2/mod_deflate.so
0x10f506000 - 0x10f50bfff mod_log_config.so (??? - ???) <61EA3051-8D4A-3A00-B7BC-C68E18CA9479> /usr/libexec/apache2/mod_log_config.so
0x10f511000 - 0x10f512fef mod_log_forensic.so (??? - ???) <06654BB4-CA2A-3D70-B759-12191119E5C7> /usr/libexec/apache2/mod_log_forensic.so
0x10f516000 - 0x10f516ff7 mod_logio.so (??? - ???) <A3CE3AED-D5FE-3947-8CEB-0A8F4C534E86> /usr/libexec/apache2/mod_logio.so
0x10f51a000 - 0x10f51aff7 mod_env.so (??? - ???) <DE58A08A-C6C9-307B-A077-03A9F1AA14C5> /usr/libexec/apache2/mod_env.so
0x10f51e000 - 0x10f524fff mod_mime_magic.so (??? - ???) <1737F398-6315-31B4-B8B4-57F590F07268> /usr/libexec/apache2/mod_mime_magic.so
0x10f529000 - 0x10f52aff7 mod_cern_meta.so (??? - ???) <B0D4FF96-C96D-3F3A-AECD-431F22A998FA> /usr/libexec/apache2/mod_cern_meta.so
0x10f52e000 - 0x10f52ffff mod_expires.so (??? - ???) <FE97E6F0-3B84-3CAC-8873-3B1525142041> /usr/libexec/apache2/mod_expires.so
0x10f533000 - 0x10f536ff7 mod_headers.so (??? - ???) <5701D330-D777-3AAF-AEEF-F02D067F851E> /usr/libexec/apache2/mod_headers.so
0x10f53b000 - 0x10f53cfff mod_ident.so (??? - ???) <5FDFBB79-3A0C-3439-BF71-74E6A3A4B7AC> /usr/libexec/apache2/mod_ident.so
0x10f540000 - 0x10f542ff7 mod_usertrack.so (??? - ???) <09F36BB5-4F8D-339B-AA52-5FA23A946837> /usr/libexec/apache2/mod_usertrack.so
0x10f546000 - 0x10f547fff mod_setenvif.so (??? - ???) <D312073B-0320-3810-9535-3AB8EBF83659> /usr/libexec/apache2/mod_setenvif.so
0x10f54b000 - 0x10f54cff7 mod_version.so (??? - ???) <4BF2E21C-E452-340E-A6B4-196DBD731CA8> /usr/libexec/apache2/mod_version.so
0x10f550000 - 0x10f566fff mod_proxy.so (??? - ???) <0169F3B2-A81A-3E23-92FE-8E9B92C38795> /usr/libexec/apache2/mod_proxy.so
0x10f56e000 - 0x10f576ff7 mod_proxy_http.so (??? - ???) <F5B55152-D3D1-34AE-A95A-029F01476A54> /usr/libexec/apache2/mod_proxy_http.so
0x10f57c000 - 0x10f57efff mod_proxy_scgi.so (??? - ???) <DFD46BF1-F69D-383B-8B33-5273DD8037E4> /usr/libexec/apache2/mod_proxy_scgi.so
0x10f583000 - 0x10f589ff7 mod_proxy_balancer.so (??? - ???) <BC9C283D-8852-3016-8142-96A5675956FA> /usr/libexec/apache2/mod_proxy_balancer.so
I can post more details as requested.
apache-2.2 php httpd mac-osx-server process
apache-2.2 php httpd mac-osx-server process
asked May 26 '12 at 15:27
Thomas AdamsThomas Adams
243
asked May 26 '12 at 15:27
Thomas AdamsThomas Adams
243
edited May 31 '12 at 20:10
Thomas Adams
asked May 26 '12 at 15:27
Thomas AdamsThomas Adams
243
asked May 26 '12 at 15:27
Thomas AdamsThomas Adams
243
asked May 26 '12 at 15:27
Thomas AdamsThomas Adams
243
243
I ran into a similar problem once on FreeBSD. See /server-status shows over 240 requests like “OPTIONS * HTTP/1.0” 200 - “-” “Apache (internal dummy connection)” . The trigger was filesystem snapshots, which momentarily suspended writes to the filesystem so that the system could take a filesystem snapshot. Is your filesystem healthy? Anything unusual on your filesystem?
– Stefan Lasiewski
May 27 '12 at 18:13
add a comment |
I ran into a similar problem once on FreeBSD. See /server-status shows over 240 requests like “OPTIONS * HTTP/1.0” 200 - “-” “Apache (internal dummy connection)” . The trigger was filesystem snapshots, which momentarily suspended writes to the filesystem so that the system could take a filesystem snapshot. Is your filesystem healthy? Anything unusual on your filesystem?
– Stefan Lasiewski
May 27 '12 at 18:13
I ran into a similar problem once on FreeBSD. See /server-status shows over 240 requests like “OPTIONS * HTTP/1.0” 200 - “-” “Apache (internal dummy connection)” . The trigger was filesystem snapshots, which momentarily suspended writes to the filesystem so that the system could take a filesystem snapshot. Is your filesystem healthy? Anything unusual on your filesystem?
– Stefan Lasiewski
May 27 '12 at 18:13
I ran into a similar problem once on FreeBSD. See /server-status shows over 240 requests like “OPTIONS * HTTP/1.0” 200 - “-” “Apache (internal dummy connection)” . The trigger was filesystem snapshots, which momentarily suspended writes to the filesystem so that the system could take a filesystem snapshot. Is your filesystem healthy? Anything unusual on your filesystem?
– Stefan Lasiewski
May 27 '12 at 18:13
add a comment |
2 Answers
2
active
oldest
votes
I am not totally familiar with the macosx process command line tools, but if those values in the 2nd column are httpd child process pids, then I would try and attach to the process using the dtrace tool and see what they are up to while hung like that.
dtrace -p 12345
http://www.troeger.eu/cms/?p=255
man pages
answered May 27 '12 at 17:41
Tom HTom H
8,56833257
I can sample the process from the activity monitor, and it appears to be endless non-repeating Apple code. I'll post some in my original question
– Thomas Adams
May 31 '12 at 20:07
add a comment |
So I've solved this problem by rewriting some of the code. It appears this odd behavior was due to something in my PHP code. I don't know what it was exactly, but I removed a number of global variables and broke several parts into smaller functions, and the issue stopped. It's odd that PHP's timeout wouldn't be triggered, but there you go.
answered Jun 10 '12 at 17:51
Thomas AdamsThomas Adams
243
add a comment |
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2 Answers
2
active
oldest
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2 Answers
2
active
oldest
votes
active
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active
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votes
I am not totally familiar with the macosx process command line tools, but if those values in the 2nd column are httpd child process pids, then I would try and attach to the process using the dtrace tool and see what they are up to while hung like that.
dtrace -p 12345
http://www.troeger.eu/cms/?p=255
man pages
answered May 27 '12 at 17:41
Tom HTom H
8,56833257
I can sample the process from the activity monitor, and it appears to be endless non-repeating Apple code. I'll post some in my original question
– Thomas Adams
May 31 '12 at 20:07
add a comment |
I am not totally familiar with the macosx process command line tools, but if those values in the 2nd column are httpd child process pids, then I would try and attach to the process using the dtrace tool and see what they are up to while hung like that.
dtrace -p 12345
http://www.troeger.eu/cms/?p=255
man pages
answered May 27 '12 at 17:41
Tom HTom H
8,56833257
I can sample the process from the activity monitor, and it appears to be endless non-repeating Apple code. I'll post some in my original question
– Thomas Adams
May 31 '12 at 20:07
add a comment |
I am not totally familiar with the macosx process command line tools, but if those values in the 2nd column are httpd child process pids, then I would try and attach to the process using the dtrace tool and see what they are up to while hung like that.
dtrace -p 12345
http://www.troeger.eu/cms/?p=255
man pages
answered May 27 '12 at 17:41
Tom HTom H
8,56833257
I am not totally familiar with the macosx process command line tools, but if those values in the 2nd column are httpd child process pids, then I would try and attach to the process using the dtrace tool and see what they are up to while hung like that.
dtrace -p 12345
http://www.troeger.eu/cms/?p=255
man pages
answered May 27 '12 at 17:41
Tom HTom H
8,56833257
answered May 27 '12 at 17:41
Tom HTom H
8,56833257
answered May 27 '12 at 17:41
Tom HTom H
8,56833257
answered May 27 '12 at 17:41
Tom HTom H
8,56833257
8,56833257
I can sample the process from the activity monitor, and it appears to be endless non-repeating Apple code. I'll post some in my original question
– Thomas Adams
May 31 '12 at 20:07
add a comment |
I can sample the process from the activity monitor, and it appears to be endless non-repeating Apple code. I'll post some in my original question
– Thomas Adams
May 31 '12 at 20:07
I can sample the process from the activity monitor, and it appears to be endless non-repeating Apple code. I'll post some in my original question
– Thomas Adams
May 31 '12 at 20:07
I can sample the process from the activity monitor, and it appears to be endless non-repeating Apple code. I'll post some in my original question
– Thomas Adams
May 31 '12 at 20:07
add a comment |
So I've solved this problem by rewriting some of the code. It appears this odd behavior was due to something in my PHP code. I don't know what it was exactly, but I removed a number of global variables and broke several parts into smaller functions, and the issue stopped. It's odd that PHP's timeout wouldn't be triggered, but there you go.
answered Jun 10 '12 at 17:51
Thomas AdamsThomas Adams
243
add a comment |
So I've solved this problem by rewriting some of the code. It appears this odd behavior was due to something in my PHP code. I don't know what it was exactly, but I removed a number of global variables and broke several parts into smaller functions, and the issue stopped. It's odd that PHP's timeout wouldn't be triggered, but there you go.
answered Jun 10 '12 at 17:51
Thomas AdamsThomas Adams
243
add a comment |
So I've solved this problem by rewriting some of the code. It appears this odd behavior was due to something in my PHP code. I don't know what it was exactly, but I removed a number of global variables and broke several parts into smaller functions, and the issue stopped. It's odd that PHP's timeout wouldn't be triggered, but there you go.
answered Jun 10 '12 at 17:51
Thomas AdamsThomas Adams
243
So I've solved this problem by rewriting some of the code. It appears this odd behavior was due to something in my PHP code. I don't know what it was exactly, but I removed a number of global variables and broke several parts into smaller functions, and the issue stopped. It's odd that PHP's timeout wouldn't be triggered, but there you go.
answered Jun 10 '12 at 17:51
Thomas AdamsThomas Adams
243
answered Jun 10 '12 at 17:51
Thomas AdamsThomas Adams
243
answered Jun 10 '12 at 17:51
Thomas AdamsThomas Adams
243
answered Jun 10 '12 at 17:51
Thomas AdamsThomas Adams
243
243
add a comment |
add a comment |
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I ran into a similar problem once on FreeBSD. See /server-status shows over 240 requests like “OPTIONS * HTTP/1.0” 200 - “-” “Apache (internal dummy connection)” . The trigger was filesystem snapshots, which momentarily suspended writes to the filesystem so that the system could take a filesystem snapshot. Is your filesystem healthy? Anything unusual on your filesystem?
– Stefan Lasiewski
May 27 '12 at 18:13