Bug #70190 [Opn]: some errors cause php high cpu usage

Edit report at https://bugs.php.net/bug.php?id=70190&edit=1 ID: 70190 User updated by: amor dot tsai at gmail dot com Reported by: amor dot tsai at gmail dot com Summary: some errors cause php high cpu usage Status: Open Type: Bug Package: opcache Operating System: CentOS release 6.3 (Final) PHP Version: 5.6.9 Block user comment: N Private report: N New Comment: #0 0xffffffffff60009f in ?? () #1 0x00007fff9d5523f0 in ?? () #2 0x0000003a3ee8b71d in gettimeofday () from /lib64/libc.so.6 #3 0x00002ba0c2ddc2c6 in memcached_mark_server_for_timeout (server=0xa460b48) at ./libmemcached/server.hpp:102 #4 0x00002ba0c2ddc5b0 in memcached_quit_server (ptr=0xa460b48, io_death=true) at libmemcached/quit.cc:126 #5 0x00002ba0c2dd9f6c in memcached_io_reset (ptr=0xa460b48) at libmemcached/io.cc:748 #6 0x00002ba0c2ddddf4 in _read_one_response (ptr=0xa460b48, buffer=0x7fff9d5523f0 "ERROR\r\n", buffer_length=1024, result=0x7fff9d552830, numeric_value=@0x7fff9d5527f8) at libmemcached/response.cc:721 #7 0x00002ba0c2ddde80 in memcached_read_one_response (ptr=0xa460b48, result=0x7fff9d552830) at libmemcached/response.cc:739 #8 0x00002ba0c2ddc071 in memcached_purge (ptr=0xa460b48) at libmemcached/purge.cc:96 #9 0x00002ba0c2dd9224 in io_flush (ptr=0xa460b48, with_flush=true, error=@0x7fff9d552a90) at libmemcached/io.cc:283 #10 0x00002ba0c2dd9b7b in _io_write (ptr=0xa460b48, buffer=0x0, length=0, with_flush=true) at libmemcached/io.cc:598 #11 0x00002ba0c2dd9bb8 in memcached_io_write (ptr=0xa460b48) at libmemcached/io.cc:609 #12 0x00002ba0c2dd9ca5 in memcached_io_writev (ptr=0xa460b48, vector=0x7fff9d552c30, number_of=1, with_flush=true) at libmemcached/io.cc:640 #13 0x00002ba0c2dd294a in memcached_vdo (instance=0xa460b48, vector=0x7fff9d552c20, count=1, with_flush=true) at libmemcached/do.cc:76 #14 0x00002ba0c2ddc482 in memcached_quit_server (ptr=0xa460b48, io_death=false) at libmemcached/quit.cc:79 #15 0x00002ba0c2ddc5f2 in send_quit (ptr=0xa2c6a20) at libmemcached/quit.cc:137 #16 0x00002ba0c2dda895 in _free (ptr=0xa2c6a20, release_st=true) at libmemcached/memcached.cc:130 #17 0x00002ba0c2ddacf3 in memcached_free (ptr=0xa2c6a20) at libmemcached/memcached.cc:284 #18 0x00002ba0c2bad500 in php_memc_destroy (m_obj=0xa348068, persistent=0 '\000') at /data1/fxpbs/src/memcached-2.0.1/php_memcached.c:2519 #19 0x00002ba0c2baeb0f in php_memc_free_storage (i_obj=0xa34a1c0) at /data1/fxpbs/src/memcached-2.0.1/php_memcached.c:2530 #20 0x000000000088f978 in zend_objects_store_del_ref_by_handle_ex (handle=4, handlers=<value optimized out>) at /data1/fxpbs/src/php-5.6.9/Zend/zend_objects_API.c:226 #21 0x000000000088f993 in zend_objects_store_del_ref (zobject=0xa34a390) at /data1/fxpbs/src/php-5.6.9/Zend/zend_objects_API.c:178 #22 0x00002ba0c19f551f in accel_clean_non_persistent_class (pce=<value optimized out>) at /data1/fxpbs/src/php-5.6.9/ext/opcache/ZendAccelerator.c:2302 #23 0x0000000000870623 in zend_hash_reverse_apply (ht=0x9fba170, apply_func=0x2ba0c19f54d0 <accel_clean_non_persistent_class>) at /data1/fxpbs/src/php-5.6.9/Zend/zend_hash.c:729 #24 0x00002ba0c19f52ff in zend_accel_fast_shutdown () at /data1/fxpbs/src/php-5.6.9/ext/opcache/ZendAccelerator.c:2354 #25 0x00002ba0c19f921d in accel_deactivate () at /data1/fxpbs/src/php-5.6.9/ext/opcache/ZendAccelerator.c:2383 #26 0x000000000085708e in zend_llist_apply (l=<value optimized out>, func=0x853290 <zend_extension_deactivator>) at /data1/fxpbs/src/php-5.6.9/Zend/zend_llist.c:191 #27 0x00000000008565a3 in shutdown_executor () at /data1/fxpbs/src/php-5.6.9/Zend/zend_execute_API.c:243 #28 0x0000000000863862 in zend_deactivate () at /data1/fxpbs/src/php-5.6.9/Zend/zend.c:960 #29 0x0000000000802f9d in php_request_shutdown (dummy=<value optimized out>) at /data1/fxpbs/src/php-5.6.9/main/main.c:1882 #30 0x0000000000910d09 in main (argc=<value optimized out>, argv=<value optimized out>) at /data1/fxpbs/src/php-5.6.9/sapi/fpm/fpm/fpm_main.c:1992 Previous Comments: ------------------------------------------------------------------------ [2015-08-05 02:15:28] amor dot tsai at gmail dot com update the php version ------------------------------------------------------------------------ [2015-08-03 13:44:14] amor dot tsai at gmail dot com Description: ------------ I have got my single php high cpu usage.here is the top info. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 671968 www 20 0 777m 43m 35m R 99.8 0.1 14:13.31 php-fpm 685473 www 20 0 778m 39m 30m R 99.8 0.1 2:33.39 php-fpm 685481 www 20 0 776m 37m 30m R 99.8 0.1 4:11.09 php-fpm 4048964 www 20 0 18.2g 16g 528 S 33.1 26.4 56902:01 memcached 685265 www 20 0 781m 45m 36m S 11.9 0.1 0:09.87 php-fpm 685392 www 20 0 778m 43m 35m S 9.9 0.1 0:09.17 php-fpm 685248 www 20 0 777m 41m 34m S 8.6 0.1 0:09.64 php-fpm 685289 www 20 0 778m 42m 33m S 8.3 0.1 0:09.59 php-fpm 685338 www 20 0 776m 40m 33m S 7.9 0.1 0:09.07 php-fpm 685469 www 20 0 777m 41m 33m S 7.6 0.1 0:09.02 php-fpm and when i try to use strace,or ltrace,I can't get anything.it just show like this Process 671968 attached - interrupt to quit.and when i use gdb and bt to output the stack info,it shows like #0 0x00007f45a35bba1d in ?? () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #1 0x00007f45a35bcc62 in ?? () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #2 0x00007f45a35bcd30 in memcached_read_one_response(memcached_server_st*, memcached_result_st*) () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #3 0x00007f45a35baf21 in ?? () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #4 0x00007f45a35b80d4 in ?? () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #5 0x00007f45a35b8a2b in ?? () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #6 0x00007f45a35b8a68 in memcached_io_write(memcached_server_st*) () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #7 0x00007f45a35b8b55 in memcached_io_writev(memcached_server_st*, libmemcached_io_vector_st*, unsigned long, bool) () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #8 0x00007f45a35b18be in memcached_vdo(memcached_server_st*, libmemcached_io_vector_st*, unsigned long, bool) () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #9 0x00007f45a35bb332 in memcached_quit_server(memcached_server_st*, bool) () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #10 0x00007f45a35bb4a2 in send_quit(memcached_st*) () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #11 0x00007f45a35b9745 in ?? () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #12 0x00007f45a35b9ba3 in memcached_free () from /usr/local/php_5.6.9/depend/libmemcached/lib/libmemcached.so.9 #13 0x00007f45a37db550 in ?? () from /usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/memcached.so #14 0x00007f45a37dcb5f in ?? () from /usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/memcached.so #15 0x00000000008476e8 in zend_objects_store_del_ref_by_handle_ex () #16 0x0000000000847703 in zend_objects_store_del_ref () #17 0x00007f45a4532dff in ?? () from /usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/opcache.so #18 0x0000000000828433 in zend_hash_reverse_apply () #19 0x00007f45a4532bdf in ?? () from /usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/opcache.so #20 0x00007f45a4536995 in ?? () from /usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/opcache.so #21 0x000000000080eece in zend_llist_apply () #22 0x000000000080e3e3 in ?? () #23 0x000000000081b682 in zend_deactivate () #24 0x00000000007bad2d in php_request_shutdown () #25 0x00000000008c8ac9 in ?? () #26 0x00000034b761ed5d in __libc_start_main () from /lib64/libc.so.6 #27 0x00000000004316a9 in _start () is there anything wrong? ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=70190&edit=1