etrace 跟踪 nginx之HTTP请求流程

curl 127.0.0.1

|    |       |       \--ngx_epoll_process_events
|    |       |       |       \--ngx_time_update
|    |       |       |       |       \--ngx_gmtime
|    |       |       |       |       \--ngx_sprintf
|    |       |       |       |       |       \--ngx_vslprintf
|    |       |       |       |       |       |       \--ngx_sprintf_num
|    |       |       |       |       |       |       \--ngx_sprintf_num (total: 5 times)
|    |       |       |       |       \--ngx_localtime
|    |       |       |       |       \--ngx_sprintf
|    |       |       |       |       |       \--ngx_vslprintf
|    |       |       |       |       |       |       \--ngx_sprintf_num
|    |       |       |       |       |       |       \--ngx_sprintf_num (total: 6 times)
|    |       |       |       |       \--ngx_sprintf
|    |       |       |       |       |       \--ngx_vslprintf
|    |       |       |       |       |       |       \--ngx_sprintf_num
|    |       |       |       |       |       |       \--ngx_sprintf_num (total: 7 times)
|    |       |       |       |       \--ngx_sprintf
|    |       |       |       |       |       \--ngx_vslprintf
|    |       |       |       |       |       |       \--ngx_sprintf_num
|    |       |       |       |       |       |       \--ngx_sprintf_num (total: 8 times)
|    |       |       |       \--ngx_event_accept
|    |       |       |       |       \--ngx_get_connection
|    |       |       |       |       \--ngx_create_pool
|    |       |       |       |       |       \--ngx_memalign
|    |       |       |       |       \--ngx_palloc
|    |       |       |       |       \--ngx_palloc (total: 2 times)
|    |       |       |       |       \--ngx_pnalloc
|    |       |       |       |       \--ngx_sock_ntop
|    |       |       |       |       |       \--ngx_snprintf
|    |       |       |       |       |       |       \--ngx_vslprintf
|    |       |       |       |       |       |       |       \--ngx_sprintf_num
|    |       |       |       |       |       |       |       \--ngx_sprintf_num (total: 4 times)
|    |       |       |       |       \--ngx_http_init_connection
|    |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       |       \--ngx_event_add_timer
|    |       |       |       |       |       |       \--ngx_rbtree_insert
|    |       |       |       |       |       \--ngx_handle_read_event
|    |       |       |       |       |       |       \--ngx_epoll_add_event
|    |       |       \--ngx_event_expire_timers
|    |       |       |       \--ngx_rbtree_min
|    |       \--ngx_process_events_and_timers
|    |       |       \--ngx_event_find_timer
|    |       |       |       \--ngx_rbtree_min
|    |       |       \--ngx_epoll_process_events
|    |       |       |       \--ngx_time_update
|    |       |       |       \--ngx_http_init_request
|    |       |       |       |       \--ngx_pcalloc
|    |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       \--ngx_pcalloc
|    |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       |       |       \--ngx_palloc_large
|    |       |       |       |       |       |       |       \--ngx_alloc
|    |       |       |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       \--ngx_create_temp_buf
|    |       |       |       |       |       \--ngx_pcalloc
|    |       |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       |       |       |       \--ngx_palloc_block
|    |       |       |       |       |       |       |       |       \--ngx_memalign
|    |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       |       |       \--ngx_palloc_large
|    |       |       |       |       |       |       |       \--ngx_alloc
|    |       |       |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       \--ngx_create_pool
|    |       |       |       |       |       \--ngx_memalign
|    |       |       |       |       \--ngx_list_init
|    |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       \--ngx_pcalloc
|    |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       \--ngx_pcalloc
|    |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       \--ngx_http_process_request_line
|    |       |       |       |       |       \--ngx_http_read_request_header
|    |       |       |       |       |       |       \--ngx_unix_recv
|    |       |       |       |       |       \--ngx_http_parse_request_line
|    |       |       |       |       |       \--ngx_list_init
|    |       |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       |       \--ngx_array_init
|    |       |       |       |       |       |       \--ngx_palloc
|    |       |       |       |       |       \--ngx_http_process_request_headers
|    |       |       |       |       |       |       \--ngx_http_read_request_header
|    |       |       |       |       |       |       \--ngx_http_parse_header_line
|    |       |       |       |       |       |       \--ngx_list_push
|    |       |       |       |       |       |       \--ngx_pnalloc
|    |       |       |       |       |       |       \--ngx_hash_find
|    |       |       |       |       |       |       \--ngx_http_process_user_agent
|    |       |       |       |       |       |       |       \--ngx_strstrn
|    |       |       |       |       |       |       |       \--ngx_strstrn (total: 6 times)
|    |       |       |       |       |       |       \--ngx_http_parse_header_line
|    |       |       |       |       |       |       \--ngx_list_push
|    |       |       |       |       |       |       \--ngx_pnalloc
|    |       |       |       |       |       |       \--ngx_hash_find
|    |       |       |       |       |       |       \--ngx_http_process_host
|    |       |       |       |       |       |       |       \--ngx_http_validate_host
|    |       |       |       |       |       |       \--ngx_http_parse_header_line
|    |       |       |       |       |       |       \--ngx_list_push
|    |       |       |       |       |       |       \--ngx_pnalloc
|    |       |       |       |       |       |       \--ngx_hash_find
|    |       |       |       |       |       |       \--ngx_http_parse_header_line
|    |       |       |       |       |       |       \--ngx_http_process_request_header
|    |       |       |       |       |       |       |       \--ngx_http_find_virtual_server
|    |       |       |       |       |       |       \--ngx_http_process_request
|    |       |       |       |       |       |       |       \--ngx_event_del_timer
|    |       |       |       |       |       |       |       |       \--ngx_rbtree_delete
|    |       |       |       |       |       |       |       \--ngx_http_handler
|    |       |       |       |       |       |       |       |       \--ngx_http_core_run_phases
|    |       |       |       |       |       |       |       |       |       \--ngx_http_core_rewrite_phase
|    |       |       |       |       |       |       |       |       |       |       \--ngx_http_rewrite_handler
|    |       |       |       |       |       |       |       |       |       \--ngx_http_core_find_config_phase
|    |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_find_location
|    |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_find_static_location
|    |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_find_location
|    |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_find_static_location
|    |       |       |       |       |       |       |       |       |       |       \--ngx_http_update_location_config
|    |       |       |       |       |       |       |       |       |       \--ngx_http_core_rewrite_phase
|    |       |       |       |       |       |       |       |       |       |       \--ngx_http_rewrite_handler
|    |       |       |       |       |       |       |       |       |       \--ngx_http_core_post_rewrite_phase
|    |       |       |       |       |       |       |       |       |       \--ngx_http_core_generic_phase
|    |       |       |       |       |       |       |       |       |       |       \--ngx_http_limit_req_handler
|    |       |       |       |       |       |       |       |       |       \--ngx_http_core_generic_phase
|    |       |       |       |       |       |       |       |       |       |       \--ngx_http_limit_conn_handler
|    |       |       |       |       |       |       |       |       |       \--ngx_http_core_access_phase
|    |       |       |       |       |       |       |       |       |       |       \--ngx_http_access_handler
|    |       |       |       |       |       |       |       |       |       \--ngx_http_core_access_phase
|    |       |       |       |       |       |       |       |       |       |       \--ngx_http_auth_basic_handler
|    |       |       |       |       |       |       |       |       |       \--ngx_http_core_post_access_phase
|    |       |       |       |       |       |       |       |       |       \--ngx_http_core_content_phase
|    |       |       |       |       |       |       |       |       |       |       \--ngx_http_index_handler
|    |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_map_uri_to_path
|    |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_pnalloc
|    |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_cpystrn
|    |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_set_disable_symlinks
|    |       |       |       |       |       |       |       |       |       |       |       \--ngx_open_cached_file
|    |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_file_info_wrapper
|    |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_internal_redirect
|    |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_set_exten
|    |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_update_location_config
|    |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_run_phases
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_rewrite_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_rewrite_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_find_config_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_core_find_location
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_core_find_static_location
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_core_find_location
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_core_find_static_location
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_update_location_config
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_rewrite_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_rewrite_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_post_rewrite_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_generic_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_limit_req_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_generic_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_limit_conn_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_access_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_access_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_access_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_auth_basic_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_post_access_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_content_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_index_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_content_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_autoindex_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_core_content_phase
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_static_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_map_uri_to_path
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_pnalloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_cpystrn
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_set_disable_symlinks
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_open_cached_file
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_pool_cleanup_add
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_palloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_palloc (total: 2 times)
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_open_and_stat_file
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_open_file_wrapper
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_discard_request_body
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_test_expect
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_set_content_type
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_hash_find
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_pcalloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_palloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_pcalloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_palloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_send_header
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_not_modified_header_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_headers_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_userid_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_charset_header_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_destination_charset
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_ssi_header_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_gzip_header_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_range_header_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_list_push
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_chunked_header_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_header_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_create_temp_buf
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_pcalloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_palloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_palloc (total: 2 times)
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_sprintf
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_vslprintf
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_sprintf_num
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_time
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_gmtime
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_sprintf
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_vslprintf
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_sprintf_num
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_sprintf_num (total: 5 times)
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_write_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_alloc_chain_link
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_palloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_output_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_range_body_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_copy_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_pcalloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_palloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_output_chain
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_output_chain_as_is
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_charset_body_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_ssi_body_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_postpone_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_gzip_body_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_chunked_body_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_write_filter
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_alloc_chain_link
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_palloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_linux_sendfile_chain
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_array_push
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_finalize_request
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_post_action
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_finalize_connection
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_close_request
|    |       |       |       |       |       |       |       |       |       |       \--ngx_http_finalize_request
|    |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_finalize_connection
|    |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_set_keepalive
|    |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_free_request
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_http_log_request
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_handler
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_script_flush_no_cacheable_variables
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_variable_getlen
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_get_indexed_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_variable_remote_addr
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_escape
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_variable_getlen
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_get_indexed_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_variable_remote_user
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_auth_basic_user
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_variable_getlen
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_get_indexed_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_variable_request_line
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_escape
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_variable_getlen
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_get_indexed_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_variable_header
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_variable_getlen
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_get_indexed_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_variable_header
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_escape
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_pnalloc
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_get_indexed_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_copy_short
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_get_indexed_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_copy_short
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_time
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_copy_short
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_get_indexed_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_copy_short
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_status
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_sprintf
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_vslprintf
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_sprintf_num
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_copy_short
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_body_bytes_sent
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_sprintf
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_vslprintf
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_sprintf_num
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_copy_short
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_get_indexed_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_copy_short
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_get_indexed_variable
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_copy_short
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_http_log_write
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_write_fd
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_destroy_pool
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       |      \--ngx_pool_cleanup_file
|    |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_event_add_timer
|    |       |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_rbtree_insert
|    |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_handle_read_event
|    |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_pfree
|    |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_pfree (total: 2 times)
|    |       |       |       |       |       |       |       |       |       |       |       |       |       \--ngx_reusable_connection
|    |       |       |       |       |       |       |       \--ngx_http_run_posted_requests
|    |       |       \--ngx_event_process_posted
|    |       |       |       \--ngx_http_keepalive_handler
|    |       |       |       |       \--ngx_palloc
|    |       |       |       |       |       \--ngx_palloc_large
|    |       |       |       |       |       |       \--ngx_alloc
|    |       |       |       |       \--ngx_unix_recv
|    |       |       |       |       \--ngx_handle_read_event
|    |       |       |       |       \--ngx_pfree
|    |       \--ngx_process_events_and_timers
|    |       |       \--ngx_event_find_timer
|    |       |       |       \--ngx_rbtree_min
|    |       |       \--ngx_epoll_process_events
|    |       |       |       \--ngx_time_update
|    |       |       |       \--ngx_http_keepalive_handler
|    |       |       |       |       \--ngx_palloc
|    |       |       |       |       |       \--ngx_palloc_large
|    |       |       |       |       |       |       \--ngx_alloc
|    |       |       |       |       \--ngx_unix_recv
|    |       |       |       |       \--ngx_http_close_connection
|    |       |       |       |       |       \--ngx_close_connection
|    |       |       |       |       |       |       \--ngx_event_del_timer
|    |       |       |       |       |       |       |       \--ngx_rbtree_delete
|    |       |       |       |       |       |       \--ngx_epoll_del_connection
|    |       |       |       |       |       |       \--ngx_reusable_connection
|    |       |       |       |       |       |       \--ngx_free_connection
|    |       |       |       |       |       \--ngx_destroy_pool
|    |       |       \--ngx_event_expire_timers
|    |       \--ngx_process_events_and_timers
|    |       |       \--ngx_event_find_timer