Re: Profiling PHP

I did specify the profiler on line 4 of the message. And it is a pretty good one actually. On Mon, 13 May 2002, Zeev Suraski wrote: > We already tried our best to optimize most of the functions that show up in > profiling. Not surprisingly, they are mostly the infrastructure functions... > > What profiler are you using? If it's under Linux, chances are it's > *extremely* inaccurate. Profiling under Linux is horrible. > > Zeev > > At 17:42 13/05/2002, Rasmus Lerdorf wrote: > >I did a quick little profile of a lightly hit PHP server running a variety > >of PHP apps such as IMP, Gallery and a couple of small MySQL-driven apps. > >A semi-representative tiny snapshot of what I would consider normal usage > >of PHP. I threw oprofile at it (oprofile.sourceforge.org) and here are > >the results: > > > >Cpu type: PIII > >Cpu speed was (MHz estimation) : 868.000000 > >Counter 0 counted CPU_CLK_UNHALTED events (clocks processor is not halted) > >with a unit mask of 0x00 (Not set) count 600000 > >vma samples %-age symbol name > >001a56bc 1018 19.7096 zendparse > >001a9f4c 369 7.14424 lex_scan > >001b1ea4 349 6.75702 _emalloc > >001d4ca0 326 6.31171 execute > >001b21b8 301 5.82769 _efree > >001cdaf8 238 4.60794 zend_inline_hash_func > >001ca85c 238 4.60794 zend_hash_add_or_update > >001f5960 171 3.31075 mail_msgno > >001b3028 170 3.29138 _mem_block_check > >0015dcb4 127 2.45886 php_var_unserialize > >001ccae0 120 2.32333 zend_hash_find > >001baf6c 81 1.56825 _zval_ptr_dtor > >001c443c 69 1.33591 _zval_dtor > >0015701c 66 1.27783 smart_str_print_unsigned > >001cbda8 53 1.02614 zend_hash_destroy > >001db270 51 0.987415 _get_zval_ptr > >001ca5f8 48 0.929332 _zend_is_inconsistent > >00156c08 43 0.832527 smart_str_appendl_ex > >001cb9b8 41 0.793804 zend_hash_rehash > >001cc6cc 39 0.755082 zend_hash_copy > >001f64d0 36 0.696999 mail_gc_msg > >0015ef14 33 0.638916 process_nested_data > >001563b0 33 0.638916 php_var_serialize_intern > >001b27fc 31 0.600194 _estrndup > >00208200 29 0.561471 mm_blocknotify > >0015ee18 28 0.54211 var_push > >001c45c0 27 0.522749 zval_add_ref > >0015f2b4 26 0.503388 parse_iv2 > >001bdaf0 25 0.484027 destroy_op_array > >001c4970 24 0.464666 _zval_ptr_dtor_wrapper > >001cb3b4 22 0.425944 zend_hash_index_update_or_next_insert > >001b2440 21 0.406583 _erealloc > >001c3560 20 0.387222 zend_str_tolower > >001b9970 20 0.387222 zendlex > >001c3dfc 19 0.367861 zend_ptr_stack_n_push > >001d398c 18 0.3485 zend_fetch_var_address > >001c83cc 17 0.329138 add_next_index_long > >001c45d0 17 0.329138 _zval_copy_ctor > >001bdcd0 16 0.309777 init_op > > > >Not all that useful. Would be cool to run this for longer on a busy site > >to get more accurate numbers. It does give some indication of where small > >code optimizations would make the biggest overall difference. > > > >-Rasmus > > > > > >-- > >PHP Development Mailing List <http://www.php.net/> > >To unsubscribe, visit: http://www.php.net/unsub.php >