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
> >
> >
> >--
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>


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