Re: NT directory traversal speed on 25K files on Cygwin

>On Sun, Feb 26, 2006 at 02:55:52PM -0500, Christopher Faylor wrote:
>>On Thu, Feb 23, 2006 at 03:07:07PM +0100, Alex Riesen wrote:
>>>filesystem is slow and locked down, and exec-attribute is NOT really
>>>useful even on NTFS (it is somehow related to execute permission and
>>>open files.  I still cannot figure out how exactly are they related).
>>
>>Again, it's not clear if you're talking about Windows or Cygwin but
>>under Cygwin, in the default configuration, the exec attribute means
>>the same thing to cygwin as it does to linux.
>
>I don't know about native Windows speed, but comparing NutCracker with
>Cygwin on a simple 'find .  | wc -l' already gives a clue that looking
>at Cygwin to benchmark NT file inspection IO will give a skewed
>picture:
>
>##### NutCracker $ time find .  | wc -l
>
>real    0m 1.44s
>user    0m 0.45s
>sys     0m 0.98s
>25794
>
>##### Cygwin $ time c:\\cygwin\\bin\\find .  | wc -l
>
>real    0m 6.72s
>user    0m 1.09s
>sys     0m 5.59s
>25794
>
>##### CMD.EXE + DIR /S C:\PROJECT> c:\cygwin\bin\time cmd /c dir /s
>>NUL 0.01user 0.01system 0:05.70elapsed 0%CPU (0avgtext+0avgdata
>6320maxresident)k 0inputs+0outputs (395major+0minor)pagefaults 0swaps
>
>##### Cygwin 'find -ls' (NutCracker doesn't have a '-ls') C:\PROJECT>
>c:\cygwin\bin\time c:\cygwin\bin\find -ls | wc -l 2.79user 7.81system
>0:10.60elapsed 100%CPU (0avgtext+0avgdata 14480maxresident)k 25794