[ros-kernel] VFAT Optimalizations

[Richard Campbell]

Hey filip, you have NT4 installed?  Why not use NT4 as a baseline for 
comparison?

Filip Navara wrote:

> Casper Hornstrup wrote:
>
>> Very nice job filip. Do you have some numbers on the speedup. We like 
>> numbers ;-)
>>  
>>
> Here are some numbers.
>
> Environment:
>    VMware Workstation 4.5.1
>    Host - Windows XP SP1 + All released hotfixes, Athlon 1700+ @ 
> 1,47Ghz, 256Mb RAM, HDD Maxtor 60Gb 7200rpm
>    Guest - ReactOS, Shell: cmd.exe, 128Mb RAM, Virtual HDD 1Gb 
> formated using FAT32
>
> Compilation ROS on ROS (GCC 3.4.1, Binutils 2.15.90, ROS_USE_PCH=no, 
> VERBOSE=yes):
>    With optimized VFAT driver - 3 hrs 9 min
>    With original VFAT driver - 3 hrs 36 min
>
> OpenOffice 1.1.1 first stage setup (measured from starting setup.exe 
> to displaying the welcome dialog of second stage setup)
>    With optimized VFAT driver - 0 min 42 sec
>    With original VFAT driver - 2 min 10 sec
>
> Not that impressive, but it's still an improvement especially in 
> loading times of big applications (OpenOffice, ~50 DLLs loaded) and 
> setup programs. I still see some places where some optimalizations can 
> take place, but I'm not sure if I'll work on that in short term.
>
> - Filip
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