AFAIR, flushing after each write was a workaround against some linux problem.

I think that flush is not exagerately expensive on linux, because there's a difference between flush (transfer data from user space buffers to kernel space buffers) and sync (transfer data to the disc).

In Win32 VM, the fileFlush and fileSync primitives do the same call to FlushFileBuffers.

The msdn tells it's a bad thing to repeatedly call FlushFileBuffers
https://msdn.microsoft.com/en-us/library/windows/desktop/aa364439(v=vs.85).aspx

I don't see such thing as a "cheap" flush on windows.

But do we really need to flush?
Couldn't we rather implement a linuxWorkaroundFlush: aFile method that would flush on linux and do nothing anywhere else?

2017-04-01 6:40 GMT+02:00 Martin Dias <tinchodias@gmail.com>:

Hi all. I rarely use Windows but this night��entered again to repeat the load test in Pharo.��

Cyril: I uninstalled the antivirus and excluded .changes and .images files in the "Windows Defender" (didn't know it exists). I may note some speed up but not much, so it wasn't THE solution.

Peter: I didn't check firewall but "Compiling methods..." is what stays on screen so it shouldn't be the network.

Eliot: this time I profiled it and can highlight from report that Leaves shows 91% in StandardFileStream>>primFlush:. I guess it isn't too surprising since file writing is expensive but it's a lot. However I didn't compare it yet with the respective report in linux. For the record, I attach the report.

Code evaluated:

AndreasSystemProfiler spyOn: [

Gofer new��

�� �� �� �� url: 'http://www.smalltalkhub.com/mc/ObjectProfile/Roassal2/main';

�� �� �� �� package: 'ConfigurationOfRoassal2';

�� �� �� �� load.

#ConfigurationOfRoassal2 asClass load.]

Regards

Mart��n

On Thu, Mar 16, 2017 at 8:03 PM, Cyril Ferlicot D. <cyril.ferlicot@gmail.com> wrote:

Le 16/03/2017 �� 05:11, Martin Dias a ��crit :
> And it takes >30 minutes to load Roassal2, while takes <1 minyte in
> Linux (same notebook). Script:
>

Do you have an anti-virus? If yes did you excluded the .changes and ombu
files from the files to check? If not the anti-virus might analyze your
file at each compilation.

--
Cyril Ferlicot

http://www.synectique.eu

2 rue Jacques Pr��vert 01,
59650 Villeneuve d'ascq France