Thanks for the information...BTW, Windoze isn't my OS of choice. I sometimes
use Gimp at work, where we are pretty much stuck with Windows (Unless I want to
go to the trouble of booting a Linux live CD). At home I have Linux and Mac
OSX (Gimp runs kinda funky on OSX...but since I have Linux, I don't worry about
it too much.)
--- On Wed, 1/7/09, Sven Neumann <s...@gimp.org> wrote:
> From: Sven Neumann <s...@gimp.org>
> Subject: Re: [Gimp-user] Win32: Use standard Windows File Open/Save dialog
> To: chrysalis_reb...@yahoo.com
> Cc: gimp-user@lists.xcf.berkeley.edu
> Date: Wednesday, January 7, 2009, 4:19 PM
> Hi,
>
> On Sat, 2009-01-03 at 18:16 -0800, Elwin Estle wrote:
> > I wonder if a problem I have had with saving files
> from Gimp in
> > Windows is somehow related. If I save direct to the
> local hard drive,
> > there isn't much of a problem. But if I try to
> save to say, a flash
> > drive plugged into the same computer running Gimp, or
> to a network
> > drive, then file save times get really long. Yes, you
> expect those
> > two situations to take a bit longer, but not that
> long. I can save
> > an .xcf file to the local drive and then transfer it
> to a flash drive
> > or a network drive and it is loads faster than trying
> to save directly
> > from Gimp. (which is what I typically do, save first
> to the local hard
> > drive, then transfer the file to the drive I actually
> want to store
> > the file on.)
>
> No, that is because your operating system of choice sucks
> at file I/O.
> Windows does not buffer access to flash and network drives.
> So an
> application writing a file with lots of file I/O calls will
> get
> miserable performance for slow drives. Copying the complete
> file to that
> drive will transfer the data in much larger blocks and thus
> yield
> reasonable performance. This is not the case on Linux for
> example. There
> the operating system will take care of combining many small
> file I/O
> operations into large buffer accesses.
>
> We might be able to work around this limitation by porting
> the XCF load
> and save routines and all file plug-ins to GIO, the VFS API
> that was
> recently added to GLib. Then we could use a
> GBufferedOutputStream which
> would do the buffering at the application level.
>
>
> Sven
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