Re: [Freedos-kernel] Kernel 2040 released

2011-07-29 Thread dos386 
> > My silly FATPLUS.EXE maybe ???
> Was that the hack to go above 4 GB file size?

NO: http://www.fdos.org/kernel/#fatplus

> Evil...

Anything is good in this word ?

> > Almost documented: ATA-33 and XDMA
> UDMA, probably.

NO, XDMA 3.1.

> Better use a multiple of cluster size and a power of 2.

64 KiB ??? FYI: DOS extenders give better performance with 63.xxx KiB
than 32 KiB.


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Re: [Freedos-kernel] Kernel 2040 released

2011-07-29 Thread dos386 
SORRY for the repost:

Anyone can please upload the __correct__ "HISTORY.TXT" file for the
2040 kernel release on some place where it is easily discoverable ?
Both SF and fdos.org ?

http://sourceforge.net/projects/freedos/files/Kernel/2040/

http://www.fdos.org/kernel/

http://sourceforge.net/apps/mediawiki/freedos/index.php?title=Unstable_Kernel_Branch&action=history
 <<<--- {{delete}}

http://freedos.svn.sourceforge.net/viewvc/freedos/kernel/trunk/docs/history.txt?revision=1640&view=markup&sortby=date&pathrev=1640



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Re: [Freedos-kernel] Kernel 2040 released

2011-07-29 Thread Eric Auer 

Hi!

>>> My silly FATPLUS.EXE maybe ???
>> Was that the hack to go above 4 GB file size?
> NO: http://www.fdos.org/kernel/#fatplus

License evilness. Better to have the EDR DOS style
hack for files above 4 GB file size than "that".

Or of course turn LTOOLS into a drive letter driver
to support EXT2 filesystems directly in DOS :-D


>> Better use a multiple of cluster size and a power of 2.
> 
> 64 KiB ??? FYI: DOS extenders give better performance with 63.xxx KiB
> than 32 KiB.

That sounds VERY evil. Is the performance diff that big?
How about 64 kB? I think some hacks even support 128 kB
and to be honest, I would prefer a cache which joins I/O
to chunks of 64, 128, 256... kB over having huge cluster
sizes, because the latter means wasting a lot of space
if you have many small files. You can say space is cheap
today but you still lose performance in the further seek
unless of course you have a SSD instead of a harddisk.

Eric


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