Hello,

I purchased a 1 GB-USB stick which works fine, in general.

However, I would like to format it with another filesystem
than the old VFAT (MSDOS) (the main reason is the unusable 
file-permission flags).

I tested EXT2/3 and Reiser-FS, which worked both, but with dramatic
speed drops.
 
VFAT gave about 8 MB/sec for writing (which is the manufacturers speed)
and a little more for reading.

For ext2 (without journal) it dropped to 0.2 MB/sec !!!

Is there somthing that I missed, or are there other recommended fs
for USB-sticks ?

regards

wolfk

-- 
PS: **** please, put the word 'nospam' anywhere in the subject line !! ****
----------------------------------------------------------------------------
      Wo bleibt die Mathe-Reform, die endlich das '=' abschafft ?
----------------------------------------------------------------------------
Wolfgang Koehler                                       wolfk@gfz-potsdam.de
GeoForschungsZentrum Potsdam, Germany, Projekt CHAMP	Tel: (0331)288-1738

Wolfgang K�hler wrote:
> Hello,
> 
> I purchased a 1 GB-USB stick which works fine, in general.
> 
> However, I would like to format it with another filesystem
> than the old VFAT (MSDOS) (the main reason is the unusable 
> file-permission flags).
> 
> I tested EXT2/3 and Reiser-FS, which worked both, but with dramatic
> speed drops.
>  
> VFAT gave about 8 MB/sec for writing (which is the manufacturers speed)
> and a little more for reading.
> 
> For ext2 (without journal) it dropped to 0.2 MB/sec !!!
> 
> Is there somthing that I missed, or are there other recommended fs
> for USB-sticks ?

mount option "async" is recommended.


--Frank Elsner

On Fri, 25 Nov 2005 13:28:08 +0100, Wolfgang K�hler wrote:

> Hello,
> 
> I purchased a 1 GB-USB stick which works fine, in general.
> 
> However, I would like to format it with another filesystem
> than the old VFAT (MSDOS) (the main reason is the unusable 
> file-permission flags).
> 
> I tested EXT2/3 and Reiser-FS, which worked both, but with dramatic
> speed drops.
>  
> VFAT gave about 8 MB/sec for writing (which is the manufacturers speed)
> and a little more for reading.
> 
> For ext2 (without journal) it dropped to 0.2 MB/sec !!!
> 
> Is there somthing that I missed, or are there other recommended fs
> for USB-sticks ?
> 
> regards
> 
> wolfk

Did you try mounting EXT2 filesystem with the 'noatime' option?

PoD wrote:

> Did you try mounting EXT2 filesystem with the 'noatime' option?

yes, I used this option without much progress.
The only way to get faster transfer seemed 'async' mode.

What confuses me, why does sync-mode works well for VFAT
but not for ext2-FS ?

regards

wolfk

-- 
PS: **** please, put the word 'nospam' anywhere in the subject line !! ****
----------------------------------------------------------------------------
      Wo bleibt die Mathe-Reform, die endlich das '=' abschafft ?
----------------------------------------------------------------------------
Wolfgang Koehler                                       wolfk@gfz-potsdam.de
GeoForschungsZentrum Potsdam, Germany, Projekt CHAMP	Tel: (0331)288-1738

Wolfgang K�hler wrote:
> PoD wrote:
> 
> 
>>Did you try mounting EXT2 filesystem with the 'noatime' option?
> 
> 
> yes, I used this option without much progress.
> The only way to get faster transfer seemed 'async' mode.
> 
> What confuses me, why does sync-mode works well for VFAT
> but not for ext2-FS ?

FAT does not keep records on other times than last change
to the file.

The native Unix file systems are ill suited for Flash media
due to the many write operations inherent in the processing.

-- 

Tauno Voipio
tauno voipio (at) iki fi