Thumb drive ext2 slow write speed

[Willy K. Hamra]

Nils Kassube wrote:
> Nigel Ridley wrote:
>> I just got a new SanDisk 2GB cruzer micro and formatted it to ext2
>> (using qtparted). I then proceeded to copy just under 600MB of data ---
>> it took more than 10 minutes!
> 
> 10 min. would be 1MB/s write speed. What is the rated write speed of that 
> device? I think 1MB/s is nothing unusual for a cheap flash disk. My FAT32 
> formatted (no-name) USB stick would take about 7 minutes write time for a 
> 600MB file - that would be a similar (yes, I know waiting >3 more minutes 
> is an eternity :) speed to yours.
> 

yes, 1 MB/s is a very good speed, i get worse and on FAT32 drives!
if you want a fast FS you might try reiserfs, there are ways to put it
with no journaling, and i've heard it's pretty faster than other FS,
though i have never tried reiser before!

>> What's going on? Is it because of ext2? 
>> Should I reformat it as ext3?
> 
> I don't think ext3 would help. With ext3 you have additional writes for 
> the journal, i.e it would be even slower.
> 

and i would never advice anyone to use journaled file systems on flash
drives or solid state HDs, since the huge amount of data written to the
same place on the disk (the journal) will eventually fry out the area,
and really decrease the life of the disk.

>> This is on a Dell Inspiron 1525 (with USB 2).
> 
> The limit is the low write speed of the flash devices, not the USB speed.
> 
> 
> Nils
> 


-- 
Willy K. Hamra
Manager of Hamra Information Systems
Co. Manager of Zeina Computer & Billy Net
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