slow writing on flash disk

**high_flyer** · 31st January 2006, 00:17

Hi,
just wanted to say I got a lead.
It looks like there are changes in the kernel about the FATFS, somthing to do with accessing the FS with a sync , which makes it slow.
See here:
http://www.ussg.iu.edu/hypermail/lin...07.3/1451.html
But its too late for me to read any more or try what they suggested there (changing the sync option in fstab).
But if someone can try it, or confirm it, before I get to try it tomorrw (err.. today) then please post!

Cheers.

**ir210** · 3rd February 2006, 06:27

Originally Posted by high_flyer

Hi,
just wanted to say I got a lead.
It looks like there are changes in the kernel about the FATFS, somthing to do with accessing the FS with a sync , which makes it slow.
See here:
http://www.ussg.iu.edu/hypermail/lin...07.3/1451.html
But its too late for me to read any more or try what they suggested there (changing the sync option in fstab).
But if someone can try it, or confirm it, before I get to try it tomorrw (err.. today) then please post!

Cheers.

any success, high_flyer? I still can't make it normal.

**high_flyer** · 3rd February 2006, 10:35

Didn't have time to test it yet (can you believe it??)
I am sooo busy its really crazy... got at 24:00 home last night, from work!!
I'll post as soon as I test it.
Did you try to take the the sync out of the mount command?
Dont forget to run sync before you take the USB stick out!

**ir210** · 5th February 2006, 17:27

it's autodetected by hal. I donot know how to change hal configuration. I've tried to remount it with async option, but it still slow.

I have the same problem from console and gnome (you are, codepoet, right it's not kde's fault). It only happen to my suse not kubuntu 5.10 (which hasn't been updated yet).

**wysota** · 5th February 2006, 19:46

could you show us the mount parameters frm that device?

**high_flyer** · 6th February 2006, 01:46

Yes it works.
My original mount is:
mount -t subfs -o fs=floppyfss,sync,procuid,nosuid,nodev,exec,utf8=t rue
And the modified one:
mount -t subfs -o fs=floppyfss,procuid,nosuid,nodev,exec,utf8=true

Simply take 'sync' out of the line.
It works fast as it should this way.
Don't forget to run sync before you take out the memory stick, to make sure any buffered data is flushed.