Great jffs2 speedup

[Artem B. Bityutskiy]

On Thu, 2005-09-29 at 22:19 -0600, Peter Grayson wrote:
> I was a little unsure about what you meant by "time to first write".
> How's this?:

Could you please create a 200MB file 'dedekind' (or larger, the larger -
the better), mount your FS, run 'time stat dedekind' and report how much
time did that command stat took.

Also, just after mount of a fully filled FS (again, the larger is your
FS, the better), run top, and look how much time your cpu is busy by
executing the GC thread. Basically, you can start writing only after the
GC thread has stopped working.

I am really curious about the results. 

And another fun is to create a directory with thousands of small (or
empty) files, remount the FS and run stat on the directory or enter it.
But this is not that fundamental problem and may be fixed.


-- 
Best Regards,
Artem B. Bityuckiy,
St.-Petersburg, Russia.