Re: Jffs2 and big file = very slow jffs2_garbage_collect_pass

David Woodhouse
2008-01-17T23:22:21Z

On Thu, 2008-01-17 at 17:26 +0100, Jörn Engel wrote:
>
> Impressive! JFFS2 may be slow, but it shouldn't be _that_ slow. Not
> sure who cares enough to look at this. My approach would be to
> $ echo t > /proc/sysrq_trigger
> several times during those 12 minutes and take a close look at the
> code
> paths showing up. Most likely it will spend 99% of the time in one
> place.

I was going to suggest booting with 'profile=1' and using readprofile,
which is a slightly more reliable way of getting the same information.

--
dwmw2