JFFS2 behaviour when large number of files are created.

[Jan Vestby]

On Monday 18 October 2004 18:28, David Ho wrote:
> Hi all,
>
> I have a snapshot of the CVS MTD/JFFS2 code from Sept 22 patched into a
> 2.4.24 kernel.  In the process of running a varied set of applications on
> the system, a program was creating a large number of small files each less
> than 1KB.  The Linux card is powered up for a short period of time to dump
> data to persistent storage, then it is powered down for until the next data
> dump.  As the sytem is run, the mount is becoming slower to a point that
> the watchdog is reset the card.
>
> It appears that JFFS2 is bad for certain usage patterns.  Creating large
> number of files is one.  What other usage patterns should I avoid?
>
I have seen startup time is quite nonlinear with respect to the number of 
files per directory. You could try to restrict the size of directories.

regards
jan vestby