Jffs2 memory problem ..

[David Woodhouse]

On Tue, 2006-05-09 at 00:52 +0530, srideep.devireddy at wipro.com wrote:
>        We are using MPC 8247 . processor with 32MB sdram and we are
> using 2.4 Montavista linux kernel .when I make my board up ...I use a
> top and see my memory consumption is 8 Mb and 23Mb is free .After
> running the card with applications for almost 1 or 2 days ... when I
> reboot the card I am not able to run my application . If I then use a
> top command see memory consumption is 27MB and free is 3 Mb . only
> think
> I can do to run my applications is to reformat the file system and run
> the applications ....then it will run for another day . until it get
> to memory usage of 27 MB . Please do let me know if any one have any
> pointers on this ...which will solve my the Problem ...

Unless you are using the _standard_ JFFS2 code from the 2.4.32 kernel,
without any modifications, then you need to contact Montavista for
support -- only they can help you. 

Check the memory usage with 'slabtop' or manually reading
from /proc/slabinfo. 

If it's being taken up in JFFS2 data structures, then it could be a
known problem. Are you making lots of short writes to some files, like
syslog files?

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