[Sugar-devel] poor man's mmap "sliding window" on Python 2.5.x

[Martin Langhoff]

On Tue, Jul 7, 2009 at 7:16 AM, Benjamin M.
Schwartz<bmschwar at fas.harvard.edu> wrote:
> huh.  I looked through python's mmap implementation [1] and there doesn't
> seem to be any caching or funny business going on.
>
> I wonder if it could be over-aggressive caching somewhere in jffs2, in an
> attempt to avoid repeatedly decompressing the same block.

Thanks for looking into this. I'll post the (trivial, really) repro
code I have later (I'm on a gruelling >35hr trip at the moment).

So far, tested on 8.2.x _on vfat partitions mounted from a USB device_
and on the local disk (ext3) on Ubuntu Hardy.

Have not tested it (yet) with data file on jffs2 as that's not the use
case I'm gunning for.



m
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