Re: Reiser4 status: benchmarked vs. V3 (and ext3)

Valdis.Kletnieks
2003-07-27T03:13:05Z

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On Sat, 26 Jul 2003 17:21:37 +0200, Daniel Egger said:
> > Also reiserfs does not use compression, that would be very nice of it
> > :), because flash has limited number of erase cycles per block (in range
> > 100.000)
>
> I don't see what the compression has to do with the limited number of
> erase/write cycles.

It's a subtle point - let's say you have a 32K blob of data and a 4K block/
erase/whatever size on the flash. If you write it uncompressed, then 8 blocks
are going to get an erase cycle. If however you can compress it down to 12K
(not at all unusual for text), then only 3 blocks get an erase cycle, and the
other 5 blocks get to live longer...

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