Hi Utz,
>[..]
> I made a quick and dirty test running this:
>
> while time cp -a /usr/src/linux/drivers/ /mnt/xxx-`date '+%s'`; do sync; \
> df | grep mnt; done
>
I tried your crude test on my machine with the 512 MB partition. It also
shows
smooth behaviour. That made me a bit nervous, so I played around with
the configuration of the directory structure and gave agesystem another
run:
You find my results on the web
http://www.informatik.uni-frankfurt.de/~loizides/reiserfs/agesystem.html#gaugeveri
It seems that the sharp performance drop is influenced by the directory
hierachy
I am using. Why is the best behaviour for the least directories (100x1
means 100 dirs)?
I am also reproducing for the 4GB partition, but it will take some time.
The 100x50 test is alread there, compare it with the 100x100 test you
find at
http://www.informatik.uni-frankfurt.de/~loizides/reiserfs/agesystem.html#4part
The results seem also be highly dependent on the directory structure.
Will also
test 100x10 and maybe 100x1 too.
Constantin
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