Thank you.
Is there any documentation for the values?
Client-side means only statistics for the file remaining in the client
cache? Not lifetime statistics?
Are there any plans to work further on this feature?
I think of several use cases when knowing these stats.
Cold data could be moved to archive like slow tape without relying on
access time.
Hot blocks could be replicated or moved to faster caches and lot more
optimizations.
Best regards
Anna
Am 18.02.2023 um 21:57 schrieb Andreas Dilger:
Anna, there was a client-side file heat mechanism added a few years ago, but I
don't know if it is fully functional today.
lctl get_param llite.*.*heat*
llite.myth-ffff979380fc1800.file_heat=1
llite.myth-ffff979380fc1800.heat_decay_percentage=80
llite.myth-ffff979380fc1800.heat_period_second=60
And then "lfs heat_get <file>" to dump the file heat, it there haven't been
any good tools developed yet to list top heat files.
Cheers, Andreas
On Feb 7, 2023, at 08:56, Anna Fuchs via
lustre-discuss<lustre-discuss@lists.lustre.org> wrote:
Hello,
is there a way to see how many times a file has been accessed ever (like a heat
map)?
Thanks
Anna
--
Anna Fuchs
Universität Hamburg
https://wr.informatik.uni-hamburg.de
anna.fu...@informatik.uni-hamburg.de
https://wr.informatik.uni-hamburg.de/people/anna_fuchs
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--
Anna Fuchs
Universität Hamburg
https://wr.informatik.uni-hamburg.de
anna.fu...@informatik.uni-hamburg.de
https://wr.informatik.uni-hamburg.de/people/anna_fuchs
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