[lustre-discuss] Access times for file (file heat)

[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 at 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.fuchs at informatik.uni-hamburg.de
> https://wr.informatik.uni-hamburg.de/people/anna_fuchs
> 
> 
> 
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