ZFS pool size to bearable free space amount ratio

[Martin Matuska]

With the recent merges from illumos (merged to 9-STABLE in r248571) this
should get somewhat better.

http://svnweb.freebsd.org/base?view=revision&revision=248369
https://www.illumos.org/issues/3552
https://www.illumos.org/issues/3564
https://www.illumos.org/issues/3578

More technical information on space maps:
https://blogs.oracle.com/bonwick/entry/space_maps

On 22.3.2013 16:10, Johan Hendriks wrote:
> Zeus Panchenko schreef:
> hi all,
>
> please, share your experience on the subject ...
>
> what is ZFS-pool-size to bearable-free-space-amount ratio?
>
> how much percents of total ZFS pool space has to be free before
> performance starts worsening?
>
> -- Zeus V. Panchenko                jid:zeus at im.ibs.dn.ua
> IT Dpt., I.B.S. LLC                      GMT+2 (EET)
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>
> It is best to keep the pool below 80%
> Above that, things starts to slow down.
>
> gr
> johan Hendriks
>
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-- 
Martin Matuska
FreeBSD committer
http://blog.vx.sk