[zfs-discuss] "du -ksh ." taking hours to complete

Durval Menezes durval.menezes at gmail.com
Wed Nov 14 09:46:52 EST 2018


Hello Gregor,

On Wed, Nov 14, 2018 at 11:34 AM Gregor Kopka (@zfs-discuss) via
zfs-discuss <zfs-discuss at list.zfsonlinux.org> wrote:

> Am 14.11.2018 um 14:30 schrieb Edward Ned Harvey (zfsonlinux) via
> zfs-discuss:
> > Who knows, in your personal situation where you have a particular
> > usage pattern and never reboot, having a SSD cache and "secondary
> > cache=metadata" might be just as good for you personally as the
> > special vdev would. *shrugs*. YMMV.
> IIRC: L2ARC is a round-robin cache, as soon as enough data has been
> written for it to wrap around it'll start discarding the entries that
> had been written in the last pass.
>

I'm pretty sure L2ARC is *not* round-robin but rather, well, ARC (just like
it says in the name), so it would keep the (meta)data most
recently/frequently used on the cache according to the ARC algorithm, no?

Cheers,
-- 
   Durval.




>
> Gregor
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