Re: definiing deduplication (was: Re: deduplicating file systems: VDO with Debian?)
On Wed, 2022-11-09 at 14:44 +0100, didier gaumet wrote:
> Le 09/11/2022 à 14:25, hw a écrit :
>
> > I don't think it was, see https://docs.freebsd.org/en/books/handbook/zfs/
> >
> > I does mention performance, but I remember other statements saying that was
> > designed for arrays with 40+ disks and, besides data integrity, with ease of
> > use
> > in mind. Performance doesn't seem paramount. Also see
> > https://wiki.gentoo.org/wiki/ZFS
>
> > Well, the question is what you mean by performance. Maybe ZFS can
> > deduplicate
> > faster than VDO, but eating tons of RAM and/or having to replace all the
> > hardware may not be a kind of performance one would be looking for.
>
> My bad: I'm french and my english is not as fluent as I would like it to
> be ;-)
>
> I was using the word "performance" here as I would have in french (same
> word), thinking of technical abilities (speed, scalability and so on)
> without realizing that in english in the particular context of computer
> science that means primarily speed (if I understand correctly) :-)
Hm, no, performance refers to how well something is up to something, like
fulfilling some requirements or achieving some goal. If something is fast, it
can be performant. If something doesn't require much RAM, it can as well be
performant, may it be slow or not. It all depends on what you want from
something.
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