ZFS raid write performance?

[Karli Sjöberg]

Den 23 jun 2015 12:06 em skrev Quartz <quartz at sneakertech.com>:
>
> > I'd go with something similar to how the machine will be used in production.
>
> Hrmm, I was hoping for a quickie synthetic test just to gauge if the
> write speed was anywhere near as low as the network.

benchmarks/bonnie++

Good synthetic testing tool for filesystem performance.

/K

>
> > Also, ZFS has the ability to detect sequences of zeros and optimize the
> > writing of them.
>
> Yeah, I had a vague memory of something like that, which is why I asked.
>
> >Make sure the amount copied to the machine is, oh, say, at least
> > twice (or maybe thrice?) the amount of RAM in the server just to be sure
> > you've defeated any caching.
>
> That's... not going to be easy. I don't have that much data broken into
> files of that size kicking around yet. It won't necessarily be a
> "production" test either, given that most clients will be transferring
> only a few gigs over at a time.
>
>
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