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Which device blocksize on hostdrive for optimal client performance?

Posted: 2. Feb 2017, 00:38
by mabra
Hello !

I am using Virtualbox on a linux host with a ZFS filesystem, which's recordsize can
be software defined. What would be the optimal recordsize, probably even for
different client usage??

Thanks anyway,
Manfred

Re: Which device blocksize on hostdrive for optimal client performance?

Posted: 2. Feb 2017, 11:08
by mpack
4K is probably best.

Re: Which device blocksize on hostdrive for optimal client performance?

Posted: 7. Feb 2017, 09:42
by mabra
Hi !

Thanks for your reply.
mpack wrote:4K is probably best.
This is not, what I've expected - linux supports huge-pages since a long time and with
this, it allows much larger record sizes.
For use with ZFS, 4k is the worst case. perf starts a little with 8k, but better
would be 64k oder 128 k ...

Regards,
Manfred