On 13 Apr 2016, at 15:51, Eric Blake <ebl...@redhat.com> wrote: > On 04/13/2016 05:41 AM, Alex Bligh wrote: >> >> On 13 Apr 2016, at 12:05, Alex Bligh <a...@alex.org.uk> wrote: >> >>>> Having a default for preferred block size sounds sane, although it might >>>> be better to switch it to 4096 (which is what most conversations seem to >>>> use today) rather than 512. >>> >>> +1 >> >> Actually doubly +1, as this in theory allows for O_DIRECT type optimisation >> with 4k page sizes. > > Telling clients to use a default preferred size of 64k (rather than 4k) > is still nice for O_DIRECT optimizations.
Sure. Default preferred size a *minimum* of 4k. I think Wouter is saying it shouldn't be 512. -- Alex Bligh
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