Re: Reiser4

Josh Berkus wrote:
> Pierre,
>
> >     Are there any plans in a future Postgresql version to support a special
> > fsync method for Reiser4 which will use the filesystem's transaction
> > engine, instead of an old kludge like fsync(), with a possibility of
> > vastly enhanced performance ?
>
> I don't know of any such in progress right now.  Why don't you start it?  It
> would have to be an add-in since we support 28 operating systems and Reiser
> is AFAIK Linux-only, but it sounds like an interesting experiment.
>
> >     Is there also a possibility to tell Postgres : "I don't care if I lose 30
> > seconds of transactions on this table if the power goes out, I just want
> > to be sure it's still ACID et al. compliant but you can fsync less often
> > and thus be faster" (with a possibility of setting that on a per-table
> > basis) ?
>
> Not per-table, no, but otherwise take a look at the Background Writer feature
> of 8.0.

Actually the fsync of WAL is the big performance issue here.  I added a
TODO item about it.

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