Re: Allowing WAL fsync to be done via O_SYNC

* Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> [010315 11:07] wrote:
> "Mikheev, Vadim" <vmikheev(at)SECTORBASE(dot)COM> writes:
> > ... I would either
> > use fsync as default or don't deal with O_SYNC at all.
> > But if O_DSYNC is defined and O_DSYNC != O_SYNC then we should
> > use O_DSYNC by default.
>
> Hm. We could do that reasonably painlessly as a compile-time test in
> xlog.c, but I'm not clear on how it would play out as a GUC option.
> Peter, what do you think about configuration-dependent defaults for
> GUC variables?

Sorry, what's a GUC? :)

--
-Alfred Perlstein - [bright(at)wintelcom(dot)net|alfred(at)freebsd(dot)org]