On Fri, 2 Jun 2000, Bruce Momjian wrote:
> > > Most think that raw devices are a pain and offer little performance
> > > improvement and lots of portability and coding problems.
> > I don't know how much it is a performance improvement (someone say
> > but Bruce is probably right, it is a huge work and with dependence on
> > hardware & system implementation.
> > We already discussed about it --- it is hacker's archive.
> One intresting issue is that commerical databases that recommended raw
> spaces are moving away from them, which helps us to know that the
> raw device benefit must be pretty small.
I beg to differ. Informix (the system my shop uses) blazes using raw
devices; Oracle (from what I understand) does also. Sybase (a resource
hog), on the other hand, seems to prefer cooked file systems.
> > IMHO now is not in PG background for features like I/O raw or on-line
> > replication. It needs better storage layout and tablespace feature.
> Vadim is working on storage layout for 7.2, and replication should be
> done after WAL is implemented.
> Bruce Momjian | http://www.op.net/~candle
> pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
> + If your life is a hard drive, | 830 Blythe Avenue
> + Christ can be your backup. | Drexel Hill, Pennsylvania
Max Pyziur BRAMA - Gateway Ukraine
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