> 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
> 10-20%),
> > > 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.
I know about Informix, but I heard Oracle was moving away from raw
devices, and the speed improvement was only a few percentage points.
--
Bruce Momjian | http://www.op.net/~candle
pgman@candle.pha.pa.us | (610) 853-3000
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