Jim C. Nasby wrote:
> Yeah, my assumption has been that the only way to tell the difference
> would be by timing, but I don't know how practical that is. Since
> gettime() or whatever EXPLAIN ANALYZE uses is apparently very expensive,
> perhaps there's some other alternative. Perhapse the timing in
On Thu, Apr 13, 2006 at 03:38:04PM -0400, Bruce Momjian wrote:
> > Is there any pratcical way to tell the difference between a page comming
> > from the OS cache and one comming from disk? Or maybe for a set of pages
> > an estimate on how many came from cache vs disk? There's some areas
> > where
Jim C. Nasby wrote:
> On Mon, Apr 10, 2006 at 12:02:56PM -0700, Luke Lonergan wrote:
> > Hannu,
> >
> > On 4/10/06 2:23 AM, "Hannu Krosing" <[EMAIL PROTECTED]> wrote:
> >
> > >> The cost of fetching a page from the OS is not really much of an
> > >> overhead,
> > >
> > > Have you tested this ?
>
On Mon, Apr 10, 2006 at 12:02:56PM -0700, Luke Lonergan wrote:
> Hannu,
>
> On 4/10/06 2:23 AM, "Hannu Krosing" <[EMAIL PROTECTED]> wrote:
>
> >> The cost of fetching a page from the OS is not really much of an
> >> overhead,
> >
> > Have you tested this ?
>
> I have - the overhead of fetching
