| From: | "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com> |
|---|---|
| To: | Sally Sally <dedeb17(at)hotmail(dot)com> |
| Cc: | <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: basic question (shared buffers vs. effective cache |
| Date: | 2004-05-10 19:55:49 |
| Message-ID: | Pine.LNX.4.33.0405101354520.16845-100000@css120.ihs.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
On Mon, 10 May 2004, Sally Sally wrote:
> Thanks much Scott, makes sense now.
>
> You said
>
> "Now, effective_cache_size sets nothing other than itself. I.e. it
> allocates nothing in memory. It is pretty much a big course setting knob
> that tells the planner about how much memory the kernel is using to cache
> its data"
>
> So how can you know how much memory the kernel is actually using to cache
> (Solaris)? and specifically is it something you can set/change and also
> watch as it is happening with some command like top (Linux shows how much is
> cached but I don't see that in Solaris).
I'm not sure. I think vmstat can tell you that.
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