Re: bg worker: general purpose requirements

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On Fri, Sep 17, 2010 at 11:21:13PM -0400, Robert Haas wrote:

[...]

> Wow, 100 processes??! Really?  I guess I don't actually know how large
> modern proctables are, but on my MacOS X machine, for example, there
> are only 75 processes showing up right now in "ps auxww".  My Fedora
> 12 machine has 97.  That's including a PostgreSQL instance in the
> first case and an Apache instance in the second case.  So 100 workers
> seems like a ton to me.

As an equally unscientific data point, on my box, a typical desktop box
(actually a netbook, slow CPU, but beefed up to 2GB RAM), I have 5
PostgreSQL processes running, which take away about 1.2 MB (resident) --
not each one, but together!. As a contrast, there is *one* mysql daemon
(don't ask!), taking away 17 MB. The worst offenders are, by far, the
eye-candy thingies, as one has become accustomed to expect :-(

What I wanted to say is that the PostgreSQL processes are unusually
light-weight by modern standards.

Regards
- -- tomás
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