let's see here. 63 characters is an enormously long domain name and
you're saying in effect that each domain has an AVERAGE length of 63
characters. you're assuming 100k domains on a single machine, which
again seems awful high to me.
the argument about process size is less than convincing. a modern unix
will not attempt to read that same file directly from disk every time
qmail-smtpd is invoked, it will hit the buffer cache. every qmail-smtpd
instance will be reading from the same cache, and unless i'm too
mistaken, each instance will hit the same physical pages of memory.
further, it's unlikely (at least based on my experience) that every
qmail-smtpd will have to go through the entire rcpthosts file every
single time a message comes in, so the CPU argument is a little iffy
too.
i'll admit for the sake of argument that a huge rcpthosts file could
potentially cause problems, but one assumes that a sysadmin who has to
deal with a setup that large can be bothered to read the documentation
and see the notes about morercpthosts.
shag
----- Original Message -----
From: "Chin Fang" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thu 1 Jun 2000 8:44
Subject: Re: Rumours (was: Re: Recipe For A Good Book On Qmail)
> \Maex,
>
> > So please, measure, don't speculate.
>
> Get the following hardware, OS, and configuration file, then either
> the prstat(1) or top(1) will show you the size that I mentioned.
>
> o any SUN UltraSPARC IIi box.
> o SUN Solaris 8
> o a /var/qmail/control/rcpthosts with 100k entries
> each entry 63 chars long.
> o qmail-smptd compiled using GCC 2.95.2 (for Solaris 8)
>
> I observed the aforementioned sizes first hand during a simulated DOS
> test that we did a while back. The numbers are reported by both
> prstat(1) and top(1), they are not based on speculation. It's not
> nice to call other's statements "speculation" before you can verify
> the accuracy yourself.
>
> Regards,
>
> Chin Fang
> [EMAIL PROTECTED]
>
> > \Maex
> >
> > --
> > SpaceNet GmbH | http://www.Space.Net/ | Stress is
when you wake
> > Research & Development | mailto:[EMAIL PROTECTED] | up screaming
and you
> > Joseph-Dollinger-Bogen 14 | Tel: +49 (89) 32356-0 | realize you
haven't
> > D-80807 Muenchen | Fax: +49 (89) 32356-299 | fallen
asleep yet.
> >
>
>
