Virtual Memory Consumption of Cyrus IMAPd

[Igor Brezac]

On Mon, 19 Jul 2004, Lenny wrote:

> Ya, I could do that. Would there be a gain for me to compile the latest from
> source and using the ldap mech as opposed to the "-n0" flag suggestion
> that was
> made?

-n0 is very taxing on the OS specially if you have a lot of users.
saslauthd/ldap does not leak (so you do not have restart saslauthd
every so often) and it is much faster than pam/ldap.

--
Igor

>
> Lenny
> --
>
> "Wisdom is to a man an infinite Treasure" - Anonymous"
>
>
> Quoting Igor Brezac <igor at ipass.net>:
>
> > On Mon, 19 Jul 2004, Lenny wrote:
> >
> >> Fedora Core 1's saslauthd doesn't seem to like me setting the mech to
> >> ldap. This
> >> works great on Core 2, but I'm not in a postition to migrate all the cyrus
> >> servers to Fedora Core 2 as of yet. So this is a temporary problem for me :)
> >
> > Can you build saslauthd from the source...
> >
> > -Igor
> >
> >>
> >> Lenny
> >> --
> >>
> >> "Wisdom is to a man an infinite Treasure" - Anonymous"
> >>
> >>
> >> Quoting Igor Brezac <igor at ipass.net>:
> >>
> >> > pam is known to leak memory on some OSs.  This is really not saslauthd
> >> > problem.  Have you tried to use saslauthd built-in ldap mech?
> >> >
> >> > -Igor
> >> >
> >> > On Mon, 19 Jul 2004, Lenny wrote:
> >> >
> >> >> Using the pam mech which in turn is authing against an openldap server.
> >> >>
> >> >> I've tried the -n0 flag that was just mentioned in hopes this solves
> >> >> the problem
> >> >> :)
> >> >>
> >> >> Lenny
> >> >> --
> >> >>
> >> >> "Wisdom is to a man an infinite Treasure" - Anonymous"
> >> >>
> >> >>
> >> >> Quoting Igor Brezac <igor at ipass.net>:
> >> >>
> >> >> > What saslauthd authentication mechanism are you using?
> >> >> >
> >> >> > -Igor
> >> >> >
> >> >> > On Mon, 19 Jul 2004, Lenny wrote:
> >> >> >
> >> >> >> Not sure about RHEL, but on Fedora Core 1 the saslauthd process
> >> >> eats tons of
> >> >> >> swap until eventually there's no memory left. Great fun! This of
> >> >> >> course stops
> >> >> >> cyrus from being able to process imap and pop logins (if you're using
> >> >> >> saslauthd
> >> >> >> for authentication). A simple restart usually fixes this
> >> >> particular problem.
> >> >> >>
> >> >> >> This may or may not be related to what you're seeing, but I figured
> >> >> >> I'd throw
> >> >> >> this out there.
> >> >> >>
> >> >> >> Lenny
> >> >> >> --
> >> >> >>
> >> >> >> "Wisdom is to a man an infinite Treasure" - Anonymous"
> >> >> >>
> >> >> >>
> >> >> >> Quoting Mohamed Magdi Abbas <abbasmm at longwood.edu>:
> >> >> >>
> >> >> >> > I'm running cyrus impad(v 2.2.6), used to run 2.1.16, on
> >> RHEL 3.0 and
> >> >> >> > noticed that the amount of swap space free is decreasing. When I was
> >> >> >> > running v2.1.16, the swap free would decrease until the
> >> kernel oom(out
> >> >> >> > of memory) killer would activate and start killing processes which
> >> >> >> > essentially grinds the system to a halt. I doubt that this
> >> is normal.
> >> >> >> > Could this point to a memory leak in cyrus. Just for note, I
> >> have not
> >> >> >> > yet experienced this with the latest version, but the swap free is
> >> >> >> > decreasing.
> >> >> >> >
> >> >> >> > By the way I'm using simons RPMS from invoca.ch. Could someone
> >> >> shed some
> >> >> >> > light on this. Anything will help...
> >> >> >> >
> >> >> >> > Mohamed Magdi Abbas
> >> >> >> > Systems Engineer
> >> >> >> > Longwood University
> >> >> >> > abbasmm at longwood.edu
> >> >> >> >
> >> >> >> > ---
> >> >> >> > Cyrus Home Page: http://asg.web.cmu.edu/cyrus
> >> >> >> > Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
> >> >> >> > List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
> >> >> >>
> >> >> >>
> >> >> >> ---
> >> >> >> Cyrus Home Page: http://asg.web.cmu.edu/cyrus
> >> >> >> Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
> >> >> >> List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
> >> >> >>
> >> >> >
> >> >> > --
> >> >> > Igor
> >> >>
> >> >>
> >> >>
> >> >
> >> > --
> >> > Igor
> >>
> >>
> >>
> >
> > --
> > Igor
>
>
>

-- 
Igor
---
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