lzo2 shows insane speed gap

[Christian Weisgerber]

Bruce Cran <bruce at cran.org.uk> wrote:

> I'm running 8.0-CURRENT amd64 here on a Turion64 X2 machine. Without
> malloc debugging (malloc.conf -> aj) 'make test' takes 25s; after
> removing malloc.conf thus turning on debugging, it takes over 10
> minutes.

Wow!  That.  Is.  It.

Toggling malloc debugging option J makes the "slow" machines "fast"
and vice versa.

> > Athlon 64 X2 5200+ 2.6 GHz,      FreeBSD 8.0-CURRENT amd64   ~60 min

19 seconds.

I guess that falls under the "obvious" configuration differences
to check, but since it usually doesn't cause a significant slowdown
I completely forgot about it.  Embarrassing.

But still.  Two orders of magnitude?  That is a pathological case.

-- 
Christian "naddy" Weisgerber                          naddy at mips.inka.de