new overview method performance

[Katsuhiro Kondou]

In article <19990731114025S.kondou at inn.do.mms.mt.nec.co.jp>,
	Katsuhiro Kondou <kondou at nec.co.jp> wrote;

} The new code almost works good but one problem.  Makehistory
} dumps core (bus error not segmentation fault) and I can't find
} how it comes.  It simply memset() within mmapped area in the
} buff.  Maybe I should know more about solaris.

I've committed new ovmethod.  You need to setup pathetc/buffindexed.conf
to use 'buffindexed' and ovmethod in inn.conf should be set to
buffindexed.  The buffer can be created like cycbuff.  And you
can see the usage of the buffer thru 'inndf -o'.  Note that the
buffer is not cyclic.  Allocated block in the buffer is never
used again until expireover frees.

The problem I wrote still exists.  You may not recreate overview
by makehistory yet.  But hopefully someone finds the problem and
reports how it comes.
-- 
Katsuhiro Kondou