Subject: Re: BUFFERCACHE, PR 1903
To: Michael L. VanLoon -- HeadCandy.com <firstname.lastname@example.org>
From: Chris G Demetriou <Chris_G_Demetriou@ux2.sp.cs.cmu.edu>
Date: 09/13/1996 23:55:51
> I applied PR 1903, the one that lets you set the BUFFERCACHE percent
> setting as a define in the kernel config file. Why hasn't this been
> integrated? (Lack of time/attention, I would guess.)
Probably lack of time/attention.
quick comments on the patch (i just looked at it again):
(1) s/BUFCACHE/BUFCACHEPCT/ or something, and same with
'bufcache'. "so, i set options BUFCACHE=20. That means
that I get 20 buffer caches, right?"
(2) the diffs need to be cleaned up, e.g. spacing, KNF, and
(3) if it's going to be done to one port, it _needs_ to be done
to all of them.
(4) it's annoying to no longer be able to have the "N percent
of the first M megs, P percent of the rest" function,
to better support small-memory systems.
(5) if the user specifies an out-of-range value:
(a) it should not be silently adjusted, in my opinion
(i.e. issue a #warning), and
(b) (in my opinion) if you are going to adjust it, i'd
say it should be clamped, not reset, i.e. if < 5
then it's 5, and if > 95 then it's 95... of
course, if you're issuing a warning, this isn't
nearly as important, and may just be a waste of