Subject: Re: BUFFERCACHE, PR 1903
To: Chris G Demetriou <>
From: Michael L. VanLoon -- <>
List: current-users
Date: 09/13/1996 21:01:08
>> 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?"

Well, depends on how thoroughly you document it, and how much it looks
like the same option in other vendors kernels, I guess.  Did Ultricks
use "BUFCACHE"?  I don't remember...

>	(3) if it's going to be done to one port, it _needs_ to be done
>	    to all of them.

Volunteers? :-)

>	(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.

There's no reason you couldn't default back to this if BUFCACHE (or
whatever) wasn't defined.  Say, for GENERIC kernels.

  Michael L. VanLoon                 
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