Subject: Re: Swapping problems (was: Re: 1.2 features, again)
To: None <current-users@NetBSD.ORG>
From: None <is@Beverly.Rhein.DE>
List: current-users
Date: 07/03/1996 10:51:11
Followup to myself:

: Jukka Marin ( wrote:
: : Well, just heard from an ISP that they're going to replace their freebsd
: : news server with an l***x one because the current system is not stable under
: : high loads.  With 64 MB of RAM, NetBSD seems to be doing reasonably well as
: : a news server, except that the disk IO is slow because the system uses so
: : little RAM for the disk cache.
: Well... if you know what you're doing, you can always hard-code the
: buffer cache in your kernel by 
: options "NBUF=8192"
: to use 8192 buffer pages, which will... errr... use up 32 MB on the i386
: (isn't the pagesize 4096 bytes on them? check first.)
: Note that you'll also lose up to 32 MB of data in case of a system crash.

Btw, the nswbuf variable (which controls the number of swap buffers?) is
normally initialized to 75% of nbuf, so if you manimulate NBUF, you should
know this, or set NSWBUF independently.