Add warning about 'maxusers' and large memory configurations in vm.sgml.

1 files changed, 6 insertions, 3 deletions

diff --git a/handbook/vm.sgml b/handbook/vm.sgml
index 2afbfbd805..2abd8a32d7 100644
--- a/handbook/vm.sgml
+++ b/handbook/vm.sgml
@@ -1,4 +1,4 @@
-<!-- $Id: vm.sgml,v 1.2 1999-02-08 20:21:36 dillon Exp $ -->
+<!-- $Id: vm.sgml,v 1.3 1999-02-24 22:51:42 dillon Exp $ -->
 <!-- The FreeBSD Documentation Project -->
 
 <sect><heading>The FreeBSD VM System<label id="vm"></heading>
@@ -170,11 +170,14 @@
 	configuration options can be found in /usr/src/sys/i386/conf/LINT.
 	<p>
 	In a large system configuration you may wish to increase 'maxusers'.
-	Values typically range from 10 to 256.
+	Values typically range from 10 to 128.  Note that raising maxusers
+	too high can cause the system to overflow available KVM resulting in
+	unpredictable operation.  It is better to leave maxusers at some
+	reasonable number of add other options, such as NMBCLUSTERS, to 
+	increase specific resources.
 	<p>
 	If your system is going to use the network heavily, you may want
 	to increase NMBCLUSTERS.  Typical values range from 1024 to 4096.
-	Each cluster represents around 16KBytes so do not overdo it.
 	<p>
 	The NBUF parameter is also traditionally used to scale the system.
 	This parameter determines the amount of KVA the system can use to