MACROMEDIA COLDFUSION 4.5-ADMINISTRING COLDFUSION SERVER Manual page 226

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Configuring Peak and Gradual redirection load thresholds
For each cluster member, you configure a Peak load threshold and a Gradual
Redirection threshold. The Peak load threshold represents the maximum load the
server can handle before its performance degrades significantly or becomes
unavailable. The Gradual Redirection threshold represents the point at which HTTP
requests begin to be redirected to other less loaded members in a cluster so that the
server's performance does not degrade or become unavailable.
By default, the Peak load threshold is 90% and the Gradual Redirection threshold is
70%. These default settings adequately handle HTTP traffic going across most Web
sites. However, if your Web site is particularly processing intensive, you should lower
both threshold settings to better accommodate the increased load. For high traffic
sites, lower your Peak and Gradual Redirection thresholds to 80/60 or 75/55,
respectively.
To adjust load thresholds for a cluster member:
1. Open the ClusterCATS Explorer and select one of the servers contained in your
cluster.
2. Choose Properties from the Server menu. Alternatively, you can right mouse click
the server you've selected and select Properties.
The server's Properties dialog box appears.
3. Click the Load tab.
Administering ColdFusion Server