Specifications

15 – Configuring Distributed Server Architecture
354 R400
Distributed Server Tuning
The Tuning tab contains Cache and Communications Settings for the remote
server. These settings should only be changed by experienced technical
personnel in consultation with your local Technical Assistance Center.
To set tuning settings:
1 On the System Configuration Menu display, click Distributed Servers. The
Distributed Servers Configuration Summary opens.
2 Click the server alias name. The Distributed Server Configuration tab opens.
3 Click the Tuning tab.
You can tune the following settings for individual connections to publishing
servers:
Property Description
Cache flush time The intervals (in milliseconds) that the subscription list
is checked for references to old data. The default value
is 60 seconds.
Cache age time The amount of time (in milliseconds) old data remains
in the dynamic cache. The default value is 10 minutes.
Maximum subscription time The slowest subscription time (in milliseconds). The
default value is 10 seconds. If the subscription time is
slower than that specified, the subscribing server
switches from subscription to synchronous read (polls).
Maintaining a slow subscription is not efficient.
List fragment size The size of data packets sent over the network. The
default is 100 parameter values. This is tuned for
optimal performance on low bandwidth links.
Connection timeout The amount of time (in seconds) a packet of data can
remain on the network without being acknowledged.
When the timeout period expires, the connection is
broken and communication is initiated again.
Notification buffer interval The maximum amount of time (in seconds) a
notification can be delayed on the publishing server
before being sent to the subscribing server. The default
value is 2 seconds
Notification keep alive interval The maximum amount of time (in seconds) the
publishing server does not send packets to the
subscribing server. If there are no notifications within
this time, an empty keep alive packet is sent to the
subscribing server. The default value is 15 seconds.
plscpcg.book Page 354 Monday, May 28, 2001 10:11 AM