Browse Prior Art Database

Dynamic Load Balancing in a Cluster of Loosely Coupled Systems

IP.com Disclosure Number: IPCOM000113107D
Original Publication Date: 1994-Jul-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Geise, DM: AUTHOR

Abstract

Disclosed is a program for performing dynamic load balancing in a cluster of loosely coupled systems.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 71% of the total text.

Dynamic Load Balancing in a Cluster of Loosely Coupled Systems

      Disclosed is a program for performing dynamic load balancing in
a cluster of loosely coupled systems.

      To balance the processing load in a system of loosely coupled
processors, a new remote login program has been implemented that
automatically and transparently logs a user into the system that is
least loaded.

      To login to the cluster, the user enters the new remote login
command (slogin) specifying any of the systems in the cluster.  The
slogin command prompts the user for a user ID and password (other
information like an account number can optionally be requested).
After the users provide this information, the following occurs:
following occurs:

1.  The slogin command contacts the specified system and asks for the
    name and/or address of the system that is currently least loaded.
    A daemon in the server receives this request and, in turn,
    queries all other servers in the cluster for their current load
    metrics.  Any of several metrics can be used (the metric that was
    implementd is based on a combination of processor class and the
    number of users currently logged into the system).

2.  After collecting this information from all of the systems in the
    cluster, the name and address of the least loaded system is
    returned to the slogin command.

3.  Finally, the slogin command establishes a connection with the
    least loaded s...