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HP Service Manager: How Latency and Bandwidth Impact Performance

HPITSM ‎06-26-2013 10:37 AM - edited ‎09-25-2015 10:26 PM

Through our experience with customers, many performance issues are not caused by the product itself but caused by the infrastructure. And the #1 issue around the infrastructure is the network.  The two main characteristics of a network are latency and bandwidth.

How network latency impacts performance:

1.      Network latency between HP Service Manager (SM) servers and DB server must be minimumized (< 1 milli-second). Even a 1 ms latency between SM servers and the DB server could cause a perceived performance degradation and a 20 ms latency could render the system unusable.

2.      Network latency between SM servers must be minimumized (< 1 ms).

3.      Minimize the network latency between the Webtier and the SM server, as well as between client Browser and the Webtier. Greater than a 125 ms latency in these connections could cause a perceived performance degradation. We don’t recommend running a SM web client if the network latency exceeds 400 ms.


How network bandwidth impacts performance:

1.      The perceived delay is mostly affected by network latency and, as long as the network is not congested, only to a lesser degree by the network bandwidth.

2.      Network congestion can produce additional latency due to excessive network queuing and packet loss.

Best Regards,

Meng, Ling-Yan
Software Designer
Hewlett-Packard Company

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