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Resource Model Reference

Segment Affecting Server

This indication is sent when there is a high work item shortage, but bytes per second on the redirector and the server are not high. It is assumed that the high work item shortage is due to a percentage utilization on the network segment.

The indication has the following attributes:

WorkItemShortages: The number of times that work items cannot be allocated to service incoming requests to the server
PercentNetworkUtil: The percentage of network utilization on the segment
NetworkSegment: The network segment being analyzed (Key attribute)

The indication is generated when the following thresholds are exceeded:

Threshold	Description	Default
High Percent Broadcast (HighPercentBroadcast)	This threshold must not be exceeded.	90
High Percent Bytes Per Second (HighPercentBytesSec)	To test for a high amount of bytes per second, a dynamic threshold value needs to be created based on the current bandwidth of the network interface card. Because there will be an internal dynamic calculation, the threshold value is a percentile that indicates what percentage of the bandwidth is considered too high. For example: 830 KBPS is considered high for 10 MB ethernet networks. This value is about 8 percent.	9
High Percent Utilization (HighPercentUtilization)	This threshold determines at what point the network utilization of the internal segment is too high.	40
High Work Item Shortages (HighWorkItemShortages)	This occurs when no work item is available, or no work item can be allocated to service the incoming request. A work item is used when the server service receives a request. HighWorkItemShortages indicates that the initial work items or maximum work items parameters may need tuning.	10

The following table shows the default settings for this indication:

Setting	Default
Send indications to Tivoli Enterprise Console	Yes
Send indications to Tivoli Business Systems Manager	No
Occurrences	6
Holes	1

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