Fabric Manager Users Guide, Version 6.1, Revision A - QLogic
Fabric Manager Users Guide, Version 6.1, Revision A - QLogic
Fabric Manager Users Guide, Version 6.1, Revision A - QLogic
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2–Advanced <strong>Fabric</strong> <strong>Manager</strong> Capabilities<br />
Performance <strong>Manager</strong><br />
• Congestion – Associated with the port which is unable to process the<br />
incoming data rate. This port is causing backpressure and fabric congestion.<br />
The value is computed as a weighted sum, the weight of each counter is<br />
configurable. Some of the values such as Inefficiency percent are computed<br />
based on ratios of congestion to the link utilization.<br />
• SmaCongestion – Associated with the port which is unable to process the<br />
inbound VL15 traffic. This port is discarding VL15 SMA packets.<br />
• Security – Associated with the port which is attempting to be cracked and<br />
therefore packets are being sent to this port which violate security<br />
• Routing – Associated with the port which is receiving packets it cannot<br />
route. This is only applicable to switch ports on <strong>QLogic</strong> Switches (many 3rd<br />
party switches incorrectly tabulate this counter so it is ignored for<br />
non-<strong>QLogic</strong> switches).<br />
• Adaptive Routing – Associated with the port which is doing the adapting.<br />
This is only applicable to switch ports on <strong>QLogic</strong> 12000 series switches with<br />
6.0 or newer firmware versions. See “Adaptive Routing” on page 2-7 for<br />
more information.<br />
Congestion Statistics<br />
NOTE:<br />
The PortRcvRemotePhysicalErrors counter is not included in any of<br />
these conditions. This counter indicates packets which were marked<br />
bad due to discovery of a packet error during switch cut through. When<br />
such errors occur the counters included in Integrity will allow the issue<br />
to be pinpointed. In contrast this counter will occur for every hop along<br />
the route and is not very useful for the root causing the Integrity issue.<br />
Congestion is a weighted sum of five items:<br />
• XmitDiscard – Count of packets sent which were discarded due to<br />
congestion, link going down or invalid MTU/routing. Note that packets are<br />
only discarded in the event of extreme congestion.<br />
• XmitCongestionPct10 – Percentage of time that the outgoing port was<br />
congested and the outbound queue was deep. This value is only available<br />
for <strong>QLogic</strong> switches and requires PmaSwVendorEnable to be enabled. This<br />
is expressed as an integer *10. So for example 100% is reported as 1,000<br />
• XmitInefficiencyPct10 – Percentage of time that the outgoing port was<br />
congested when it was transmitting. Computed as<br />
XmitCongestionPct/(XmitCongestionPct+Utilization%) This value is only<br />
available for <strong>QLogic</strong> switches. This is expressed as an integer *10. So for<br />
example 100% is reported as 1,000<br />
IB0054608-01 B 2-31
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