Teledyne LeCroy Sierra M6-4 SAS_SATA Protocol Analyzer User Manual - Manual (Page 178)

Teledyne LeCroy Performance Analysis
176 Sierra M6‐4 SAS/SATA Protocol Analyzer User Manual
Figure 2.168: SAS/SATA: Performance Analysis Definition Dialog
Note: When you use the Exerciser, channel 2 is not usable and is greyed out.
Choose Protocol
(SAS only)
Check the protocol check box(es) to select the protocol category:
 SSP for SCSI Commands
 STP for SATA Commands
 SMP for Management Commands
 Address Frame for Open and Identify
(SAS only)
Check the protocol check box to select the protocol category:
 STP
Analyzer Port
Check the Analyzer Port(s) to include in the performance calculation.
Link
Check the Link(s) to include in the performance calculation.
STP Port
Enter the STP port number for the STP port to include in the performance calculation.
SAS Source Address (SAS only)
Enter a SAS Source Address to include in the performance calculation.
SAS Destination Address (SAS only)
Enter a SAS Destination Address to include in the performance calculation.
Define Performance
Click the Performance Item check box in the Performance Items tab. Performance
measurement has the following categories:
 Link Usage:
 Bus Utilization (Ratio of frame time to update interval)
 Transmission Efficiency (Ratio of payload time to frame time)
 Throughput (Quantity of payload or useful data transferred during update
interval)
 Average Payload Size (Ratio of overall payload size to number of data frame)
 Completed Command Rate (Ratio of completed commands to total com‐
mands)
 Data Efficiency (Ratio of data payload time to data frame time)
 Event Counts: