HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.1.x administrator guide (5697 - Page 341

The output is sorted based on the data rate of each flow. If you do not specify the number of flows to display, then the command displays the top 8 flows or the total number of flows, whichever is less. The command can display a maximum of 32 flows. For example, to display the top 5 flows on for domain 1 in WWN (default) format: perfttmon --show dom 1 5 To display the top flows on domain 2 in PID format: perfttmon --show dom 2 pid switch:admin> perfttmon --show dom 2 pid Src_PID Dst_PID MB/sec 0xa908ef 0xa05200 6.926 0xa05200 0xa908ef 6.872 0xa905ef 0xa05200 6.830 0xa909d5 0xa05200 6.772 Limitations of Top Talker monitors • Top Talker monitors cannot detect transient surges in traffic through a given flow. • You cannot install a Top Talker monitor on a mirrored port. • Top Talker can monitor only 10,000 flows at a time. • Top Talker is not supported on VE_Ports, EX_Ports, and VEX_Ports. Trunk monitoring To monitor E_Port (ISL) and F_Port trunks, you can set monitors only on the master port of the trunk. If the master changes, the monitor automatically moves to the new master port. If a monitor is installed on a port that later becomes a slave port when a trunk comes up, the monitor automatically moves to the master port of the trunk. • For Fabric OS 3.x switches, monitoring can be set on slave ISLs. • End-to-end monitors are not supported for ISLs. • For F_Port trunks, end-to-end masks are allowed only on the F_Port trunk master. Unlike the monitors, if the master changes, the mask does not automatically move to the new master port. • 4/8 SAN Switch, 4/16 SAN Switch models support eight filter-based monitors for trunks. • The SAN Switch 4/32, 4/64 SAN Switch, SAN Switch 4/32B, 8/8 SAN Switch, 8/24 SAN Switch, 8/40 SAN Switch, 8/80 SAN Switch, 400 Multi-protocol Router, 4/256 SAN Director and DC Director switches support 12 filter-based monitors for trunks. Displaying monitor counters Use the perfMonitorShow command to display the monitors on a specified port. For end-to-end counters, you can display either the cumulative count of the traffic detected by the monitors or a snapshot of the traffic at specified intervals. The command format is: perfmonitorshow --class monitor_class [slotnumber/]portnumber [interval] Fabric OS 6.1.x administrator guide 341