HP Brocade BladeSystem 4/24 HP StorageWorks Fabric OS 6.x administrator guide - Page 349
Monitoring filter-based performance, Adding standard filter-based monitors
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Monitoring filter-based performance Filter-based performance monitoring counts the number of times a frame with a particular pattern is transmitted by a port. Filter-based monitoring is achieved by configuring a filter for a particular purpose. The filter can be a standard filter (for example, a SCSI read command filter that counts the number of SCSI read commands that have been transmitted by the port) or a user-defined filter customized for your particular use. For the 4/8 SAN Switch and 4/16 SAN Switch models, the maximum number of filters is 8 per port, in any combination of standard filters and user-defined filters. For the SAN Switch 4/32, 4/64 SAN Switch, SAN Switch 4/32B, 400 Multi-protocol Router, and DC Director models, the maximum number of filters is 12 per port, in any combination of standard filters and user-defined filters. For the 4/256 SAN Director models, the maximum number of filters is 12 per port, in any combination of standard filters and user-defined filters, except for the FC4-48 port blade. For the FC4-48 port blade: • The lower 16 ports (ports 0 through 15) have a maximum of 12 filter monitors per port, and 15 offsets per port for used defined monitors. • The middle 16 port (ports 16 through 31) have a maximum of 6 filter monitors per port, and 11 offsets per port for used defined monitors. • The upper 16 ports (ports 32 through 47) do not support filter monitors. The actual number of filters that can be configured on a port depends on the complexity of the filters. For trunked ports, the filter is configured on the trunk master. You can monitor filter-based performance using the perfMonitorShow command, as described in "Displaying monitor counters" on page 357. You can clear filter-based counters using the perfMonitorClear command, as described in "Clearing monitor counters" on page 361. Adding standard filter-based monitors Table 78 lists the commands for adding standard filter-based monitors to a port. Table 78 Commands to add filter-based monitors Telnet command Description perfAddReadMonitor Count the number of SCSI Read commands perfAddWriteMonitor Count the number of SCSI Write commands perfAddRwMonitor Count the number of SCSI Read and Write commands perfAddScsiMonitor Count the number of SCSI traffic frames perfAddIpMonitor Count the number of IP traffic frames You cannot add identical filter monitors to the same port. Two filter monitors are considered to be identical when they have the same values for the following items. • Filter monitor type • Owner (telnet, Web Tools, etc.) • Alias The following example adds filter-based monitors to slot 1, port 2 and displays the results: switch:admin> perfaddreadmonitor 1/2 SCSI Read filter monitor #0 added switch:admin> perfaddwritemonitor 1/2 SCSI Write filter monitor #1 added switch:admin> perfaddrwmonitor 1/2 SCSI Read/Write filter monitor #2 added Fabric OS 6.x administrator guide 351