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150 Administering advanced performance monitoring

Adding standard filter-based monitors

Table 24 lists the commands for adding standard filter-based monitors to a port.

The following example adds filter-based monitors to slot 1, port 2 and displays the results:

Adding custom filter-based monitors

In addition to the standard filters—read, write, read/write, SCSI frame and IP frame—you can create

custom filters to gather statistics that fit your needs.

To define a custom filter, use the perfaddusermonitor command. With this command, you must

specify a series of offsets, masks, and values. For all transmitted frames, the switch performs these tasks:

• Locates the byte found in the frame at the specified offset.

• Applies the mask to the byte found in the frame.

• Compares the value with the given values in the perfaddusermonitor command.

• Increments the filter counter if a match is found.

Table 24 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.

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

switch:admin> perfaddscsimonitor 1/2

SCSI traffic frame monitor #3 added

switch:admin> perfaddipmonitor 1/2

IP traffic frame monitor #4 added

switch:admin> perfmonitorshow --class FLT 1/2

There are 5 filter-based monitors defined on port 2.

KEY ALIAS OWNER_APP OWNER_IP_ADDR FRAME_COUNT

----------------------------------------------------------------

0 SCSI Read TELNET N/A 0x0000000000000000

1 SCSI Write TELNET N/A 0x0000000000000000

2 SCSI R/W TELNET N/A 0x0000000000000000

3 SCSI Frame TELNET N/A 0x0000000000000000

4 IP Frame TELNET N/A 0x0000000000000000