Brocade Multi-Service IronWare Administration Guide (Supporting R05.6.00) - Manual (Page 129)

Multi-Service IronWare Administration Guide 111
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Histogram information
5
The sequence parameter displays sequential task execution information. Sequential execution of
task information is recorded when a task’s hold time is greater than the specified threshold value.
The task sequence is maintained for a specific period of time and stored in a cyclic buffer, so the
oldest record is overwritten by a new record.
When the taskname name variable is specified, the histogram information for the specified task
only, is displayed. The above threshold-value variable specifies the display of histogram information
for tasks whose maximum hold time is above the specified threshold level.
The trace parameter displays high CPU condition task traces.
Clearing task sequence information
To clear CPU histogram sequence information, enter the following command:
Brocade(config)# clear cpu histogram sequence
Syntax: clear cpu histogram sequence
Displaying buffer histogram information
The main objective of the buffer histogram is to see if there was any buffer exhaustion in the last
few seconds (10-60sec). Buffer usage is collected when available buffers in the 2K buffer size pool
fall below the reserved limit. The threshold limit is defined in terms of BM allocate request type.
Show commands
To display buffer histogram information, enter the following command:
TABLE 25 Threshold values for different buffer allocation request types.
Buffer Pool BM Allocate Request Type Buffer allocated if available buffers
2K OS, SDS, RCON Above 0
2K TX, RX Critical Above 128
2K IPC High Above 512
2K Data High Above 700
2K IPC Low Above 850
2K RX Low Above 1024