Brocade MLX Series and Brocade NetIron XMR Diagnostic Guide ...

2Managing memory and CPU usageccp wait A 2713 13 1335 0.0cluster_mgr wait A 2713 0 7582 0.0statistcs wait A 2713 0 0 0.0hw_access wait A 2713 3 834977 0.3sfm_mon wait A 32 1 646545 0.2ntp wait A 2714 0 4913 0.0ospf_msg_task wait A 1 0 2019 0.0Sampling CPU usageThere are three commands that will show you how much CPU is being used for each task. The firsttwo commands, issued from the management module monitor, identify a task to be sampled, and arate at which to sample the task:• set sample-task • set sample-rate • show sampleWhen set sample-task and set sample-rate are configured, the show sample command samplesthe CPU for a period of time, and displays stack traces. The resulting information shows you whatthe CPU is doing, which can be especially helpful during periods of high CPU usage. The maximumnumber of traces that can be stored is 100. To display the stack traces during the sampling period,enter the show sample command.To stop the sampling, enter the set sample-rate 0 command.CPU memory show commandsThe CPU uses memory buffers to handle interprocess communication (IPC) and external packetssent and received by the management processor. Buffer pools can consist of 256 bytes, 512 bytes,1024 bytes, 1040 bytes, and 2048 bytes. All buffers are allocated from these pools on a best-fitbasis. The pBuf table maintains start and end addresses, size, stack trace, and number ofreferences for each allocated buffer.show bmSyntax: show bmThe show bm command determines if a task is suffering from a buffer leak and displays a generaloverview of the CPU buffer health, as shown in the following example.Brocade# show bmSIZE TOTAL FREE IN-USE OUT-OF-BUF BAD-FREE BAD-REF BAD-SIG-------------------------------------------------------------------256 1023 1022 1 0 0 0 0512 1024 1024 0 0 0 0 01024 1024 1024 0 0 0 0 02048 6144 128 6016 3446 0 0 010240 512 512 0 0 0 0 0-------------------------------------------------------------------Pool id = 0 Application Buffer Usage:Total buf used by appl = 1loop_detect (0x7 ) owns 1 buffersPool id = 1 Application Buffer Usage:Total buf used by appl = 0Pool id = 2 Application Buffer Usage:Total buf used by appl = 0Pool id = 3 Application Buffer Usage:20 Brocade MLX Series and Brocade NetIron XMR Diagnostic Guide53-1002426-02