Monitoring using mmpmon

You can use mmpmon to monitor AFM and AFM DR.

  1. To reset some statistics on a gateway node, run the following commands:
    echo "afm_s reset" | mmpmon
    echo "afm_s fset all" | mmpmon
  2. To reset all statistics, run the following command:
    mmfsadm afm resetall
  3. To view the statistics, run the following command:
    echo afm_s | mmpmon -s -r 0 -d 2000

    This command shows statistics from the time the Gateway is functioning. Every gateway recycle resets the statistics.

    The following example is from an AFM Gateway node. The example shows how many operations of each type were executed on the gateway node.

    c2m3n10 Tue May 10 09:55:59 0]~# echo afm_s | mmpmon
    	
    mmpmon> mmpmon node 192.168.2.20 name c2m3n10 afm_s s OK
    Name               Queued     Inflight   Completed  Errors     Filtered   ENOENT
    lookup             0          0          1          0          0          0
    create             0          0          20         0          10         0
    remove             0          0          0          0          10         0
    open               0          0          2          0          0          0
    read               0          0          0          0          1          0
    write              0          0          20         0          650        0
    BytesWritten = 53320860 (50.85 MB) (26035.58 KB/s) BytesToWrite = 0 (0.00 KB)
    Queue Delay (s) (min:0 max:19 avg:18)
    Async Msgs (expire:50 force:0 sync:4 revoke:0)
    NumMsgExecuted = 715
    NumHomeconn    = 292
    NumHomedisc    = 292
    NumRPOMisses   = 1
The fields are described in the following table.
Table 1. Field description of the example
Field name Description
BytesWritten The amount of data synchronized to home.
BytesToWrite The amount of data in queue.
QueueDelay The maximum delay experienced by operations before sync to home.
NumMsgExecuted The number of operations executed at home.
NumHomeconn The number of times home reconnected after disconnection.
NumHomedisc The number of times home disconnected.
NumRPOMisses Related to RPOs for AFM primary fileset.