Check disk throughput and latency

Contributors

You can check the disk throughput and latency metrics for cluster nodes to assist you in troubleshooting.

About this task

Advanced privilege level commands are required for this task.

Steps
  1. Change to advanced privilege level:

    set -privilege advanced

  2. Check the disk throughput and latency metrics:

    statistics disk show -sort-key latency

Example

The following example displays the totals in each user read or write operation for node2 on cluster1:

::*> statistics disk show -sort-key latency
cluster1 : 8/24/2015 12:44:15
                    Busy Total Read  Write  Read    Write   *Latency
  Disk       Node  (%)   Ops   Ops   Ops   (Bps)    (Bps)       (us)
------------ ----   ---- ----   ----- ----- ------   -----    -----

1.10.20      node2     4    5       3     2  95232  367616    23806
1.10.8       node2     4    5       3     2 138240  386048    22113

1.10.6       node2     3    4       2     2  48128  371712    19113
1.10.19      node2     4    6       3     2 102400  443392    19106

1.10.11      node2     4    4       2     2 122880  408576    17713