Skip to main content

statistics cache flash-pool show

Contributors
Suggest changes
PDFs

Flash pool throughput metrics

Availability: This command is available to cluster and Vserver administrators at the admin privilege level.

Description

This command continuously displays performance data for flash pool caches at a regular interval. The command output displays data in the following columns:

  • Aggregate - aggregate name.

  • Vserver - vserver name.

  • Volume - volume name.

  • Read Hit - percent of IOs serviced from a cache level.

  • Write Hit - percent of IOs serviced from a cache level.

  • Cache Used - SSD cache blocks used.

  • Read Blocks - read blocks.

  • Write Blocks - write blocks.

  • Rejects - cache rejects.

Parameters

[-aggregate <text>] - Aggregate

Selects the aggregate for which you want to display performance data.

[-vserver <vserver name>] - Vserver

Selects the vserver for which you want to display performance data.

[-volume <text>] - Volume

Selects the volume for which you want to display performance data.

[-sort-key <text>] - Column to Sort By

If this parameter is specified, the command displays statistics sorted by the specified column.

-interval <integer> - Interval

Specifies, in seconds, the interval between statistics updates. The default setting is 5 seconds.

-iterations <integer> - Iterations

Specifies the number of iterations the command runs before terminating. The default setting is 1. If the number is 0 (zero), the command continues to run until you interrupt it by pressing Ctrl-C.

-max <integer> - Maximum Number of Instances

Specifies the maximum number of flash pools to display. The default setting is 25.

Examples

The following example displays flash pool statistics:

cluster1::> statistics cache flash-pool show
cluster1 : 12/31/2013 16:00:04
Read Write
                               Hit   Hit       Cache    Read   Write
   Aggregate  Vserver  Volume  (%)   (%)        Used  Blocks  Blocks Rejects
 ----------- -------- ------- ---- ----- ----------- ------- ------- -------
       aggr1        - -total-    0     0           0       0       0       0
       aggr2      vs1    vol1    0     0           0       0       0       0
[...]