Stop SSD cache performance modeling

04/20/2023 Contributors

The stop ssdCache performanceModeling command stops the performance modeling operation and displays the performance modeling data for the SSD cache.

Supported Arrays

This command applies to any individual storage array, including the E2700, E5600, E2800, E5700, EF600, and EF300 arrays, as long as all SMcli packages are installed.

Roles

To execute this command on an E2800, E5700, EF600, or EF300 storage array, you must have the Support Admin role.

Context

Before running this command, you must start the performance modeling operation with the start ssdCache performanceModeling command. Optionally, you can save the data to a file.

Syntax

stop ssdCache [ssdCacheName] performanceModeling [file="filename"]

Parameters

Parameter Description

Parameter	Description
`ssdCache`	The name of the SSD cache for which you want to stop modeling performance. Enclose the SSD cache name in square brackets ([ ]). If the SSD cache name has special characters or numbers, you must enclose the SSD cache name in double quotation marks (" ") inside square brackets.
`file`	The file path and the file name to which you want to save the performance modeling data. Enclose the file name in double quotation marks (" "). For example: `file="C:\Program Files\CLI\logs\ssdcacheperf.csv"` You can use any file name, but you must use the `.csv` extension.

ssdCache

The name of the SSD cache for which you want to stop modeling performance. Enclose the SSD cache name in square brackets ([ ]). If the SSD cache name has special characters or numbers, you must enclose the SSD cache name in double quotation marks (" ") inside square brackets.

file

The file path and the file name to which you want to save the performance modeling data. Enclose the file name in double quotation marks (" "). For example:

file="C:\Program Files\CLI\logs\ssdcacheperf.csv"

You can use any file name, but you must use the .csv extension.

Notes

This command returns the performance modeling information similar to this example. The size of your monitor determines how the information wraps and will affect how the information appears.

SSD Cache Name: my_cache
Start time: 4/18/12 2:38:26  PM IST
Stop time: 4/18/12 2:38:45 PM IST
Duration : 00:00:19

SSD Cache Performance Modeling Data (Response Time):

                        SSD Reads            HDD Reads           HDD Writes
            Overall     Avg.                 Avg.                Avg.
Cache       Response    Response    % of    Response    % of    Response    % of
Capacity    Time        Time        I/Os    Time        I/Os    Time        I/Os
186 GB      0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %
372 GB      0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %
557 GB *    0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %
558 GB      0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %
744 GB      0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %
931 GB      0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %
1117 GB     0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %
1303 GB     0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %
1489 GB     0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %
1675 GB     0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %
1862 GB     0 ms        0 ms        0.0 %   0 ms        0.0 %   0 ms        0.0 %

* = Current SSD cache physical capacity.


SSD Cache Performance Modeling Data (Cache Hit %):

Cache Capacity    Cache Hit %
186 GB            0 %
372 GB            0 %
557 GB *          0 %
558 GB            0 %
744 GB            0 %
931 GB            0 %
1117 GB           0 %
1303 GB           0 %
1489 GB           0 %
1675 GB           0 %
1862 GB           0 %
* = Current SSD cache physical capacity.

Minimum firmware level

7.84

11.80 adds EF600 and EF300 array support