Fujitsu Host I/O Test

This test monitors the performance of each volume based on the interaction between the server/host requesting data to each volume. This helps the administrators identify the volume that is taking too long to service read and write requests.

Target of the test : Fujitsu Storage AF/DX

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each volume in a Fujitsu Storage AF/DX that is currently launched.

Configurable parameters for the test
Parameters Description

Test Period

How often should the test be executed.

Host

The nick name of the Fujitsu Storage AF/DX component for which this test is to be configured.

Port

Refers to the port at which the specified host listens to. By default, this is NULL.

Timeout

Specify the duration (in seconds) within which this test should time out in this text box. The default is 10 seconds.

Use SUDO

To run this test and report metrics, the eG agent install user should have permissions to run the rndc stats command and read from the statistics-file. If the eG agent install user possesses these privileges, then set the Use SUDO flag to No. If the eG agent install user does not have the required permissions, then do the following:

  • Edit the sudoers file on the target host and append an entry of the following format to it:

    <eG_agent_install_user>; ALL=(ALL) NOPASSWD:<Command>;

    For instance, if the eG agent install user is eguser, then the entry in the sudoers file should be:

    eguser ALL=(ALL) NOPASSWD: rndc stats

  • Then, save the file.
  • Finally, set the Use SUDO parameter to Yes.

High Security

This flag is applicable only when the target Linux host is monitored in the agentless manner. In highly secure environments, eG Enterprise could not perform agentless monitoring the Fujitsu Storage running on a Linux host using SSH. To enable monitoring of the Fujitsu Storage in such environments, set the HIGH SECURITY flag to Yes. It indicates that eG Enterprise will connect to the target Fujitsu Storage in a more secure way and collect performance metrics. By default, this flag is set to No.
Measurements made by the test

Measurement

Description

Measurement Unit

Interpretation

Read IOPS

Indicates the number of read operations performed on this volume per second.

Operations/sec

 

Write IOPS

Indicates the number of write operations performed on this volume per second.

Operations/sec

 

Read throughput

Indicates the rate at which this volume processes read requests.

MB/Sec

 

Write throughput

Indicates the rate at which this volume processes write requests.

MB/Sec

 

Read response

Indicates the average read response time taken by this volume.

Milliseconds

Compare the value of these measures across volumes to find out which volume is taking too long to respond to read/write requests.

Write response

Indicates the average write response time taken by this volume.

Milliseconds

Read cache

Indicates the percentage of read cache hit ratio in this volume.

Percent

 

Ideally, a high value of this measure is desired.

Write cache

Indicates the percentage of write cache hit ratio in this volume.

Percent