Brief introduce to Iometer

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Iometer

Breif Introduce

Iometer is an I/O subsystem measurement and characterization tool for single and clustered systems.

Iometer contains two modules, iometer and dynamo. The iometer only runs on MS Windows OS and offer GUI so as to control dynamo. While dynamo can run on linux to establish the IO operation.

Every running copy in the Dynamo is called manager, every thread in manager is called worker.

Iometer guides Dynamo, compel IO operation to particular device.

Install Iometer

1. Iometer

1. Download lastest installation package.

2. Double click the package and just follow the installation process.

2. Dynamo

[Note: Edition must be the same as Iometer]

In the shell console:

1. wget http://sourceforge.net/projects/iometer/files/iometer-devel/2008-06-22-rc2/iometer-2008-06-22-rc2.src.tgz
2. tar –zxvf iometer-2008-06-22-rc2.src.tgz
3. cd iometer-2008-06-22-rc2/src
4. make all –f MakeFile-Linux.x86_64 （according to your OS)

Check if success:

1. Run the Iometer under MS Windows
2. cd ../iometer/iometer-2008-06-22-rc2/src/
3. ./dynamo -i [Windows ip] -m [Linux ip]
4. if success, Iometer should display linux's device.

 

How to use

1. Select worker and target

A manager is a computer, the number of workers represents the number of cpus.

Target represent the device on that machine.

2. Set access rules

Select or create rules in 'Access Specification Bar'

3. Set update frequency

Set update frequency in 'Result Display Bar'

4. Set runtime

Set runtime and loops in 'Test Setup Bar'

5. Run the test

Click the 'start' button, choose a file path to store the result.

6. End the test and See result

Click the 'stop' button to finish this test item. Click the 'stop all' button to finish all the tests

Test Case

• Set access rule (percentage of read/write, rand/sequential, size of file)
• Access particular device
• Multi access rules
• Repeatful access
• Loops and runtime managment

Export Result

• IOps
• Read IOps

• Write IOps

• MBps

• Read MBps

• Write MBps

• Transactions per second

• Connections per second

• Average Response Time

• Average Read Response Time
• Average Write Response Time
• Average Transaction Time

• Average Connection Time

• Maximum Response Time

• Maximum Read Response Time
• Maximum Write Response Time
• Maximum Transaction Response Time

• Maximum Connection Response Time

• Errors

• Read Errors

• Write Errors

• Bytes Read

• Bytes Write
• Read I/Os

• Write I/Os

• Connections

• Transactions per Connection

• Total Raw Read Response Time

• Total Raw Write Response Time
• Total Raw Transaction Response Time

• Total Raw Connection Response Time

• Maximum Raw Read Response Time

• Maximum Raw Write Response Time
• Maximum Raw Transaction Response Time

• Maximum Raw Connection Response Time

• Total Raw Run Time

• Starting Sector
• Maximum Size
• Queue Depth
• CPU Utilization
• User Time
• Privileged Time
• DPC Time
• Interrupt Time
• Proccessor Speed
• Interrupts per Second
• CPU Effect iveness
• Packets/Second
• Packet Errors
• Segments Retransmitted/Second

Useful Links

http://www.iometer.org/

http://www.bandaoit.cn/html/09/n-209.html