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

Download lastest installation package.
Double click the package and just follow the installation process.

2. Dynamo

[Note: Edition must be the same as Iometer]

In the shell console:

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

Check if success:

Run the Iometer under MS Windows
cd ../iometer/iometer-2008-06-22-rc2/src/
./dynamo -i [Windows ip] -m [Linux ip]
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