Comments on DBA Dojo: IOzone benchmark vs EC2

The -g option is the size of the file which you wa...

2009-08-01T21:00:50.714-07:00

The -g option is the size of the file which you want iozone to use.

The reason for using a file larger than the amount RAM (physical memory) is to force the OS to read from disk rather than from memory.

Most OS (Win/Unix/Linux/OSX) will cache a file in memory if it will fit, as it is faster.
By making the file larger than memory it forces the OS to read the disk which

Hi Roobaron, I dont really understand how -g opti...

2009-07-29T06:45:20.591-07:00

Hi Roobaron,

I dont really understand how -g option works with IOZone.

Its says " Maximum File size, Generally double the size of your RAM"

Cud you please help me on this

--
Britto

Grab the zip file I postedhttp://s3.amazonaws.com/...

2008-03-31T15:36:00.000-07:00

Grab the zip file I posted
http://s3.amazonaws.com/dbadojo_benchmark/iozone_benchmark_ec2.zip

I generated the 3D graphs and the surface area (heatmap) graphs in excel.

To generate either, you will need to cut and paste the IO Zone output (it will output in csv format) into excel.<

hi,can you tell me how to generate the graphs afte...

2008-03-31T11:31:00.000-07:00

hi,
can you tell me how to generate the graphs after running iozone?