Vdbench is a controlled I/O load simulation tool for storage systems developed by oracle as an open source. It works with Linux and Windows Written in Java and C Vdbench has three basic definitions in the configuration file. SD or storage definition: This defines what storage to use for the testing. WD or workload definition: This defines the workload parameter for the testing. RD or run definition: This defines storage, workload and run duration. Storage definition SD defines the storage used for the testing. Make sure you select the right storage or else everything on the selected disk could get destroyed. The SD name should be unique. sd=default,size=100g sd=sd1,lun=/dev/sdb0 sd=sd2,lun=/dev/sdb1,size=100g sd=sd3,lun=/dev/sdb2,size=200g Workload definition WD defines the workload used by the script for testing. The WD name must be unique. WD parameters include the following: sd – Test device seekpct – Percentage time to move location rdpct – Read percentage xfersize...
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