When you have captured a vSCSI trace on a ESX/ESXi host (how to capture a vSCSI trace read this) you can import the trace in the VMware I/O Analyzer to analyse the data and replay the recorded workload on a other ESX/ESXi host. To do this follow the steps below.
- Download and install the VMware I/O Analyzer virtual appliance (VMware I/O Analyzer Installation and User’s Guide)
- Browse to the Analyzer web GUI
- Go to "upload VSCSI Trace" on the dashboard
- Click on "Browse" on the Upload from Local Disk section and upload your .csv file
- Click on "Upload Local file"
- Now go back to the dashboard
- Go to "workload Configuration"
- Now Add your ESX/ESXi host that you want to run the workload on (Enter the hostname or IP address and the Root Password)
- In the "Add Workload Entry" section select the VM you want to use to replay the captured workload on
- Select "Trace Replay" as the Test Type
- Select the right Trace file (the .csv just uploaded)
- Click on "Add" (You can add multiple Workload Entries and VM's to one single workload config file!)
(If you like you can adjust the Replay Pace, this is the factor that speedup's the replay e.g. factor 2 plays the trace 2X faster, 0.5 plays the trace 2X slower)
- Now go to the "Workload Configuration" section
- Enter a "Config Name"
- Enter the time you would like to run the workload
- Click on "Save as a New Config"
Now you have uploaded the captured trace and configured a workload configuration you have two options: you can either schedule the workload test or run it immediately.
To run the workload immediately click on "Run Now".
Schedule Workload test
- To schedule a Workload test in the dashboard go to "Test Scheduler"
- Select the right "Config Name"
- Enter the date and time you would like to run the workload test
- Enter the duration
- Click on "Schedule Test"
In the Test Manager section you can see any currently running or scheduled workload tests.
When the testrun is completed you can see the details and ouput in the I/O Analyzer Test Results. The output shows IOPS, Read/Write IOPS, MBPS, Read/Write MBPS, CPU details, Network details, Disk statistics and more.
Please feel free to let me know if you thought this post was helpfull by using the contactform.