JMeter - File upload and file download scenario

Question

I am using JMeter to do performance test a web page. I have a scenario for uploading a file and downloading a file. I need to load test uploading file and downloading file scenarios.

Can any one help me how to achieve these using JMeter.

Thanks, Raj

Answer 1

There are actually no difficulties in recording upload/download traffic with any HTTP sniffing tool and then emulate recorded requests in using jmeter.

In the simplest case you will get something like the following:

• Thread Group to setup number of test users and loops;
• for upload: 1 http POST request with Use multipart/form-data for POST = true - to sent file as part of request;
• for download: 1 http GET request for download + Save Responses to a file listener attached to it - to save requested file.

This will look like the following:

Thread Group
Number of Threads = X
Loop Count = Y
    . . .
    UPLOAD HTTP Request
    Method = POST
    Use multipart/form-data for POST = true
    -- Send Files with Request -- section:
    File Path = ${testFile}
    Parameter Name = datafile
    MIME Type = ...
    . . .
    DOWNLOAD HTTP Request
    Method = GET
        Save Responses to a file
        Filename Prefix = downloadTest_
        Variable Name = testFile
    . . .

Here you can find sample script implemented for schema given above: file-upload-download.jmx.

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The following posts may also appear useful:

• Testing load document functionality with JMeter.
• Performance testing: Upload and Download Scenarios with Apache JMeter
• How to Test Image Upload Functionality With JMeter
• JMeter Testing Multiple Random File Uploads
• Handling File Upload in JMeter

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You can also use custom jmeter-plugins.
These two seem extremely suitable for your tests:

• Response Times Over Time
• Bytes Throughput Over Time