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From Adrian Speteanu <>
Subject Re: What is best approach to design this kind of test?
Date Tue, 21 Aug 2012 08:14:23 GMT
HTTP Post can be multi-part. Therefore, you upload multiple files (and
other data) at the same time (a single request, multiple text parts).
Please check and make sure this is the case. Otherwise making concurrent
http requests (of whatever method) using the same session ID is tricky and
can't be done with a single thread. However I doubt it is the case.

--Adrian S

On Tue, Aug 21, 2012 at 3:33 AM, David Luu <> wrote:

> I may have need to design a test for benchmarking our photo upload
> architecture at my organization. Here's how the photo uploads from browser
> work:
> client selects multiple photos for HTML5 based multiple file upload element
> (single browse button w/ multiple file select option).
> on file upload element set with value(s), we use AJAX request to server to
> set up photo endpoints. It's a single HTTP GET request where we get back
> response that tells client side code where to upload the selected photo(s).
> The client then performs multiple file uploads (HTTP POSTs) in parallel
> (limited to 3 at a time by browser architecture).
> Would like to simulate this and scale up user count, assuming the average
> user selects say 3 photos to upload at same time. A thread group will scale
> the user count, but how do I perform HTTP sample requests in concurrently
> rather than serially in a thread group? I notice you can't do a thread
> group within thread group. I did notice that there is test fragment option
> that allows you to use samplers outside thread group, but that part won't
> scale beyond one user it seems. So how would I put this test together? Or
> will I have to make do with serial uploads with concurrent requests within
> a single user/thread not possible?
> Thanks in advance,
> David

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