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msingh_kohli
Participant
January 22, 2013
Question

Concurrent Recordings on AMS 5.0

  • January 22, 2013
  • 2 replies
  • 878 views

I have AMS 5.0 on a Windows Server. It is dual core, 2GB RAM server. Not that optimal from hardware perspective. I am doing performance benchmarking on it from recroding perspective. For checking the concurrent recordings it can support, I used Flazr client as well as couple of manual recordings. For manual recordings I used NetStream AS class with record mode. Frame rate was default. Did this testing while sitting in same network, just to keep bandwidth issues to minimum.

What I observed is that AMS supported 3-4 concurrent recordings without any signficant loss of frames or delay. With more than 4 concurrent recordings, there was significant delay using Flaxr and loss in frame rate while doing manual recording. Count of 4 seems to be less despite a 2GB server. Now coming to points for discussion:

  1. What are the best possible configurations for supporting good no. of parallel recordings with decent frame rate? There is a configuration guide for AMS. Tried couple of relevant things, but didn't help out.
  2. Is AMS recording I/O intensive, Memory intenstive or CPU intensive? This will help me in better deciding infra needs. My guess is that it is I/O intensive.
  3. Is there any better way to do load testing of AMS apart from using Flazr and FMSCheck?

Thanks and awaiting some thought provoking comments

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2 replies

SE_0208
Participating Frequently
February 5, 2013

I am not aware of the client which you are talking about but what is your use case. I mean recording can be done via server-side code and you can use tools like ffmpeg to trigger publishing load and then recording it via server-side code.

msingh_kohliAuthor
Participant
February 6, 2013

Thanks SE. Part of functional use case is that I want to offer my clients to record videos and view the recorded videos. The recorded video stays on Media Server for couple of minutes and is eventually pushed to a Rackspace CDN. Once pushed to CDN, video is deleted from Media Server. So the role of FMS in my case is primarily recording. That is why I landed up in testing concurrent recordings so as to do capacity planning and optimization.

Will check out ffmpeg. Thanks for the suggestion.

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