Big bluebutton presentation

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Big bluebutton presentation

  1. 1. BigBlueButton OpenSource Web Conferencing
  2. 2. Why Web Conferencing? <ul><li>   </li></ul><ul><li>Online enrollments = enrollment 2 </li></ul>
  3. 3. Why Web Conferencing? <ul><li>   </li></ul><ul><li>Online enrollments = enrollment 2 </li></ul><ul><li>   + </li></ul><ul><li>  F2F Experience </li></ul>
  4. 4. Why Open source? <ul><li>Money </li></ul><ul><ul><li>GoToTraining  w/200 limit = $349/mo per class  or  $1596 per 16 week class </li></ul></ul><ul><ul><li>WebEX  25 limit $49/mo per class </li></ul></ul><ul><li>Market Volativity  </li></ul><ul><ul><li>DimDim bought by Salesforce </li></ul></ul><ul><ul><li>Blackboard bought Elluminate & Wimba </li></ul></ul>
  5. 5. Why BigBlueButton? <ul><li>DimDim  </li></ul><ul><ul><li>Used DimDim to some extent as a add-on to Moodle </li></ul></ul><ul><ul><li>Free un-hosted version = no recording </li></ul></ul><ul><ul><li>DimDim had a &quot;community&quot; OSS version you could host w/ recording </li></ul></ul><ul><li>Then we started having problems... </li></ul>
  6. 6. Why BigBlueButton? <ul><li>DimDim  </li></ul><ul><ul><li>OSS community version abandoned 3-2-2009 and left broken. </li></ul></ul>
  7. 7. Why BigBlueButton? <ul><li>DimDim  </li></ul><ul><ul><li>OSS community version abandoned 3-2-2009 and left broken. </li></ul></ul>
  8. 8. Why BigBlueButton? <ul><li>BigBlueButton  </li></ul><ul><ul><li>15 min install </li></ul></ul><ul><ul><ul><li>Virtualized Image (runs Ubuntu server) </li></ul></ul></ul><ul><ul><ul><ul><li>Vmware  </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Virtualbox  </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Etc...  </li></ul></ul></ul></ul><ul><ul><ul><li>Ubuntu 10.04 packages  </li></ul></ul></ul><ul><ul><ul><ul><li>  sudo apt-get install bigbluebutton </li></ul></ul></ul></ul>
  9. 9. Whats in BigBlueButton? <ul><li>BigBlueButton  </li></ul><ul><ul><li>Audio Conferencing via VOIP or Computer Mics </li></ul></ul><ul><ul><li>Screen broadcasting </li></ul></ul><ul><ul><li>Webcam broadcasting </li></ul></ul><ul><ul><li>Presentation conversion and Display </li></ul></ul><ul><ul><li>Whiteboard </li></ul></ul>
  10. 10. Whats NOT in BigBlueButton? <ul><li>BigBlueButton  </li></ul><ul><ul><li>Recording and Play back </li></ul></ul><ul><ul><ul><li>planned for 0.80 </li></ul></ul></ul><ul><ul><ul><li>Current release is 0.71a </li></ul></ul></ul>
  11. 11. BigBlueButton Tech-stuff <ul><li>BigBlueButton  </li></ul><ul><ul><li>Hardware Requirements </li></ul></ul><ul><ul><ul><li>2GB Ram </li></ul></ul></ul><ul><ul><ul><li>2+ Ghz Processor </li></ul></ul></ul><ul><ul><li>Bandwidth Requirements </li></ul></ul><ul><ul><ul><li>Y=40kbps </li></ul></ul></ul><ul><ul><ul><li>W= Number of webcams </li></ul></ul></ul><ul><ul><ul><li>U = Number of Users watching </li></ul></ul></ul><ul><li>Server Incoming BW = W * Y </li></ul><ul><li>Server Outgoing BW = W*(U-1)*Y </li></ul><ul><li>Ex:  1 Teacher (showing webcam) with 35 students watching </li></ul><ul><li>   Incoming BW = 1*40kbps = 40kbps </li></ul><ul><li>   Outgoing BW = 1 * 34* 40 = 1360kbps </li></ul>
  12. 12. BigBlueButton Tech-stuff <ul><li>BigBlueButton  </li></ul><ul><ul><li>Ports that need to be open on server. </li></ul></ul><ul><ul><ul><li>All TCP </li></ul></ul></ul><ul><ul><ul><ul><li>80  </li></ul></ul></ul></ul><ul><ul><ul><ul><li>9123 for desktop sharing </li></ul></ul></ul></ul><ul><ul><ul><ul><li>1935 for RTMP (Real Time Messaging Protocol) </li></ul></ul></ul></ul><ul><ul><li>How many simultaneous users? </li></ul></ul><ul><ul><ul><li>Bottleneck is Java heap size. Default (128mb) </li></ul></ul></ul><ul><ul><ul><li>At Default.. server crashed at 193 users in a classroom. </li></ul></ul></ul><ul><ul><ul><ul><li>T. Ram usage = 728MB  (525MB was Java) </li></ul></ul></ul></ul><ul><ul><ul><ul><li>CPU < 30% utilized  </li></ul></ul></ul></ul><ul><ul><ul><ul><li>BW = In: 8 Mbit/s Out: 112Mbit/s </li></ul></ul></ul></ul>

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