3.1 System Performance

E-Class should perform effectively instantaneously for the following actions:

• send a chat message
• make drawing layer public
• drawing tools (i.e. drawing a line)
• instructor changing a student's settings

Some actions will take slightly longer (on the order of a few seconds):

• server to client push of the presentation (file load)
• save a file to disk
• Network lag and timeouts are acceptable

These time estimates are valid for the following reasonable size expectations:

• hundreds of slides (hopefully < 100 for a normal lecture)
• tens of layers per slide
• tens of drawing objects per layer
• No large data sets to process

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