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THINC

Ricardo A. Baratto Network Computing Lab Columbia University. THINC. THIN CLIENTS FOR THE FUTURE or THin client InterNet Computing. Features. Fast Secure Hardware Cursor Video support Resizable Bandwidth scheduling. System Architecture. Server: Virtual video driver

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THINC

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  1. Ricardo A. Baratto Network Computing Lab Columbia University THINC

  2. THIN CLIENTS FOR THE FUTUREorTHin client InterNet Computing

  3. Features • Fast • Secure • Hardware Cursor • Video support • Resizable • Bandwidth scheduling

  4. System Architecture • Server: Virtual video driver • Translates driver commands to THINC commands: • RAW • FILL • BITMAP • TILE • Commands: • Initial compression almost free • Nice abstraction: manage and manipulate as needed

  5. Offscreen Awareness • Render offscreen, copy onscreen • Translation impossible: Everything is RAW!!! • Solution: • Capture commands everywhere and follow them

  6. Push with a twist • Server Pushes data to client but, • Server is aware of each client's responsiveness: • Does not block • Commands can be clipped and evicted

  7. Command Scheduling • Improve interactiveness • Particularly useful in slow networks • Multiqueue and Preemptive • Two traffic classes: • Real Time: Cursor, keystrokes, mouse drag, DnD • Normal: ordered by size • We don't like ads

  8. Resize • Small Screens • Bandwidth reduction • Magnify too! • Future: Resize & Clip

  9. Video S: really? T: yup. full motion, resizable, application transparent, low CPU overhead. AND, no need for GbE S: but... how? T: just get out of the way! S: eh? T: export the client's hardware to the server and just be a bridge S: <stares in disbelief as the video plays> catch: There's no sound. Yet.

  10. Results and Comparisons

  11. Features and Optimizations Latency Data Size Per page

  12. Web Data Size Latency Per page

  13. Video

  14. The Future • Generic Device Support • Sound for the video!!! • Network resilience • Collaboration • Games • ...

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