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CS533 Modeling and Performance Evaluation of Network and Computer Systems

CS533 Modeling and Performance Evaluation of Network and Computer Systems. Group Work. Index of Central Tendency. What Index of Central Tendency should be used to report? Response time (symmetrical pdf) Number of packets per day (symmetrical pdf) Number of packets per second (skewed pdf)

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CS533 Modeling and Performance Evaluation of Network and Computer Systems

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  1. CS533Modeling and Performance Evaluation of Network and Computer Systems Group Work

  2. Index of Central Tendency • What Index of Central Tendency should be used to report? • Response time (symmetrical pdf) • Number of packets per day (symmetrical pdf) • Number of packets per second (skewed pdf) • Frequency of keywords in a language • How would you summarize an average PC configuration? • CPU type • Memory size • Disk size • Number of peripherals (Jain, 12.8 and 12.9)

  3. Indices of Central Tendency and Dispersion • CPU times (in ms) for 11 workloads 0.74, 0.43, 0.24, 2.24, 262.08, 8960, 4720, 19740, 7360, 22440, 28560 • What index of central tendency to use? • What index of dispersion to use? • Disk I/O’s 22, 33, 14, 15, 42, 28, 33, 45, 23, 34, 39, 21, 36, 23, 34, 36, 25, 9, 11, 19, 35, 26, 16, 23, 34, 24, 38, 15, 13, 35, 28 • What index of central tendency to use? • What index of dispersion to use? (Jain, 12.10+12.13, 12.11+12.14)

  4. Clustering (1 of 2) Program Name Function CPU I/O TKB Linker 14 2735 MAC Assembler 13 253 COBOL Compiler 8 27 BASIC Compiler 6 27 Pascal Compiler 6 12 EDT Editor 4 91 SOS Editor 1 33 (Jain, 6.2, p.91)

  5. Clustering (2 of 2) Program Name Function CPU I/O TKB Linker 1 1 MAC Assembler .92 .09 COBOL Compiler .54 .01 BASIC Compiler .38 .01 Pascal Compiler .38 .00 EDT Editor .23 .03 SOS Editor .00 .01 (Normalized, no outliers)

  6. Graphics Charts with Mistakes (1 of 7) (Geoff Kuenning, 1998)

  7. Graphics Charts with Mistakes (2 of 7) (Geoff Kuenning, 1998)

  8. Graphics Charts with Mistakes (3 of 7) (Geoff Kuenning, 1998)

  9. Graphics Charts with Mistakes (4 of 7) (Geoff Kuenning, 1998)

  10. Graphics Charts with Mistakes (5 of 7) (Geoff Kuenning, 1998)

  11. Graphics Charts with Mistakes (6 of 7) (Geoff Kuenning, 1998)

  12. 1960 1980 Graphics Charts with Mistakes (7 of 7) Women in the Workforce (Geoff Kuenning, 1998)

  13. Sample Bad Graph (1 of 3) (Mark Bertolina) http://www6.tomshardware.com/graphic/20031229/vga-charts-09.html

  14. Sample Bad Graph (2 of 3) (Luba Sakharuk)

  15. Sample Bad Graph (3 of 3) (Luba Sakharuk)

  16. Sample Good Graph (1 of 3) Minard's depiction of the fate of Napoleon's army (Eric Tsung) http://ricardo.ecn.wfu.edu/SCS/Gallery/

  17. Sample Good Graph (2 of 3) William Playfair’s (1759-1823) Balance of Trade. (Eric Tsung)

  18. Sample Good Graph (3 of 3) (Eric Tsung) Florence Nightingale's Coxcomb

  19. Now the ugly! Lie factor of 14.8, 783%/53% (Eric Tsung) http://www.math.yorku.ca/SCS/Gallery/lie-factor.html

  20. (Lie factor of 2.8, Area is what we see.) (Eric Tsung)

  21. (Stretched axis) (Eric Tsung)

  22. Bad Graph (Edwin Mercado)

  23. (Edwin Mercado) http://www.bsos.umd.edu/hesp/newman/Newman_classes/Newman724/graphing6.pdf

  24. (Edwin Mercado)

  25. (Edwin Mercado)

  26. HINT Results - INT (Glenn McGuire)

  27. HINT Results - FLOAT (Glenn McGuire)

  28. HINT - Platforms Tested • Mac • HINT exec. from executables/serial/G3/hint_bin.sea.1.1.hqx/Hint_PPC_Double/Integer • OS X version 10.2.8, OS 9.3 Emulation • PowerPC G4, 700 MHz, 512 MB Memory • Linux • Compiled from source/serial/unix • Linux Redhat 9.0, cc 3.2.2 • Intel Pentium 4, 1.8 GHz, 256 MB Memory, 256k L2 Cache (Eric Tsung)

  29. (Eric Tsung)

  30. Quips vs. Time Graphs (Eric Tsung)

  31. Quips vs. Time Graph (Yatin Manjrekar)

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