Workloads
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What is Workload, The various types of workloads possible and the way of Selecting Workloads accordingly as per different systems and different workload criteria applicable.
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Workloads
- 1. PRESENTED BY: NOQAIYA ALI M.TECH CSE 1ST YEAR
- 2. ï‚ž A workload is anything a computer is asked to do ï‚ž Test workload: any workload used to analyze performance ï‚ž Real workload: any observed during normal operations ï‚ž Synthetic: created for controlled testing
- 3. TEST WORKLOAD FOR COMPUTER SYSTEMS ï‚žAddition Instruction ï‚žInstruction Mixes ï‚žKernels ï‚žSynthetic Programs ï‚žApplication Benchmarks
- 4. ADDITION INSTRUCTION Sole workload used, and the addition time was the sole performance metric
- 5. INSTRUCTION MIXES Specification of various instructions coupled with their usage frequency
- 6. KERNELS Kernel = nucleus Commonly used kernels: Sieve, Puzzle, Tree Searching, Ackerman’s Function and Sorting
- 7. SYNTHETIC PROGRAMS To measure I/O performance lead analysts ⇒ Exerciser loops Exerciser loops can be quickly developed and given to different vendors
- 8. APPLICATION BENCHMARKS ï‚žApplication dependant ï‚žEx: Debit-Credit Benchmark
- 10. Some well-known Benchmarks Sieve Used to compare, Microprocessors, Personal computers and high level languages Ackerman’s Function Used to assess the efficiency of the procedure calling mechanism in ALGOL-like languages.
- 11. Some well-known Benchmarks ï‚žWhetstone ï‚žLINPACK ï‚žDHRYSTONE ï‚žLawrence Livermore Loops ï‚žDebit-Credit Benchmark
- 12. SPEC Benchmark Suite Systems Performance Evaluation Cooperative (SPEC): Nonprofit corporation formed by leading computer vendors to develop a standardized set of benchmarks.
- 13. Some well-known Benchmarks GCC Espresso Spice 2g6 Doduc NASA7 LI Eqntott Matrix300 Fpppp Tomcatv
- 15. 4 Major Considerations in Selecting Workload ï‚žServices exercised ï‚žLevel of detail ï‚žLoading level ï‚žImpact of other components ï‚žTimeliness
- 16. Services Exercised ï‚ž SUT = System Under Test ï‚ž CUS = Component Under Study
- 17. Level of Detail ï‚žMost frequent request ï‚žFrequency of request types ï‚žTime-stamped sequence of requests ï‚žAverage resource demand ï‚žDistribution of resource demands
- 19. Timeliness ï‚žDifficult to achieve. ï‚žNew systems implying new workloads ï‚žUsers tend to optimize the demand