cpu-usage-measurement

Lighthouse Meetups, Minsk, Sept, 2015

Transcript

1. CPU Usage Measurement
2. What Metrics Do We Have 1.Instructions per second 2.Instructions per cycle 3.Performance per watt 4.FLOPS (floatting point per second)
3. How Does Processor Work?
4. How Does Processor Work? https://www.youtube.com/watch?v=cNN_tTXABUA
5. “Scott CPU”
6. “Scott CPU”
7. “Scott CPU” Addresses Instructions Parameters
8. “Scott CPU” Addresses Instructions Parameters
9. Inside of “Scott CPU”
10. Do You Want to See How CPU Works?
11. Do you want to see it? http://visual6502.org/
12. What Metrics Do We Have? 1.Instructions per second 2.Instructions per cycle 3.Performance per watt 4.FLOPS (floatting point per second)
13. MIPS = (Processor clock speed * Num Instructions executed per cycle)/(10^6) Instructions Per Second https://en.wikipedia.org/wiki/Instructions_per_second CPU Benchmarking: https://en.wikipedia.org/wiki/SPECint - two metrics: base and peak
14. Instructions Per Cycle https://en.wikipedia.org/wiki/Instructions_per_cycle
15. Linux CPU Load http://blog.scoutapp.com/articles/2009/07/31/understanding-load-averages
16. Linux CPU Load
17. How to Load CPU?
18. How to Load CPU? Fork Bomb :(){ :|:& };: http://www.cyberciti.biz/faq/understanding-bash-fork-bomb/
19. http://www.brendangregg.com/ Brendan Gregg's Blog
22. END