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Aliaksandr Lomau
September 17, 2015
Technology
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cpu-usage-measurement
Lighthouse Meetups, Minsk, Sept, 2015
Aliaksandr Lomau
September 17, 2015
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Transcript
CPU Usage Measurement
What Metrics Do We Have 1.Instructions per second 2.Instructions per
cycle 3.Performance per watt 4.FLOPS (floatting point per second)
How Does Processor Work?
How Does Processor Work? https://www.youtube.com/watch?v=cNN_tTXABUA
“Scott CPU”
“Scott CPU”
“Scott CPU” Addresses Instructions Parameters
“Scott CPU” Addresses Instructions Parameters
Inside of “Scott CPU”
Do You Want to See How CPU Works?
Do you want to see it? http://visual6502.org/
What Metrics Do We Have? 1.Instructions per second 2.Instructions per
cycle 3.Performance per watt 4.FLOPS (floatting point per second)
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
Instructions Per Cycle https://en.wikipedia.org/wiki/Instructions_per_cycle
Linux CPU Load http://blog.scoutapp.com/articles/2009/07/31/understanding-load-averages
Linux CPU Load
How to Load CPU?
How to Load CPU? Fork Bomb :(){ :|:& };: http://www.cyberciti.biz/faq/understanding-bash-fork-bomb/
http://www.brendangregg.com/ Brendan Gregg's Blog
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