The microbenchmark result for spawning short-lived concurrent process:
# Go 1.8.0
$ go build test.go ; for k in 5 50 500 5000 50000 500000; do echo -n $k; time ./test $k > /dev/null; done
5
CPU: 0.00s Real: 0.00s RAM: 2080KB
50
CPU: 0.06s Real: 0.01s RAM: 3048KB
500
CPU: 0.61s Real: 0.12s RAM: 7760KB
5K
CPU: 6.02s Real: 1.23s RAM: 17712KB # 17 MB
50K
CPU: 62.30s Real: 12.53s RAM: 207720KB # 207 MB
500K # this is 10x more!
CPU: 649.47s Real: 131.53s RAM: 3008180KB # 3 GB
# Elixir 1.4.2 (erts-8.2.2)
$ for k in 5 50 500 5000 50000 ; do echo -n $k; time elixir --erl "+P 90000000" test.exs $k > /dev/null; done
5
CPU: 0.53s Real: 0.50s RAM: 842384KB # 842 MB
50
CPU: 1.50s Real: 0.62s RAM: 934276KB # 934 MB
500
CPU: 11.92s Real: 2.53s RAM: 1675872KB # 1.6 GB
5K
CPU: 122.65s Real: 20.20s RAM: 4336116KB # 4.3 GB
50K
CPU: 1288.65s Real: 209.66s RAM: 6573560KB # 6.5 GB
You can find the code here. In terms of performance and memory usage, it's not really, but you can argue about anything else.
programming: the action or process of writing computer programs. | rants: speak or shout at length in a wild, [im]passioned way.
2017-11-07
2017-07-31
Tricks to be Motivated
Recently I being so much unmotivated with my work, and I think I know the reason, but anyway, these are the generic things to get things done:
- Buy a pen, and small notebook, seriously! Make a TODO list, break into very small things to be done in a day
- Have enough sugar and sleep, lack of sleep/concentration/focus is bad, as bad as alcohol addiction
- Do your tasks first before doing unimportant tasks (facebook, tweeting, watching movies, etc), make those unimportant things as reward
- Do not imagine yourself reaching the success, probably better imagining if you are fail and be afraid of it
- Your willpower is unlimited, and can be strengthened by doing more things that requires willpower, as willpower is contagious
- Surround yourself with people with same goals, or at least watch motivational people that work hard to reach their goals/dreams, be envious!
- Forgive yourself, guilt makes you want instant gratification that produces more guilt
- Do less decision, always go for option A, be courageous, set simple rules
- Walk/start first, motivation will comes later
I think that's it, these article summarized from videos about motivation and willpower I found on youtube.
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