2018-03-05 15:23:20 +03:00
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# sum_counter
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2019-02-04 23:19:06 +03:00
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Homebrewed bad benchmark tool.
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2018-03-05 15:23:20 +03:00
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2019-02-04 23:18:29 +03:00
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just sum every digit of every number.
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2019-09-25 23:13:20 +03:00
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e.g. 0 - 12 = 0 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + **1 + 0 + 1 + 1 + 1 + 2** = 51
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2018-03-05 15:23:20 +03:00
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2019-02-04 23:18:29 +03:00
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All versions use fork and tested on linux.
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2018-10-25 14:41:29 +03:00
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2019-09-20 18:17:52 +03:00
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GO version (Author: Mikhalich)
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2018-10-25 14:41:29 +03:00
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```Processing sequence from 0 to 1000000000
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Shard size: 250000000
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remainder: 0
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0 250000000
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250000001 500000001
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500000002 750000002
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750000003 1000000000
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Result: 40500000001
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real 0m4.112s
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user 0m15.037s
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sys 0m0.014s
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```
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C version
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```
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This system has 4 processors configured. Going to spawn 8 forks.
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Child 28454 was started. My job is 0 125000000
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Child 28455 was started. My job is 125000000 250000000
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Child 28456 was started. My job is 250000000 375000000
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Child 28458 was started. My job is 500000000 625000000
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Child 28457 was started. My job is 375000000 500000000
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Child 28461 was started. My job is 875000000 1000000000
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Child 28460 was started. My job is 750000000 875000000
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Child 28459 was started. My job is 625000000 750000000
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28453 - Sumumatoru kun handled 8 forks and got result 40500000001
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```
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Python version
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```
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Found 4 CPUs. Going to spawn 8 forks.
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proc # | from | till | summ | elapsed time per child
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----------------------------------------------------------
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0 | 0 | 124999 | 2732500 | 0.14
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1 | 125000 | 249999 | 2967500 | 0.16
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2 | 250000 | 374999 | 3157500 | 0.16
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3 | 375000 | 499999 | 3392500 | 0.16
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4 | 500000 | 624999 | 3357500 | 0.16
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5 | 625000 | 749999 | 3592500 | 0.16
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7 | 875000 | 1000000 | 4017501 | 0.16
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6 | 750000 | 874999 | 3782500 | 0.16
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Final result is 27000001
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real 0m0.471s
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user 0m1.337s
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sys 0m0.040s
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```
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