{"id":26044,"date":"2022-12-15T05:15:29","date_gmt":"2022-12-14T23:45:29","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-why-is-it-faster-to-print-to-the-javascript-console-than-printing-to-c-console-closed\/"},"modified":"2022-12-15T05:15:29","modified_gmt":"2022-12-14T23:45:29","slug":"solved-why-is-it-faster-to-print-to-the-javascript-console-than-printing-to-c-console-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-why-is-it-faster-to-print-to-the-javascript-console-than-printing-to-c-console-closed\/","title":{"rendered":"[Solved] Why is it faster to print to the javascript console than printing to C++ console? [closed]"},"content":{"rendered":"

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You are testing it in two different environments. To make it a fair test, I decided to test it in similar environments (same host, 2GHz AMD A10-6800K processor as reported by cat \/proc\/cpuinfo<\/code>):<\/p>\n

Javascrtipt – using node<\/code> binary version 0.10.25 on Linux executed from bash prompt. Results were consistent around 83ms. I had to remove window.onload<\/code> wrapper, otherwise it was your code as is.<\/p>\n

C++ – I had to remove the inclusion of stdafx.h<\/code> to get it to compile. I also removed the call to getchar()<\/code> as it was unnecessary. I compiled with g++ 4.8.4 with defaults and again ran it from bash prompt. The results varied between 10ms and 20ms.<\/p>\n

When I redirected the standard output to a file, Javascript executed in 42ms, while C++ took 1 ms.<\/p>\n

Which is a result that would be in the range of what one would expect when comparing a native binary compiled vs just-in-time compiled languages for this type of workload. Note however, that when the code is I\/O heavy, as in your example, the difference will be largely negated, and if you test in different I\/O subsystems, the one with the faster I\/O will win regardless of the efficiency of the rest of the code.<\/p>\n

I believe the 2000 ms order of magnitude result you are observing in C++ is connected to the console you are using (Windows default CMD.EXE ?) being not very efficient with the standard output processing.<\/p>\n

Note, that I did verify with strace<\/code> that in both cases in my test I\/O was being done in a similar way – repeated calls to write()<\/code> – one per line. If one was buffering, for example, and the other was not, it could have made a difference big enough to negate the speed differences in the rest of the code.<\/p>\n<\/p><\/div>\n

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solved Why is it faster to print to the javascript console than printing to C++ console? [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"

[ad_1] You are testing it in two different environments. To make it a fair test, I decided to test it in similar environments (same host, 2GHz AMD A10-6800K processor as reported by cat \/proc\/cpuinfo): Javascrtipt – using node binary version 0.10.25 on Linux executed from bash prompt. Results were consistent around 83ms. I had to … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[324,541,333,325,4743],"class_list":["post-26044","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-console","tag-javascript","tag-performance","tag-performance-testing"],"yoast_head":"\n[Solved] Why is it faster to print to the javascript console than printing to C++ console? 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