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How is GNU `yes` so fast?

www.reddit.com Essays & writing Forum discussions Software engineering Class of 2022-06 Hall of Fame

Resurfaced independently across 3 calendar years, with breakout response in 2 of them.

submissions
6
submitters
6
observed span
2017–2022
peak thread · 334 comments
872 pts
latest 20+ return · 2022-06-04
142 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

Speed vs readability: https://github.com/coreutils/coreutils/blob/master/src/yes.c https://github.com/openbsd/src/blob/master/usr.bin/yes/yes.c

exxo_·872-point thread·

Someone fixed the bottleneck in pv to hit 123 GB/s [1]. Someone else managed to double yes performance [2] via vmsplice. [1] https://www.reddit.com/r/unix/comments/6gxduc/how_is_gnu_yes... [2] https://www.reddit.com/r/unix/comments/6gxduc/how_is_gnu_yes...

Duplicate of https://news.ycombinator.com/item?id=14542938

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
1028

reference only — not used in Hall rules or ranking

Total comments
398

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2017-06-13How is GNU `yes` so fast?First breakout · Best threadruleabidinguser872334
2017-06-13How is GNU `yes` so fast?tdwong51
2017-10-12How is GNU yes so fast?TrickyRick20
2019-07-22How is GNU `yes` so fast?cmsimike40
2019-10-29How is GNU ‘yes’ so fast?DougBTX30
2022-06-04How is GNU `yes` so fast? (2017)Hall induction · Latest 20+ point returnzbentley14263