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Re: Too fine design granularity leads to numerous macro/function/command
From: |
Emanuel Berg |
Subject: |
Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs. |
Date: |
Sat, 14 Aug 2021 02:42:35 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Hongyi Zhao wrote:
> It's not difficult for me or maybe some others, just too
> lazy to think for a while.
A lot of people like to think their lack of [whatever] is
because of laziness, however as for thinking of new reasons to
be lazy, the sure are hard at work. (I don't think that
applies to you but be careful with that word.)
> After all, we have so many
> convenient uinx tools and the excellent (but with
> performance penalty) pipe method at hand. Anyway, I've
> presented a comparison between pure AWK and UNIX toolchains
> as follows:
>
> $ time awk 'length > max_length { max_length = length; longest_line =
> $0 } END { print longest_line }' american-english-exhaustive
> correspond with someone about someone or something correspond with
> someone about someone or something
OK, great, so you got the one-liner to work, what did
you change?
> real 0m0.255s
> user 0m0.255s
> sys 0m0.003s
>
> $ time awk '{ print length($0) " " $0; }' american-english-exhaustive
> | sort -n | tail -1| cut -d ' ' -f2-
> correspond with someone about someone or something correspond with
> someone about someone or something
>
> real 0m1.794s
> user 0m1.853s
> sys 0m0.053s
>
> Obviously, the former is about 6 times faster than the latter.
Cool, try my command as well:
$ awk '{ print length($0) " " $0; }' $file | sort -n | tail -1
The reason the piped commands are slower are because of the
context-switches so instead of time(1) try this command for
all three:
$ perf stat sh -c 'COMMAND'
--
underground experts united
https://dataswamp.org/~incal
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., (continued)
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Arthur Miller, 2021/08/13
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Emanuel Berg, 2021/08/13
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Arthur Miller, 2021/08/13
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Emanuel Berg, 2021/08/13
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Hongyi Zhao, 2021/08/13
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs.,
Emanuel Berg <=
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Hongyi Zhao, 2021/08/13
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Emanuel Berg, 2021/08/13
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Arthur Miller, 2021/08/13
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Hongyi Zhao, 2021/08/13
- Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Emanuel Berg, 2021/08/13
Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Eli Zaretskii, 2021/08/13
Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs., Emanuel Berg, 2021/08/13