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Re: Using __builtin_expect (likely/unlikely macros)
From: |
Eli Zaretskii |
Subject: |
Re: Using __builtin_expect (likely/unlikely macros) |
Date: |
Sat, 20 Apr 2019 19:18:49 +0300 |
> Cc: address@hidden, address@hidden
> From: Paul Eggert <address@hidden>
> Date: Sat, 20 Apr 2019 09:11:30 -0700
>
> Eli Zaretskii wrote:
> > I consider 1.3% performance improvement as insignificant for all
> > practical purposes.
>
> When I'm talking about performance measurements I try to use the word
> "significant" in its usual scientific sense
> <https://en.wikipedia.org/wiki/Statistical_significance>.
Of course. I didn't mean to imply that the improvement was
insignificant statistically, only that it's insignificant in practice.
> Agreed that 1.3% is no big deal by itself, but if one can make a series of
> 1.3%
> performance improvements that build on each other, their effects multiply and
> the overall effort has worthwhile practical benefits.
Sure, but the effect on code readability also multiplies, right?
- Re: Using __builtin_expect (likely/unlikely macros), (continued)
- Re: Using __builtin_expect (likely/unlikely macros), Alex Gramiak, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros), Alex Gramiak, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros), Alan Mackenzie, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros), Alan Mackenzie, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Andy Moreton, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Eli Zaretskii, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros),
Eli Zaretskii <=
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Eli Zaretskii, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Óscar Fuentes, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Óscar Fuentes, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/20