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Re: Proposal: Build timers


From: Jacob Hrbek
Subject: Re: Proposal: Build timers
Date: Tue, 23 Nov 2021 21:35:24 +0000

Skimming through the research that lily provided our builds are reproducible so 
the changes in cpu cycles requirements should be same with any post-build 
implementation disabled, but i recognize that different CPUs might use 
different configuration that influences the calculation and it will be a 
complicated task to account for all variables that influence the build across 
systems so instead of accurate measurements we should work with a sane 
tolerance for accuracy.

-- Jacob "Kreyren" Hrbek

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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Tuesday, November 23rd, 2021 at 8:09 PM, Liliana Marie Prikler 
<liliana.prikler@gmail.com> wrote:

> Am Montag, den 22.11.2021, 22:02 +0000 schrieb Jacob Hrbek:
> 

> > See the proposal in https://git.dotya.ml/guix.next/GUIX.next/issues/5
> > 

> > -- Jacob "Kreyren" Hrbek
> > 

> > Sent with ProtonMail Secure Email.
> 

> Your Pokémon analogy is extremely flawed. The same CPU at a different
> 

> clockrate does not perform the same task in the same amount of cycles
> 

> [1, 2].
> 

> [1] Kotla, Ramakrishna & Devgan, Anirudh & Ghiasi, Soraya & Keller, Tom
> 

> & Rawson, Freeman. (2004). Characterizing the impact of different
> 

> memory-intensity levels. 3 - 10. 10.1109/WWC.2004.1437388.
> 

> [2] Snowdon, David & Sueur, Etienne & Petters, Stefan & Heiser, Gernot.
> 

> (2009). Koala a platform for OS-level power management. Proceedings of
> 

> the 4th ACM European Conference on Computer Systems, EuroSys'09. 289-
> 

> 302. 10.1145/1519065.1519097.

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