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Re: Proposal: Build timers


From: zimoun
Subject: Re: Proposal: Build timers
Date: Thu, 25 Nov 2021 11:23:35 +0100

Hi,

On Thu, 25 Nov 2021 at 04:03, Jacob Hrbek <kreyren@rixotstudio.cz> wrote:

> My theory is designed with tolerance of <5 min with max tolerance of
> =10 min with methods that I am confident will get us within <30 sec
> assuming sufficient amount of data to construct the variables. 

Please back this claims with concrete numbers.

Because I am sure it is not the case.  For an instance, consider the
package julia@1.6.3 built on Berlin: 1061.9+11122.3=12184.2 seconds [1]
vs 1183.4+10081.1=11264.5 [2] vs 1040.7+9559.4=10600.1 [3], therefore,
the worst case is:

  (12184.2 - 10600.1)/60 = 26.4016666667 min

The variance here is obvious.  And it totally depends on the value
itself; the error is relative.

LFS are using *exactly* what you are proposing and they document the
deviation.  Please follow the 2 links there [4].


I am available to share my overall timings for some packages.




1: <https://ci.guix.gnu.org/build/1654363/log/raw>
2: <https://ci.guix.gnu.org/build/1740157/log/raw>
3: <https://ci.guix.gnu.org/build/1793062/log/raw>
4: <https://lists.gnu.org/archive/html/guix-devel/2021-11/msg00157.html>


All the best,
simon




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