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Re: Guix pull speed
From: |
Simon Tournier |
Subject: |
Re: Guix pull speed |
Date: |
Wed, 06 Sep 2023 21:45:54 +0200 |
Hi Josselin,
On Wed, 06 Sep 2023 at 11:45, Josselin Poiret <dev@jpoiret.xyz> wrote:
>> Well, on my machine, the bigger bottleneck seems the procedure name
>> ’proxy’ which copies stuff around, IIUC. See [1].
>
> Proxy is on the helper script side, it's just waiting for the actual
> build script to do its thing.
Do it copy on the fly? I mean, is it first written somewhere then moved?
>> Hum, is this ’graphml’ something you have not submitted? Or am I
>> missing a point? Last time I played with “guix graph”, I wrote a small
>> script for bridging with networkx. See [2].
>
> I've committed it pretty recently, and should work OOTB now.
Cool!
>>> You can compare with a compiled check-out of guix by just running the
>>> following in a `guix repl`:
>>> --8<---------------cut here---------------start------------->8---
>>> (use-modules (guix self) (guix monad-repl))
>>> ,run-in-store (guix-derivation (getcwd) "0.0-git" #:pull-version 1)
>>> --8<---------------cut here---------------end--------------->8---
>>> which takes at most 5 seconds on my laptop.
>>
>> Yeah, that’s fast. :-)
>>
>> For comparing, what would be the corresponding derivations that “guix
>> pull” is building?
>
> It's building the same! Just that building the derivation takes way
> longer because it has first to load a bunch of uncompiled guile files.
Well, I am not sure to follow. Is your point not about why it
takes longer?
If it is the same, these 5 seconds is not why “guix pull” is slow, no?
Cheers,
simon