Possible useful guix package performance data

Possible useful guix package performance data

[Evan Cooney]

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Hi everyone, I used guile's statprof profiler to collect some performance
data for guix package. I added the profiler by using the statprof module in
guix/guix/scripts/package.scm and wrapping the call to guix-package* in the
guix package define command thing in a lambda, then in statprof. Here is
the code: paste.debian.net/1334168
I collected this data by running guix package -i krita inkscape
rust-rustup-toolchain. It uses a significant amount of time in the garbage
collector (~75% of total runtime) and ~45% of time is spend calling append.
What do y'all make of this? Here is the full data: paste.debian.net/1334174

Happy hacking!
Evan Cooney

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Re: Possible useful guix package performance data

[Thompson, David]

Hi Evan,

On Fri, Nov 1, 2024 at 2:28 AM Evan Cooney <evancooney71@gmail.com> wrote:
>
> Hi everyone, I used guile's statprof profiler to collect some performance data for guix package. I added the profiler by using the statprof module in guix/guix/scripts/package.scm and wrapping the call to guix-package* in the guix package define command thing in a lambda, then in statprof. Here is the code: paste.debian.net/1334168
> I collected this data by running guix package -i krita inkscape rust-rustup-toolchain. It uses a significant amount of time in the garbage collector (~75% of total runtime) and ~45% of time is spend calling append. What do y'all make of this? Here is the full data: paste.debian.net/1334174

What are you trying to measure, exactly? The data collected is about a
single thread of a Guile process, but `guix package -i` involves
interaction with the Guix build daemon, waiting for downloads, etc.
These things are outside the scope of what statprof is tracing.
Anything that involves reaching out to the internet is going to make
for an unreliable benchmark. I'm not actively working on Guix tools
but I don't see anything immediately actionable from the collected
data. I think getting some more clarity around the goal is necessary
in order to know what to profile and how.

- Dave