feat(tvix/glue): add nixpkgs eval benchmark r/7161

This adds a criterion.rs-based testbench into tvix-glue.

It can be invoked by running `cargo bench` from inside the `tvix-glue`
crate.
`target/criterion/report/index.html` contains nice graphs.
It's able to diff against the previous run, so you can invoke `cargo
bench` before and after a certain change to reason about the impact in
evaluation performance.

Currently, we need to create a bunch of Evaluator resources inside the
benchmark loop itself, which is a bit annoying, as it leaks into the
things we benchmark.

This should become better with b/262.

Fixes b/322.

Change-Id: I91656a308887baa1d459ed54d58baae919a4aaf2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10245
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>

1 files changed, 1 insertions, 0 deletions

diff --git a/tvix/Cargo.lock b/tvix/Cargo.lock
index ce6f10bb7695..1df6d199a541 100644
--- a/tvix/Cargo.lock
+++ b/tvix/Cargo.lock
@@ -3161,6 +3161,7 @@ name = "tvix-glue"
 version = "0.1.0"
 dependencies = [
  "bytes",
+ "criterion",
  "lazy_static",
  "nix-compat",
  "test-case",