Mic92

Tvix is a new implementation of the Nix language and package manager. In this benchmark we test it's performance when instantiating the hello package from nix. Note that at the time tvix does not have its own store implementation yet and it has to execute nix-store whenever it needs to copy files to the store.

Mic92

{ pkgs, config, ... }:
{
  nixpkgs.config.allowUnfree = true;
  nixpkgs.config.nvidia.acceptLicense = true;
  # enable the nvidia driver
  services.xserver.videoDrivers = [ "nvidia" ];
  hardware.opengl.enable = true;
  hardware.nvidia.datacenter.enable = true;
  hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.dc_535;

Mic92

hyperfine --show-output 'rm -R ~/.cache/nix/binary-cache-*.sqlite*; rm -rf /tmp/cache; nix copy --from "{url}" --to "file:///tmp/cache?compression=none" /nix/store/jlkypcf54nrh4n6r0l62ryx93z752hb2-firefox-132.0' -L url https://nixos.tvix.store,https://cache.nixos.org/
Benchmark 1: rm -R ~/.cache/nix/binary-cache-*.sqlite*; rm -rf /tmp/cache; nix copy --from "https://nixos.tvix.store" --to "file:///tmp/cache?compression=none" /nix/store/jlkypcf54nrh4n6r0l62ryx93z752hb2-firefox-132.0
  Time (mean ± σ):      5.090 s ±  0.113 s    [User: 4.721 s, System: 2.555 s]
  Range (min … max):    4.942 s …  5.332 s    10 runs

Benchmark 2: rm -R ~/.cache/nix/binary-cache-*.sqlite*; rm -rf /tmp/cache; nix copy --from "https://cache.nixos.org/" --to "file:///tmp/cache?compression=none" /nix/store/jlkypcf54nrh4n6r0l62ryx93z752hb2-firefox-132.0
  Time (mean ± σ):      6.729 s ±  0.148 s    [User: 15.829 s, System: 2.904 s]
  Range (min … max):    6.560 s …  7.049 s    10 runs

Mic92

diff --git a/nixos/modules/system/etc/build-composefs-dump.py b/nixos/modules/system/etc/build-composefs-dump.py
index fe739a621ec4..42287ea35842 100644
--- a/nixos/modules/system/etc/build-composefs-dump.py
+++ b/nixos/modules/system/etc/build-composefs-dump.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 """Build a composefs dump from a Json config
 
 See the man page of composefs-dump for details about the format:

Mic92

// This code was autogenerated with `dbus-codegen-rust `, see https://github.com/diwic/dbus-rs
use dbus as dbus;
#[allow(unused_imports)]
use dbus::arg;
use dbus::blocking;

pub trait OrgFreedesktopDBusPeer {
    fn ping(&self) -> Result<(), dbus::Error>;
    fn get_machine_id(&self) -> Result<String, dbus::Error>;
}

Mic92

{ config, lib, pkgs, modulesPath, ... }:

{ imports =
    [ ./hardware-configuration.nix
      <nixpkgs/nixos/modules/testing/test-instrumentation.nix>
    ];

  networking.hostName = "thatworked";

  documentation.enable = false;

Mic92

package main

import (
	"encoding/json"
	"fmt"
	"go/ast"
	"go/parser"
	"go/token"
	"log"
	"os"

Mic92

#!/usr/bin/env nix-shell
#!nix-shell -i bash -p bash -p qemu_kvm -p iproute2

set -x -eu -o pipefail

VM_IMAGE=""
CPUS="${CPUS:-$(nproc)}"
MEMORY="${MEMORY:-4096}"
SSH_PORT="${SSH_PORT:-2222}"
IMAGE_SIZE="${IMAGE_SIZE:-10G}"

Mic92

#!/usr/bin/env bash
set -xeuo pipefail

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

# shellcheck disable=SC1090
source "$SCRIPT_DIR/env.sh"
: "${host:?}"
: "${ssh_user:=root}"

Mic92

9 1 0x01 147 39984 2088515013 55466767689355
name                            type data
hits                            4    227098528
iohits                          4    162963
misses                          4    1148629
demand_data_hits                4    48027529
demand_data_iohits              4    659
demand_data_misses              4    267582
demand_metadata_hits            4    178122149
demand_metadata_iohits          4    4992