illustris

curl -fsSL https://install.determinate.systems/nix | sh -s -- install
bash -l
nix develop github:illustris/perfws

https://github.com/illustris/perfws

illustris

#!/usr/bin/env bpftrace
/*
 * biosnoop.bt   Block I/O tracing tool, showing per I/O latency.
 *               For Linux, uses bpftrace, eBPF.
 *
 * TODO: switch to block tracepoints. Add offset and size columns.
 *
 * This is a bpftrace version of the bcc tool of the same name.
 *
 * 15-Nov-2017  Brendan Gregg   Created this.

illustris

import sys
import functools

callstack = []

@functools.cache
def lookup(func):
    try:
        parts = func.split(":")
        with open(parts[0]) as f:

illustris

Example metrics:

# HELP node_hwmon_sensor_label Label for given chip and sensor
# TYPE node_hwmon_sensor_label gauge
node_hwmon_sensor_label{chip="pci0000:00_0000:00:18_3",label="tccd1",sensor="temp3"} 1
node_hwmon_sensor_label{chip="pci0000:00_0000:00:18_3",label="tccd2",sensor="temp4"} 1
node_hwmon_sensor_label{chip="pci0000:00_0000:00:18_3",label="tccd3",sensor="temp5"} 1
node_hwmon_sensor_label{chip="pci0000:00_0000:00:18_3",label="tccd4",sensor="temp6"} 1
node_hwmon_sensor_label{chip="pci0000:00_0000:00:18_3",label="tccd5",sensor="temp7"} 1
node_hwmon_sensor_label{chip="pci0000:00_0000:00:18_3",label="tccd6",sensor="temp8"} 1

illustris

[illustris@illustris-thinkpad:~/src/nixpkgs]$ git status
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean

[illustris@illustris-thinkpad:~/src/nixpkgs]$ git remote -v
origin  git@github.com:illustris/nixpkgs.git (fetch)
origin  git@github.com:illustris/nixpkgs.git (push)

illustris

Nix

Get .drv for /etc/nixos/configuration.nix

nix-instantiate '<nixos>' -A system

Pretty print derivation

illustris

from collections import Counter
c = Counter()
for line in sys.stdin:
	c.update(re.findall('.[^A-Z]*', line.split()[2].split('_')[2]))

print(c)

illustris

#define N 4

int *sort(int *arr, int len)
{
	for(int i=0;i<len;i++)
	{
		for(int j=i+1;j<len;j++)
		{
			if(arr[i]>arr[j])
			{

illustris

#!/bin/sh
cachedir=${XDG_CACHE_HOME:-"$HOME/.cache"}
histsize=50
if [ -d "$cachedir" ]; then
    cache=$cachedir/emenu
    hist=$cachedir/emenu_hist
else
    cache=$HOME/.emenu_cache # if no xdg dir, fall back to dotfile in ~
    hist=$HOME/.emenu_cache_hist # if no xdg dir, fall back to dotfile in ~
fi

illustris

#!/bin/bash

print_usage() {
	echo "$0 - Get memory utilization of corosync"
	echo ""
	echo "$0 [options]"
	echo "Options:"
	echo "-h, --help    show help"
	echo "-b, --byte    print rss in bytes (could get printed in scientific notation)"
	echo "-k, --kbyte    print rss in bytes (could get printed in scientific notation)"