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@mezis
mezis / query_finder.sql
Last active May 26, 2024 20:03
Finding long-running queries in MySQL
SELECT id,state,command,time,left(replace(info,'\n','<lf>'),120)
FROM information_schema.processlist
WHERE command <> 'Sleep'
AND info NOT LIKE '%PROCESSLIST%'
ORDER BY time DESC LIMIT 50;
@csfrancis
csfrancis / gdb_ruby_backtrace.py
Last active June 25, 2024 19:12
Dump an MRI call stack from gdb
# Updated for Ruby 2.3
string_t = None
def get_rstring(addr):
s = addr.cast(string_t.pointer())
if s['basic']['flags'] & (1 << 13):
return s['as']['heap']['ptr'].string()
else:
return s['as']['ary'].string()
@andrewxhill
andrewxhill / rivers.md
Last active April 28, 2017 17:29
Steps used to make map of California rivers
@acj
acj / TrimVideo.swift
Last active November 2, 2023 15:05
Trim video using AVFoundation in Swift
//
// TrimVideo.swift
// VideoLab
//
// Created by Adam Jensen on 3/28/15.
// Updated for Swift 5 (tested with Xcode 10.3) on 7/30/19.
// MIT license
//
import AVFoundation
@acj
acj / ATTENTION.md
Last active May 5, 2023 12:23
Build a movie from jpeg images in Swift using AVFoundation

This code has moved

Please refer to the TimeLapseBuilder-Swift repository on GitHub from now on.

I will leave the original code here as a reference, but new comments may be removed. Please open an issue on GitHub if you have questions or would like to contribute.

Thanks!

@dtjm
dtjm / join_test.go
Last active May 20, 2025 06:16
Benchmarking various ways of concatenating strings in Go
package join
import (
"fmt"
"strings"
"testing"
)
var (
testData = []string{"a", "b", "c", "d", "e"}
@djo
djo / run.sh
Last active January 27, 2020 04:35
Handling of UNIX-signals in Erlang/Elixir is not supported, this script provides start-stop management with handling TERM signal for Docker installation.
#!/usr/bin/env bash
set -x
term_handler() {
echo "Stopping the server process with PID $PID"
erl -noshell -name "[email protected]" -eval "rpc:call('[email protected]', init, stop, [])" -s init stop
echo "Stopped"
}
trap 'term_handler' TERM INT
@josevalim
josevalim / watcher.sh
Last active May 22, 2024 10:06
A 1LOC bash script for re-running tests whenever a lib/ or test/ file changes keeping the same VM instance
# You will need fswatch installed (available in homebrew and friends)
# The command below will run tests and wait until fswatch writes something.
# The --stale flag will only run stale entries, it requires Elixir v1.3.
fswatch lib/ test/ | mix test --stale --listen-on-stdin
@sandeepraju
sandeepraju / ttfb.sh
Created July 20, 2016 21:17
curl command to check the time to first byte
#!/bin/bash
# file: ttfb.sh
# curl command to check the time to first byte
# ** usage **
# 1. ./ttfb.sh "https://google.com"
# 2. seq 10 | xargs -Iz ./ttfb.sh "https://google.com"
curl -o /dev/null \
-H 'Cache-Control: no-cache' \
-s \
@JoeUX
JoeUX / compile-nginx.sh
Last active June 29, 2024 12:58 — forked from tollmanz/compile-nginx.sh
Optimized nginx compilation flags for modern CPUs, faster math, and LTO. This should be much faster than vanilla nginx builds. Still testing.
# Install dependencies
#
# * checkinstall: package the .deb
# * libpcre3, libpcre3-dev: required for HTTP rewrite module
# * zlib1g zlib1g-dbg zlib1g-dev: required for HTTP gzip module
apt-get install checkinstall libpcre3 libpcre3-dev zlib1g zlib1g-dbg zlib1g-dev && \
mkdir -p ~/sources/ && \
# Compile against OpenSSL to enable NPN. I updated this block to get the latest 1.0.2h release. It's critical that OpenSSL be up to date.