hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

andyshinn

FROM gliderlabs/alpine:3.3
COPY myawesomescript /bin/myawesomescript
COPY root /var/spool/cron/crontabs/root
RUN chmod +x /bin/myawesomescript
CMD crond -l 2 -f

WebReflection

Update

If you're OK in having a node-esm executable, please consider this solution.

#!/usr/bin/env sh
# the /usr/local/bin/node-esm executable
input_file=$1
shift
exec node --input-type=module - $@ <$input_file

tomhicks

/*
Copy this into the console of any web page that is interactive and doesn't
do hard reloads. You will hear your DOM changes as different pitches of
audio.

I have found this interesting for debugging, but also fun to hear web pages
render like UIs do in movies.
*/

const audioCtx = new (window.AudioContext || window.webkitAudioContext)()

augiedoggie

#!/bin/bash

### the unique window title prefix for our terminal session
terminalKeyword="QuakeTerm"

### optionally set the location of a custom terminal profile to be used
### it must contain whatever is used as the terminalKeyword at the beginning of the "Window title"
### for example:    "Window title" , "QuakeTerm %i: %t"
### comment out the line to use the default Terminal settings
#terminalProfile="/boot/home/config/non-packaged/apps/MyCustomTerminalSettings"