Author: Chris Lattner
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// v2 of the great example of SSE in go by @ismasan. | |
// includes fixes: | |
// * infinite loop ending in panic | |
// * closing a client twice | |
// * potentially blocked listen() from closing a connection during multiplex step. | |
package main | |
import ( | |
"fmt" | |
"log" |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/bin/bash | |
if [[ -z $(grep dockerhost /etc/hosts) ]] | |
then | |
echo `/sbin/ip route|awk '/default/ { print $3 }'` dockerhost >> /etc/hosts | |
fi |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/usr/bin/env ruby | |
# Usage | |
# $ docker-machine create my-machine123 -d virtualbox | |
# $ ruby <(curl -L https://git.io/vvvco) my-machine123 | |
# https://gist.github.com/mattes/4d7f435d759ca2581347 | |
require 'erb' | |
bootlocalsh = %Q(#/bin/bash |
- To improve the speed of Boot2Docker drastically, you will want to set it up to use NFS.
- You will need to do the following once on your host machine:
-
Add this to /etc/exports on your mac
# BOOT2-DOCKER-BEGIN /Users 192.168.59.103 -alldirs -mapall=501:20 # BOOT2-DOCKER-END
-
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/bin/bash | |
# | |
# This script will mount /Users in the boot2docker VM using NFS (instead of the | |
# default vboxsf). It's probably not a good idea to run it while there are | |
# Docker containers running in boot2docker. | |
# | |
# Usage: sudo ./boot2docker-use-nfs.sh | |
# |
A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."
- Does the design expect failures to happen regularly and handle them gracefully?
- Have we kept things as simple as possible?
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/usr/bin/python -tt | |
# | |
import datetime | |
import json | |
import logging | |
import logging.handlers | |
import optparse | |
import os | |
import re | |
import shutil |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
NewerOlder