adamkaplan

# SSL request to hostname that is not in DNS

> curl -o /dev/null -w @curlformat https://beta.finance.yahoo.com
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  255k    0  255k    0     0   233k      0 --:--:--  0:00:01 --:--:--  233k

Size:     261255
DNS:      0.522
Connect:  0.536

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

jboner

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

stef

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#    This file is part of composite data analysis tools (cdat)

#    composite data analysis tools (cdat) is free software: you can
#    redistribute it and/or modify it under the terms of the GNU
#    Affero General Public License as published by the Free Software
#    Foundation, either version 3 of the License, or (at your option)
#    any later version.