jadbox

Verifying that "jadbox.id" is my Blockstack ID. https://onename.com/jadbox

jadbox

Verifying my Blockstack ID is secured with the address 1M5RYPahPUgsWG4ZP7d54zxPcD6QQ95Cxd https://explorer.blockstack.org/address/1M5RYPahPUgsWG4ZP7d54zxPcD6QQ95Cxd

jadbox

### Keybase proof

I hereby claim:

  * I am jadbox on github.
  * I am jadbox (https://keybase.io/jadbox) on keybase.
  * I have a public key whose fingerprint is 6AB5 5704 974A 7E2C DE68  9072 117E 7CFD 299C 41F3

To claim this, I am signing this object:

jadbox

Just do something, doesn't matters what 
Book == blog archives. Feel free to scram
We are creatures of habits (but don't condition habits with identity/ego). Have deliberate habits 
Stopping alcohol 
Unpack causes 
- availability
- desire 

Availability => Early morning sport. Force to not go out at night too much. 
Desire 

jadbox

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

jadbox

OS and i3

• Debian Jessie (8.0) Minimal Installation
• Guided partitioning
• Only enable system utilities, disable Debian Desktop Environment and Print Server

Login as root

apt-get install sudo
adduser <youruser> sudo

jadbox

Node6:
#[Mean    =    18267.195, StdDeviation   =     5206.857]
#[Max     =    27852.800, Total count    =       147705]
#[Buckets =           27, SubBuckets     =         2048]
----------------------------------------------------------
  222902 requests in 30.01s, 90.77MB read
  Socket errors: connect 0, read 0, write 0, timeout 244
Requests/sec:   7427.31
Transfer/sec:      3.02MB

jadbox

Node6:
#[Mean    =    18267.195, StdDeviation   =     5206.857]
#[Max     =    27852.800, Total count    =       147705]
#[Buckets =           27, SubBuckets     =         2048]
----------------------------------------------------------
  222902 requests in 30.01s, 90.77MB read
  Socket errors: connect 0, read 0, write 0, timeout 244
Requests/sec:   7427.31
Transfer/sec:      3.02MB

jadbox

#------------------------------------------------------------------------------
# AUTOVACUUM PARAMETERS
#------------------------------------------------------------------------------

#autovacuum = on			# Enable autovacuum subprocess?  'on'
					# requires track_counts to also be on.
log_autovacuum_min_duration = 0	# -1 disables, 0 logs all actions and
					# their durations, > 0 logs only
					# actions running at least this number
					# of milliseconds.

jadbox

import {Stream} from 'most'

const fromNodeCallBack = fn => (...args) => new Stream(new CallBackSource(fn, args))

class CallBackSource {
  constructor (fn, args) {
    this.fn = fn
    this.args = args
  }