iladriano

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

iladriano

// mkdir indextank
// wget https://github.com/SPORE/api-description/blob/master/services/indextank.json
// install node and npm
// npm install spore underscore futures
// edit baseUrl, password and index var
// node indextank.js

var baseUrl = 'http://xxx.api.indextank.com';
var password = 'xxx';
var index = 'test_spore';