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

lasryaric

#!/bin/bash

# You can synchronize the configuration of multiple servers using git and this very small script.
# Just add your servers in a file called "serverlist.txt" (one per line) and
# configure git on the $REMOTE_DIRECTORY_CONFIG. Personnaly, I use the root of the server (/)
# You can also use git hook post-update to run a command after the update 
# of the config files if you wish.

SERVERS_FILE="serverlist.txt"
REMOTE_DIRECTORY_CONFIG="/"