During last SmartDevCon 2013 that took place between 12 and 14 September in Katowice (Poland), I presented some materials about ripple monetary system in the context of origin of money, capitalism and how…

Wojciech Ziniewicz in Stories imported from wordpress

Aug 19, 2013

ZMap — Scan whole internet in 44 minutes

A team of researchers at the University of Michigan created a tool to scan whole internet in 44minutes. They’ve created a map of how thunderstorms affect the network or what is the growth of…

Wojciech Ziniewicz in Stories imported from wordpress

Jul 17, 2013

ext3 versus ext4 — simple benchmark and some issues

Tests were performed on 50GB EBS with provisioned 300 IOPS that has following results in hdparm test:

[code language=”shell”]
root@ip-10–251–3–125:/home# hdparm -tT /dev/xvdc1
/dev/xvdc1:
Timing cached reads: 6312…

Wojciech Ziniewicz in Stories imported from wordpress

May 28, 2013

Beware of unprovisioned VMs

Few months ago I started renting a small VM from Hetzner Company. I rent many physical servers in their datacenters because prices are very very good, but this time I wanted to have small monitoring server that will run 3 services:

zabbix server