Object instantiation time benchmark in Python : ARM vs. x86

Suppose we have two machines.

• Intel x86 : Core Duo 1.86GHz CPU — python 2.7.4 on Ubuntu 13.04
• RaspberryPi — ARM 700Mhz CPU -python 2.7.3 on raspbianOS

Ubuntu 12.04’s ghostscript v. 9 is 10–20 times slower than v. 8

Recently I’ve migrated huge rails app to Amazon Opsworks which support Amazon Linux and Ubuntu. My customers started to whine about the time that it takes to process their pdfs. I did some research and it came out that…

My latest Warsaw Ruby Users Group about AWS Opsworks

[slideshare id=29146245&sc=no]

OSX terminal spell to notify you when internet connection is back

Here's a simple loop that will notify you as soon as your internet connection is back. It will basically try to ping Google's first DNS server until it suceeds.

[code language="shell"]
until…

Custom symlinks in Amazon Opsworks RoR application

If you want your custom yaml files inside config/ directory of your rails application deployed via Amazon Opsworks, its nice to do it the Chef-way. Provided that your application name is “MyApp Staging”, and you already have “database” and…

Chef-solo + rbenv + ree-1.8.7 + tcmalloc error headache

Have you ever hit the “tcmalloc” problem while installing rbenv’s ree-1.8.7?

Did you try to solve the problem by adding