Navigation Brand and toggle get grouped for better mobile display Toggle navigation PostgreSQL Addict Collect the nav links, forms, and other content for toggling About me GitHub Google+ Twitter Flickr RSS /.navbar-collapse /.container Page Content main content This is the post I promised last week, explaining a few common issues with memory contexts. The issues mostly lead to excessive overhead, i.e. excessive usage of resources - usually memory. And that's exactly what this post is about, so whenever I say "overhead" you can read "excessive memory usage." I will also try to give advices on how to avoid those issues or minimize the impact. As I briefly mentioned when explaining allocation set internals , there are three main sources of overhead: chunk headers - for large chunks, this gets negligible unused space (because of 2^N chunks) - ex...