What is a good cache hit ratio? Taking MySQL as an example: what is a good query cache hit ratio? At the time of writing this, I get over 600 results if I enter that question into Google and limit the results to stackexchange.com. If I change 'ratio' to 'rate,'...

This article is a cross post from Pythian's blog I was recently discussing benchmarking options for Cassandra with some colleagues and given my background with MySQL, sysbench was the first tool I thought of. Sysbench is a high performance and flexible benchmark tool that can be used to run both...

This article is a cross post from Pythian's blog Having good historial metrics monitoring in place is critical for properly operating, maintaining and troubleshooting database systems, and Percona Monitoring and Management is one of the options we recommend to our clients for this. One common concern among potential users is...

I recently stumbled upon the hyper and super keys on emacs here. What I like about this setup is that I rarely use the Function key in my day to day usage, so this is making good use of a key that's both mostly unused and conveniently located in my...

I recently broke my emacs (aquamacs) setup. Fixing it was a very good learning experience that showed me how little I knew about how it actually worked! As part of that process, I transitioned from aquamacs (a great project to which I made a small donation at some point) to...