Yesterday I had the honour to chat with Bosko Milekic, a FreeBSD developer, regarding his concern of the outrageous VSS and RSS (virtual memory size and resident size, respectively) of a ruby app. I remembered that I had some code showing that VSS and RSS do not accurately measure an app's memory usage.
Since this was Bosko Milekic I was talking with, he was able to use the code to further investigate the problem matter. The best part is, he wrote a write-up (Ruby on Rails and Application Memory Consumption Patterns) of what he has learnt including what his further investigation revealed. As a result, now I know more than yesterday.
Isn't collaboration simply wonderful?
Updated 2007-04-20: updated linked URI.
(originally from http://microjet.ath.cx/WebWiki/2006.01.12_RSS_and_VSZ_AreNotAccurateMeasureOfMemoryUse.html)
