On htop, it shows three load averages, one bold, one normal, one red. What do they signify?
The first one is a 1 minute load average, second is 5 minutes, third is 15 minutes, just like the uptime command. They do not have any special correlation in htop other than to stand out from each other.
This is a good read on understanding what load is: http://blog.scoutapp.com/articles/2009/07/31/understanding-load-averages