I'm a big fan of 'sar' as well. It's nice that it can also show you i/o wait for the sampled period. I also love vmstat, as you can use it to see everything t

I'm a big fan of 'sar' as well. It's nice that it can also show you i/o wait for the sampled period. I also love vmstat, as you can use it to see everything that is happening with the system sampled every second if you like. The first two columns will show you the number of processes in the run queue as well as number of processes blocked on i/o.