When I was at Google the machines where typically oversubscribed and the workload varied quite a bit. Google has done a lot of work to allow you to ignore the o

When I was at Google the machines where typically oversubscribed and the workload varied quite a bit. Google has done a lot of work to allow you to ignore the other processes on the machine and just specify the resources your process required. Then Borg which they recently published a paper about would take care of scheduling it on an appropriate machine. As a consequence, answering the question of what other processes where on the same machine was not as easy as on an EC2 instance. We didn't mind though because Borg was so good at scheduling we pretty much didn't have to care about the machine level. Instead we thought at the datacenter level.