Hi, I am running a job on few machines in my Linux cluster. Each machine is an Intel 8 core (with 32 threads). I see a total of 32 CPUs in /etc/cpuinfo and within mesos web interface. When I launch a job using mesos, I see that all CPUs are used equally and not just the number of CPUs I specify for that task.
Furthermore, I also see that the average per task running time within a single machine, with 5 tasks/machine is 1/2 as much as that with 10 tasks/machine. Within mesos, each task has 1 CPU assigned and it is completely CPU bound (no dataset, no file access). As per mesos, the 5 tasks job uses 5 CPUs while the 10 task job uses 10 CPUs (so average task run times should be same unlike what I am seeing). Also, when I monitor CPU utilization, I see that all CPUs are used equally. I am really confused. Is this how mesos/container isolation is supposed to work? Thanks, Asim
