Understanding CPU and memory usage in Bhyve

[Roman Bogorodskiy]

  Peter Grehan wrote:

> Hi Roman,
> 
> > But the summary is: is there a way to figure out how much CPU time
> > bhyve and the guest spends on host CPUs N (N = 0, 1, ...)?
> 
>   I don't think FreeBSD records that for a process, and bhyve doesn't 
> record the guest vCPU time on individual host CPUs (it's an aggregate 
> over all CPUs).
> 
>   Do you know if Linux supports that ?

As far as I understand, Linux supports that through Cgroups,
specifically, quoting:

http://docs.fedoraproject.org/en-US/Fedora/15/html/Resource_Management_Guide/sec-cpuacct.html

cpuacct.usage_percpu
reports the CPU time (in nanoseconds) consumed on each CPU by all tasks
in this cgroup (including tasks lower in the hierarchy). 

Roman Bogorodskiy
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