Re: About tracing clues

On Wed, 24 Aug 2022 00:54:48 +0530
Prasad Pandit <[email protected]> wrote:

> Hello Steve,
> 
> On Sat, 20 Aug 2022 at 14:51, Prasad Pandit <[email protected]> wrote:
> >>   # trace-cmd agent  
> 
> * For me `trace-cmd agent` in the guest shows =>  listening on @4294967295:823

I need to fix that to be more meaningful. That 4294967295 is (unsigned)-1.

In other words, the creation of the vsocket failed

It means that you do not have vsockets defined for this guest, or you are
running inside a container on the guest that prevents you from accessing
the vsockets.

> 
> >>   # trace-cmd record --poll -M 1E -e all --proxy 2 --name host -e kvm -e sched -e irq /home/test/rt-tests/oslat --cpu-list 1-4 --rtprio 1 --duration 12h -T 30  
> 
> * Running above command with --proxy 4294967295:823 throws an error =>
> guest 4294967295 not found

The rest will not work because the vsocket failed.

-- Steve