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From: Steven Rostedt <rostedt@goodmis.org>
To: Prasad Pandit <ppandit@redhat.com>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>,
	linux-trace-users@vger.kernel.org
Subject: Re: About tracing clues
Date: Tue, 23 Aug 2022 15:30:20 -0400	[thread overview]
Message-ID: <20220823153020.21a7d16a@gandalf.local.home> (raw)
In-Reply-To: <CAE8KmOwuKSaOT-mPeJsV-2uUrF=KNyyfY5tNoPnh_AHnzOYfNA@mail.gmail.com>

On Wed, 24 Aug 2022 00:54:48 +0530
Prasad Pandit <ppandit@redhat.com> wrote:

> Hello Steve,
> 
> On Sat, 20 Aug 2022 at 14:51, Prasad Pandit <ppandit@redhat.com> 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

      reply	other threads:[~2022-08-23 20:10 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-19 10:06 About tracing clues Prasad Pandit
2022-08-19 17:50 ` Steven Rostedt
2022-08-20  9:21   ` Prasad Pandit
2022-08-23 19:24     ` Prasad Pandit
2022-08-23 19:30       ` Steven Rostedt [this message]

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