* Alexandre Montplaisir (alexandre.montplai...@polymtl.ca) wrote: > Hi, > > You need to be root to use the kernel tracer, or alternatively, your > user needs to be in the "tracing" group.
One clarification: to use kernel tracing from the tracing group, one need to explicitely start "lttng-sessiond" from root first. This could, and should, be done by init scripts by the package. Thanks, Mathieu > But on a single-user machine it > might be a bit more simple to just use "sudo". > > The quickstart example uses the root user directly, which is why the > commands start with "#". > > On 12-03-01 10:08 PM, 岳鹏 wrote: > > lttngers: > > hello,I have met a problem when I first used the tool lttng. > > The situation as following: > > my system is ubuntu 11.10,and the kernel's version is 3.0.0-12,the lttng's > > version which I used is lttng2.0. > > I have installed this tool successfully,following the guide on > > https://launchpad.net/~lttng/+archive/ppa. > > But when I use lttng following > > https://bugs.lttng.org/projects/lttng-tools/wiki,I met a issue. > > the terminal is: > > *yuepeng@cheery-lucifer:~$ lttng create mysession > > Replace this with "sudo lttng create mysession" > > > Session mysession created. > > Traces will be written in > > /home/yuepeng/lttng-traces/mysession-20120302-105623 > > yuepeng@cheery-lucifer:~$ lttng enable-event -a -k > > and "sudo lttng enable-event -a -k" here > > Let us know if you still have problems. The Oneiric packages in the PPA > are still fresh, so testing is appreciated ;) > > > Cheers, > > -- > Alexandre Montplaisir > DORSAL lab, > École Polytechnique de Montréal > > > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev -- Mathieu Desnoyers Operating System Efficiency R&D Consultant EfficiOS Inc. http://www.efficios.com _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
