From mboxrd@z Thu Jan 1 00:00:00 1970 From: pmekeze@yahoo.fr (patrick mekeze) Date: Mon, 21 Jun 2010 08:36:06 +0000 (GMT) Subject: [ltt-dev] Re : Run simultaneous lttng kerner tracer and userspace tracer In-Reply-To: <20100619161145.GF22882@Krystal> References: <938079.81502.qm@web28603.mail.ukl.yahoo.com> <20100619161145.GF22882@Krystal> Message-ID: <360864.22464.qm@web28609.mail.ukl.yahoo.com> thank mathieu for this clear answer. i have run my application as you have explained and it work very well. but what i?was searching about is?how to run and trace a userspace application without use usttrace. now i?have found?a answer of this question?in the userspace trace?manuel. the answer consist to mount the?ltt-userspace-event module in the?kernel. this will enable in the?/mnt/debugfs/ltt directory a virtual file name's write_event. writing in this file would generates a event in the kernel and the string that you have write would be the event parameter thank, Patrick?? ??? ? ________________________________ De : Mathieu Desnoyers ? : patrick mekeze Cc : ltt-dev at lists.casi.polymtl.ca Envoy? le : Sam 19 juin 2010, 18h 11min 45s Objet?: Re: [ltt-dev] Run simultaneous lttng kerner tracer and userspace tracer * patrick mekeze (pmekeze at yahoo.fr) wrote: > Hello every boby! > > I am a high school student and it is now about one month that i decided to interest on lttng projet because i was searching about some metric tools for unix systems. > The goal of my research is to develop a tool which would work as a "fligth recover " for a unix system running on a power PC hardward support. > > i decided to work for the first time on an?intel processor and after, i will make a croos compilation for my target which is a power PC processor > > I have already built a linux kernel with the lttng patch and i have install all the need tool to have a lttv analyser > > Because i would like to trace some programm running on userspace, i have install usttrace tool. > > After this i wrote a short application with a marker inside as i see in the usttrace tutorial available on website. > > When i run this with command $usttrace ./testprogramm , i have in the promt the name of directory where trace are logged and i can use lttv to analyze it. here i can see well my event "myevent" on the wiever. > > But? when i activated kernel trace with command $ lttctl -C -w /tmp/trace1 trace1, and run my userspace programm with command $ ./testprogramm,?i am not?able to get the myevent. > > so that, i want to know how tu run lttctl tools and userspace programm to get and analyze simultaneous on the lttv-gui? ,kernel event and userspace event. lttctl is only for kernel traces. If you want to combine both traces: lttctl -C -w /tmp/trace1 trace usttrace myprog lttctl -D trace lttv-gui -t /tmp/trace1 -t /path_to_ust_saved_trace That should work. And don't forget to edit the usttrace source code to select the kernel tracer compatible trace clock timestamp source, else your timestamps will be desynchronized. Mathieu > > thank you all for your help. > > Patrick > > >? ? ? > _______________________________________________ > ltt-dev mailing list > ltt-dev at lists.casi.polymtl.ca > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev -- Mathieu Desnoyers Operating System Efficiency R&D Consultant EfficiOS Inc. http://www.efficios.com -------------- next part -------------- An HTML attachment was scrubbed... URL: