On 8/20/11, esmaeil mirzaee <esmaeil.debian@xxxxxxxxx> wrote: > Hi > > On Sat, Aug 20, 2011 at 12:10 PM, Prateek Sharma <prateek3.14@xxxxxxxxx> > wrote: >> >> >> On Sat, Aug 20, 2011 at 3:20 PM, Prateek Sharma <prateek3.14@xxxxxxxxx> >> wrote: >>> >>> Hello all, >>> I am learning how to add static trace points via trace_events. >>> I am seeing the trace using 'cat /sys/kernel/debug/tracing/trace' . > I am new and I try to learn trace. Can you give me how can use trace? >>> Naturally the tracing buffer size is limited. My question is, what is the >>> recommended way of reading trace data? >>> Ive looked at perf record/report, but so far, i have only managed to get >>> aggregated statistics, or complete dumps. >>> What i need is just a way to collect all the trace output to one file. >>> Basically i am using the trace events as a souped up printk (since i >>> need >>> to collect large amounts of traces). >>> Do i need to use LTTng/viewer or something for this task? >>> Thanks! >> >> I've already found the solution to this, turns out there is trace_pipe as >> well. >> Sorry! >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies@xxxxxxxxxxxxxxxxx >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> >> > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > Hi Esmaeil! Some good starting points for you: [1] Documentation/ftrace.txt [2] http://lwn.net/Articles/322666/ [3] http://lwn.net/Articles/365835/ [4] http://lwn.net/Articles/366796/ [5] http://lwn.net/Articles/370423/ _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
