Hi Anand, I did what you said but i am getting a strange output [root@machine0 Desktop]#ls cli trace.dat.cpu11 trace.dat.cpu2 trace.dat.cpu7 client.c trace.dat.cpu12 trace.dat.cpu3 trace.dat.cpu8 trace.dat.cpu0 trace.dat.cpu13 trace.dat.cpu4 trace.dat.cpu9 trace.dat.cpu1 trace.dat.cpu14 trace.dat.cpu5 trace.dat.cpu10 trace.dat.cpu15 trace.dat.cpu6 [root@hwcentos10 Desktop]# cat trace.dat.cpu cat: trace.dat.cpu: No such file or directory [root@machine0 Desktop]# cat trace.dat.cpu0 [root@machine0 Desktop]# tcpc client.c trace.dat.cpu1 -bash: tcpc: command not found
why am i getting so much trace.dat.cpu files and tcpc command not found can you please help me out.... cli is the executable file for client ---Anil On Wed, Jul 16, 2014 at 12:27 AM, Anand Moon <[email protected]> wrote: > Hi Anil, > > You need to use "trace-cmd record" command and run you client. For example. > > I chose to write a tcp simple client server application. > Server running on remote machine listening on some port > I executed below command to connect to the server using trace-cmd record > Below command records all the event and function trace in the kernel, > > You can filter these function by passing "-e net:*" > this command will generate a report of all the function that kernel > executed. > You can read the report afterwords. using trace-cmd report. > > #sudo trace-cmd record -e all ./tcpc 10.0.0.28 > #ls > #tcpc tcpc.c trace.dat > #trace-cmd report > > You can also user perf command to trace the kernel functions. > > #sudo perf record -e probe:tcp_sendmsg > > #perf report > > perf examples can be found below. > > http://www.brendangregg.com/perf.html > > -Anand Moon > > > > > > On Tuesday, July 15, 2014 10:34 PM, Jeff Haran <[email protected]> > wrote: > > > > This helps me to see the forest for the trees. And it’s pretty current: > > > http://upload.wikimedia.org/wikipedia/commons/3/37/Netfilter-packet-flow.svg > > Jeff Haran > > > From:[email protected] [mailto: > [email protected]] On Behalf Of Anil Joshi > Sent: Tuesday, July 15, 2014 7:38 AM > To: kernelnewbies > Subject: Path of network packet in kernel > > Hi All, > > I am just new to all this,just wanted to trace the path of the packet > since it enter the system(inside the kernel (functions and system calls)) > and reaches the destination application. > > How to do that. > > > Regards > > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
_______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
