Re: thread context switching
Try ftrace for the scheduler On March 18, 2014 6:01:50 PM EET, Nada Saif nada.sa...@gmail.com wrote: Hi, I want to measure thread context switching in c, How I can do that? Thanks, N.A.S ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -- nayobix___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: thread context switching
Hello, maybe KernalShark can help: https://lwn.net/Articles/425583/ Regards, On Wed, Mar 19, 2014 at 10:10 AM, nayobix nayo...@nayobix.org wrote: Try ftrace for the scheduler On March 18, 2014 6:01:50 PM EET, Nada Saif nada.sa...@gmail.com wrote: Hi, I want to measure thread context switching in c, How I can do that? Thanks, N.A.S Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -- nayobix ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: thread context switching
Thanks guys . I thought there is an easy way for that...I'm trying to do it with multi-threads synchronization.. Bests, On Wed, Mar 19, 2014 at 1:54 PM, Oussama Jabbari oussama.jabb...@gmail.comwrote: Hello, maybe KernalShark can help: https://lwn.net/Articles/425583/ Regards, On Wed, Mar 19, 2014 at 10:10 AM, nayobix nayo...@nayobix.org wrote: Try ftrace for the scheduler On March 18, 2014 6:01:50 PM EET, Nada Saif nada.sa...@gmail.com wrote: Hi, I want to measure thread context switching in c, How I can do that? Thanks, N.A.S Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -- nayobix ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: thread context switching
Did you try the solution mentioned by Saqlain ? http://lists.kernelnewbies.org/pipermail/kernelnewbies/2014-March/010050.html On Tue, Mar 18, 2014 at 9:31 PM, Nada Saif nada.sa...@gmail.com wrote: Hi, I want to measure thread context switching in c, How I can do that? Thanks, N.A.S ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -- easy is right begin right and you're easy continue easy and you're right the right way to go easy is to forget the right way and forget that the going is easy ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: thread context switching
On Tue, Mar 18, 2014 at 07:01:50PM +0300, Nada Saif wrote: Hi, I want to measure thread context switching in c Why? , How I can do that?\ Have you looked at the perf command? ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: thread context switching
On Tue, 18 Mar 2014 19:01:50 +0300, Nada Saif said: I want to measure thread context switching in c, How I can do that? What are you trying to measure, exactly, and why? The answer depends on the details of the question. However, my first go-to solution would see if 'perf' can cough up the numbers you need. It's able to slurp out all sorts of timing data from the kernel (though some data and trace points require CONFIG_* variables to be set in the kernel build). pgpz0guNYeRuJ.pgp Description: PGP signature ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: thread context switching
On Tue, Mar 18, 2014 at 10:24 PM, valdis.kletni...@vt.edu wrote: On Tue, 18 Mar 2014 19:01:50 +0300, Nada Saif said: I want to measure thread context switching in c, How I can do that? Looks suspiciously like an interview-type question? :) What are you trying to measure, exactly, and why? The answer depends on the details of the question. However, my first go-to solution would see if 'perf' can cough up the numbers you need. It's able to slurp out all sorts of timing data from the kernel (though some data and trace points require CONFIG_* variables to be set in the kernel build). ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
