[Xenomai-core] Backfire: User - Kernel latancy mesurement tool on Xenomai

2011-04-06 Thread krishna m
I ported the backfire tool in the OSADL site [https://www.osadl.org/backfire-4.backfire.0.html] to measure the user to/from kernel latency.I wanted to measure the difference between the RT_PREEMPT kernel and Xenomai Kernel. Surprisingly i see RT_PREEMPT performance better than Xenomai.

Re: [Xenomai-core] Backfire: User - Kernel latancy mesurement tool on Xenomai

2011-04-06 Thread Wolfgang Denk
Dear krishna m, In message col122-w4082c3bc356937e8c1ddadbd...@phx.gbl you wrote: * is there any similar tool like backfire in the Xenomai tool set that dose the similar measurements? We use (and recommend) the gpioirqbench benchmark. See the application note for it here:

Re: [Xenomai-core] Backfire: User - Kernel latancy mesurement tool on Xenomai

2011-04-06 Thread krishna murthy j s
Thanks for the reply. Can you please tell me why my questions are useless. Such attitude will take Xenomai user group no where. On Wed, Apr 6, 2011 at 6:56 PM, Gilles Chanteperdrix gilles.chanteperd...@xenomai.org wrote: krishna m wrote: I ported the backfire tool in the OSADL site [

Re: [Xenomai-core] Backfire: User - Kernel latancy mesurement tool on Xenomai

2011-04-06 Thread Gilles Chanteperdrix
krishna murthy j s wrote: Thanks for the reply. Can you please tell me why my questions are useless. Such attitude will take Xenomai user group no where. You obviously have not read any Xenomai documentation or FAQ. So you should wait do have done so before writing any code, drawing any

Re: [Xenomai-core] Backfire: User - Kernel latancy mesurement tool on Xenomai

2011-04-06 Thread Philippe Gerum
On Wed, 2011-04-06 at 19:31 +0100, krishna murthy j s wrote: Thanks for the reply. Can you please tell me why my questions are useless. Such attitude will take Xenomai user group no where. It is often better to go nowhere than to go to the wrong place. Anyway, some reasons for the flak you

Re: [Xenomai-core] Backfire: User - Kernel latancy mesurement tool on Xenomai

2011-04-06 Thread Gilles Chanteperdrix
Philippe Gerum wrote: On Wed, 2011-04-06 at 19:31 +0100, krishna murthy j s wrote: Thanks for the reply. Can you please tell me why my questions are useless. Such attitude will take Xenomai user group no where. So, don't take what was said earlier personally. It is just that sometimes,