Re: how to measure IRQ service latency
hi : thanks for your help :) 2011/1/13 loody milo...@gmail.com: Hi 2011/1/13 neependra.kh...@gmail.com neependra.kh...@gmail.com: On Thu, Jan 13, 2011 at 10:23 AM, loody milo...@gmail.com wrote: hi: 2010/12/22 neependra.kh...@gmail.com neependra.kh...@gmail.com: On Wed, Dec 22, 2010 at 5:30 PM, Pradeep Kumar pradeepker...@gmail.com wrote: hi, can any one suggest a way to measure IRQ service latency? . I believe you can measure it with Ftrace. You might need to use irqsoff tracer. For reference:- http://people.redhat.com/srostedt/ I go into the website and see a lot of files with suffix odp. These are presentations which you can open with Open Office. Those contain the examples as well. is there any document which can tell us how to use it? http://lwn.net/Articles/365835/ http://lwn.net/Articles/366796/ http://lwn.net/Articles/370423/ You can look at my presentation which I gave at FOSS.in and see it is useful. http://neependra.net/?p=148 I have some questions about the document you mention: 1. I tried lttv recently and it seems different than the ftrace. Is there any document or setting can help me to tell them apart? 2. there is a column called TRACE in kernel menuconfig, is it used for ftrace or lttv? appreciate your help, miloody ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: how to measure IRQ service latency
hi: 2010/12/22 neependra.kh...@gmail.com neependra.kh...@gmail.com: On Wed, Dec 22, 2010 at 5:30 PM, Pradeep Kumar pradeepker...@gmail.com wrote: hi, can any one suggest a way to measure IRQ service latency? . I believe you can measure it with Ftrace. You might need to use irqsoff tracer. For reference:- http://people.redhat.com/srostedt/ I go into the website and see a lot of files with suffix odp. is there any document which can tell us how to use it? sincerely, miloody ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: how to measure IRQ service latency
On Thu, Jan 13, 2011 at 10:23 AM, loody milo...@gmail.com wrote: hi: 2010/12/22 neependra.kh...@gmail.com neependra.kh...@gmail.com: On Wed, Dec 22, 2010 at 5:30 PM, Pradeep Kumar pradeepker...@gmail.com wrote: hi, can any one suggest a way to measure IRQ service latency? . I believe you can measure it with Ftrace. You might need to use irqsoff tracer. For reference:- http://people.redhat.com/srostedt/ I go into the website and see a lot of files with suffix odp. These are presentations which you can open with Open Office. Those contain the examples as well. is there any document which can tell us how to use it? http://lwn.net/Articles/365835/ http://lwn.net/Articles/366796/ http://lwn.net/Articles/370423/ You can look at my presentation which I gave at FOSS.in and see it is useful. http://neependra.net/?p=148 -- Regards, Neependra www.neependra.net ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
