Messages in this thread | | | Date | Wed, 26 Sep 2007 16:47:44 +0530 | Subject | Re: realtime preemption performance difference | From | (Ankita Garg) |
| |
Hi Jaswinder,
On Wed, Sep 26, 2007 at 12:41:57PM +0530, Jaswinder Singh wrote: > hello hufey, > > I am not using montavista kernel, I am using standard linux kernel. > > Realtime is known by worst case latencies. Ingo and team are claiming > for realtime support so their should be some samples and performance > numbers, >
You can obtain several -rt testcases from the RT wiki: http://rt.wiki.kernel.org/index.php/Main_Page Here we have testcases/benchmarks for measuring scheduling latencies, priority preemption, signaling latencies, etc and other important information on the patchset.
Hope this helps!
> Can someone please share their samples and/or numbers. > > Thank you, > > Jaswinder Singh. > > On 9/25/07, hufey <hufeyy@gmail.com> wrote: > > On 9/24/07, Jaswinder Singh <jaswinderlinux@gmail.com> wrote: > > > Hi all, > > > > > > I want to check performance difference by using realtime preemption patch : > > > > > > http://www.kernel.org/pub/linux/kernel/projects/rt/ > > > > > > Please let me know from where I can download samples to test realtime > > > preemption performance difference. > > > > > > > As far as I know, some embedded linux vendors such as MontaVista > > provide kernel patch to export some interfaces to measure realtime > > performance. > > > > > Can someone please share performance numbers for your hardware:- > > > > > > 1. Interrupt latency > > > 2. Task switching time > > > 3. hard-realtime scheduling latency > > > > > > Thank you, > > > > > > Jaswinder Singh. > > > - > > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > > > the body of a message to majordomo@vger.kernel.org > > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > Please read the FAQ at http://www.tux.org/lkml/ > > > > > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
-- Regards, Ankita Garg (ankita@in.ibm.com) Linux Technology Center IBM India Systems & Technology Labs, Bangalore, India - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |