Here is the kernel dump: [] post_schedule_rt [] finish_task_switch [] __schedule [] check_preempt_curr_rt [] try_to_wake_up [] wake_up_process [] e1000_intr_msi [] handle_IRQ_event [] preempt_schedule [] do_irqd [] do_irqd [] kthread [] kthread [] kernel_thread_helper EIP: push_rt_task Node: IRQ-217[1433] exited with preempt_count 2 I have got this when I run my app on octa core xeon (Xeon x5482 3.2GHz). I'll run my app with linux-2.6.24.7-rt21 during the weekend and see where it goes... Thanks, Amir. -----Original Message----- From: Carsten Emde [mailto:Carsten.Emde@xxxxxxxxx] Sent: Thursday, November 13, 2008 9:42 AM To: Amir Aharon Cc: RT-Users Subject: Re: config_preempt_RT patch platform support question. Amir, > I work on a project which delivers low latency audio streaming via a > Linux machine. I receive/send audio frames of 4 samples each per > network frame (raw Ethernet) so I expect to have a network interrupt > each 90 microseconds. I use Linux 2.6.26.3-rt7 on different > platforms; unfortunately we encountered problems such as kernel > panics, depend on the platform running... The PREEMPT_RT patches for kernel 2.6.26 are still under development. Please post the various kernel messages you are observing. BTW: The most recent 2.6.26 patch is 2.6.26.6-rt11. > My questions are: How can I have more details on the tests which > where used to evaluate the platform running the config_preempt_RT > (specifically on networking issues)? Does Intel Q6600 2.4GHz (quad > core) has been tested? Are there known issues? Does Xeon x5482 3.2GHz > (x2 meaning octa core) has been tested? Are there known issues? For the time being, linux-2.6.24.7-rt21 is believed to be stable and ready for production. This version has been tested heavily under x86 (slow/fast machines, single/dual/quad core, 32/64 bit) and under various PPC platforms. It has been tested less heavily on ARMs and MIPSes. There are no known issues on x86 platforms. Would you mind to run 2.6.24.7-rt21 on your machines? Carsten. -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
