![]() | |||||||||||||
Messages in this thread |
Lee Revell <rlrevell@joe-job.com> writes: > It might not be interrupt related, it could be DMA starvation. This has > been observed with some SATA controllers while testing the -rt patches. > The symptom is that the latency traces show the machine going in "slow > motion". > > Dominique: try the -rt kernel, enable latency tracing and post the > output. Done. I've tried with 2.6.18-rt5. CONFIG_LATENCY_TRACE is enabled. Here are the results (still with running "ac3dec -C " and "md5sum *" on a SATA drive): - I get no more ALSA xrun. - /proc/latency_trace is empty - dolby digital output is still considerably chopped. Note that the dolby digital output works fine when: - No I/O is done - heavy I/O on pata HDD (md5sum *) - heavy I/O on DVD reader (md5sum *) Did I miss something with the latency_trace ? Cheers - 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/ | ||||||||||||
| Last update: 2006-10-04 12:49 [from the cache] ©2003-2008 | |||||||||||||