Re: PCM distorsion snapshots from SATA/ALSA conflict (was: [Alsa-user] Pb with simultaneous SATA and ALSA I/O)

(it's probably a bad idea to attach .jpgs to a LKML post - please post
them on the web and send a URL)

On Sun, 2006-10-08 at 12:38 +0200, Dominique Dumont wrote:
> Anyway, the oscilloscope shows that:
> - a spike occurs every 330 useconds (about 3kHz)
>   (note: 330us is 15.85 times the period of the 48KHz spdif stream) 
> - the spike level roughly matches the level of the sine waves 330
>   useconds sooner
> 

You seem to be using a period size of 256 samples - any change if you
use a larger period size?

Any change if you use setpci to increase LATENCY_TIMER for the SBLive!
card?

Lee

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [Alsa-user] PCM distorsion snapshots from SATA/ALSA conflict
    • From: Dominique Dumont <[email protected]>

• References:
  • Re: [Alsa-user] Pb with simultaneous SATA and ALSA I/O
    • From: Dominique Dumont <[email protected]>
  • Re: [Alsa-user] Pb with simultaneous SATA and ALSA I/O
    • From: Lee Revell <[email protected]>
  • Re: [Alsa-user] Pb with simultaneous SATA and ALSA I/O
    • From: Dominique Dumont <[email protected]>
  • Re: [Alsa-user] Pb with simultaneous SATA and ALSA I/O
    • From: Lee Revell <[email protected]>
  • Re: [Alsa-user] Pb with simultaneous SATA and ALSA I/O
    • From: Alan Cox <[email protected]>
  • PCM distorsion snapshots from SATA/ALSA conflict (was: [Alsa-user] Pb with simultaneous SATA and ALSA I/O)
    • From: Dominique Dumont <[email protected]>

• Prev by Date: [BUG]: can not compile 2.6.19-rc1: 'boot_cpu_data' undeclared
• Next by Date: Re: [PATCH 1/12] i386: Distinguish absolute symbols
• Previous by thread: PCM distorsion snapshots from SATA/ALSA conflict (was: [Alsa-user] Pb with simultaneous SATA and ALSA I/O)
• Next by thread: Re: [Alsa-user] PCM distorsion snapshots from SATA/ALSA conflict
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]