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* [2.6.33-rc1] [SOUND] HDA: high cpu usage, noise
@ 2009-12-20 17:27 Maciej Rutecki
  2009-12-21 10:28 ` Takashi Iwai
  0 siblings, 1 reply; 12+ messages in thread
From: Maciej Rutecki @ 2009-12-20 17:27 UTC (permalink / raw)
  To: Linux Kernel Mailing List, alsa-devel, perex, tiwai,
	Rafael J. Wysocki

Hi

Affected kernel: 2.6.33-rc1
Last known good: 2.6.32

Hadware:
/proc/asound/pcm
00-00: AD198x Analog : AD198x Analog : playback 1 : capture 1
00-06: Si3054 Modem : Si3054 Modem : playback 1 : capture 1

I notice high cpu load during idle/playing sounds. From "ps aux":

USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root      1119 26.4  0.0      0     0 ?        R    18:09   1:47 [hd-audio0]

Also I hear noise, during (probably) disk I/O operations. Any suggestions?

cat /proc/interrupts
           CPU0       CPU1
  0:      58385          0   IO-APIC-edge      timer
  1:         77        201   IO-APIC-edge      i8042
  8:          1          0   IO-APIC-edge      rtc0
  9:         67        117   IO-APIC-fasteoi   acpi
 12:        157      14303   IO-APIC-edge      i8042
 14:       1625          0   IO-APIC-edge      ata_piix
 15:          0          0   IO-APIC-edge      ata_piix
 16:       1115          0   IO-APIC-fasteoi   i915@pci:0000:00:02.0, eth0
 18:          0          0   IO-APIC-fasteoi   yenta, uhci_hcd:usb4
 19:          1          0   IO-APIC-fasteoi   ohci1394, uhci_hcd:usb5
 20:        146          2   IO-APIC-fasteoi   ehci_hcd:usb1, uhci_hcd:usb2
 21:          0          0   IO-APIC-fasteoi   uhci_hcd:usb3
 27:       4013      10861   PCI-MSI-edge      ahci
 28:       3452          0   PCI-MSI-edge      iwl3945
 29:    1556997          0   PCI-MSI-edge      HDA Intel
NMI:          0          0   Non-maskable interrupts
LOC:      16143      35244   Local timer interrupts
SPU:          0          0   Spurious interrupts
PMI:          0          0   Performance monitoring interrupts
PND:          0          0   Performance pending work
RES:      27154     126864   Rescheduling interrupts
CAL:         59         34   Function call interrupts
TLB:        899        748   TLB shootdowns
TRM:          0          0   Thermal event interrupts
THR:          0          0   Threshold APIC interrupts
MCE:          0          0   Machine check exceptions
MCP:          1          1   Machine check polls
ERR:          0
MIS:          0

Config, dmesg and lspci:
http://unixy.pl/maciek/download/kernel/2.6.33-rc1/gumis/

-- 
Maciej Rutecki
http://www.maciek.unixy.pl

^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2009-12-23 15:02 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-12-20 17:27 [2.6.33-rc1] [SOUND] HDA: high cpu usage, noise Maciej Rutecki
2009-12-21 10:28 ` Takashi Iwai
2009-12-21 18:12   ` Maciej Rutecki
2009-12-21 19:08     ` Éric Piel
2009-12-22  7:04       ` Takashi Iwai
2009-12-22  9:15         ` Éric Piel
2009-12-22  9:17           ` Takashi Iwai
2009-12-22 15:15             ` Éric Piel
2009-12-22 15:40               ` Takashi Iwai
2009-12-22 15:42                 ` Éric Piel
2009-12-23 14:27             ` Éric Piel
2009-12-23 15:02               ` Takashi Iwai

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