> Per the ossinfo output, vmix is still enabled on the 4.1 snapshot. It's just
> integrated into osscore and not a separate driver anymore. (You can see the
> number of engines is larger than the number of devices. 12/8 difference is
> because vmix creates only 4 engines by default rather than 8 - if new ones
> are
> needed they are created dynamically).
Thanks for noticing and explaining this, as you guessed I assumed no vmix as
lsmod did not show the (4.0) vmix driver loaded. I wondered why the vmix kernel
module had not been built and installed.
> Hmm... Is the IRQ shared with some other device? 'lspci' can show this.
/proc/interrupts shows:
16: 1397 IO-APIC-fasteoi uhci_hcd:usb1, [EMAIL
PROTECTED]:0000:00:02.0, oss_hdaudio0
Which I thought meant it was shared, but lspci shows (no other 00:1b.XX device)
:
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio
Controller (rev 03)
However, listing the hdaudio0 interrupt count via /proc/interrupts or ossinfo
shows the count
remains static until my simple test program opens /dev/dsp which I took to be
confirmation
that these really were hdaudio0 interrupts ???
> Second, what happens if vmix is disabled?
The interrupt count drops to a single interrupt for hdaudio0 when /dev/dsp is
opened for a second !
Please could you explain the vmix induced hdaudio0 interrupts ?
My standard platform uses OSS 4.0 + vmix, any thoughts on how to reduce the
interrupt rate
for this configuration ? (I'm about to try 4.0 without vmix to verify the above
4.1 result)
Many thanks.
# lspci
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory
Controller Hub (rev 0c)
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960
Integrated Graphics Controller (rev 0c)
00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated
Graphics Controller (rev 0c)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI
Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio
Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1
(rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2
(rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6
(rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI
Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller
(rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE
Controller (rev 03)
00:1f.2 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA IDE
Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
02:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5906M Fast
Ethernet PCI Express (rev 02)
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network
Connection (rev 02)
04:06.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
04:06.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host
Adapter (rev 22)
04:06.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
04:06.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter
(rev ff)
# cat /proc//interrupts
CPU0
0: 55452 IO-APIC-edge timer
1: 74 IO-APIC-edge i8042
8: 3 IO-APIC-edge rtc
9: 1 IO-APIC-fasteoi acpi
12: 125 IO-APIC-edge i8042
14: 0 IO-APIC-edge libata
15: 0 IO-APIC-edge libata
16: 1780 IO-APIC-fasteoi uhci_hcd:usb1, [EMAIL
PROTECTED]:0000:00:02.0, oss_hdaudio0
17: 3826 IO-APIC-fasteoi uhci_hcd:usb2, libata
18: 2 IO-APIC-fasteoi uhci_hcd:usb3, ehci_hcd:usb7
19: 53 IO-APIC-fasteoi uhci_hcd:usb4
20: 2 IO-APIC-fasteoi uhci_hcd:usb5, ohci1394
21: 0 IO-APIC-fasteoi ehci_hcd:usb6
22: 0 IO-APIC-fasteoi sdhci:slot0
219: 1066 PCI-MSI-edge eth0
220: 588 PCI-MSI-edge iwl3945
NMI: 0 Non-maskable interrupts
LOC: 6185 Local timer interrupts
RES: 0 Rescheduling interrupts
CAL: 0 function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
SPU: 0 Spurious interrupts
ERR: 0
MIS: 0
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