Re: [Alsa-user] Buffer size adjust?
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Re: [Alsa-user] Buffer size adjust?
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From: Tobiah <to...@to...> - 2003-03-26 23:17:02
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Mark Knecht wrote:
> Tobiah,
> Hi. Can you provide some more info on how things are set up? If
> you've got the Delta44 IRQ on 9, then that's a good start. I do not
> understand how you moved the IRQ for video. That's normally not movable.
> Can you supply the complete output of an lspci -v command?
>
> What's the basic hardware of your machine? uP, memory, other
> peripherals, etc. This and the lspci info will help.
>
> Next, are you using Alsa by itself, or are you using Jack? I'm
> thinking there's a chance you are running the Delta44 at 24-bits/96KHz
> which could load up the machine a bit much.
>
> What sort of hard disks are you using to record?
>
> Anyway, let us know what's up and we'll try and help.
>
Yeah, I'd like to run at 24/96, but the problem exists
at CD quality too. It is not a horsepower issue, I
don't think, as my machine's stats indicate...
I have also been through three motherboards and two video
cards since I have had the Delta44... I have always had
this problem in linux, whether using straight ALSA, or
the commercial O$$ drivers.
I'm not using Jack, just arecord/aplay with ALSA drivers.
The problem is worse with X apps like XMMS. It is definately
video activity that most often causes the glitch, but it
still happens maybe a few times a minute if I don't touch
the screen. That is why I tried cutting the latency
of the video card. One of the best ways to glitch is
to Alt-tab to Mozilla.
Oh, and the video IRQ moved to four by itself when I
disabled my serial ports, otherwise I use my bios to
try to shuffle the irq of each slot around if I need to.
Thanks!
> free
total used free shared buffers cached
Mem: 514108 440744 73364 0 34296 313736
-/+ buffers/cache: 92712 421396
Swap: 1116508 19664 1096844
> cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 6
model name : AMD Athlon(tm) Processor
stepping : 2
cpu MHz : 1410.246
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat
bogomips : 2811.49
From dmesg:
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller on PCI bus 00 dev 89
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt8233 (rev 00) IDE UDMA100 controller on pci00:11.1
ide0: BM-DMA at 0xa400-0xa407, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xa408-0xa40f, BIOS settings: hdc:pio, hdd:DMA
hda: ST380021A, ATA DISK drive
hdb: WDC WD307AA, ATA DISK drive
hdd: 24X10, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=9729/255/63,
UDMA(100)
hdb: 60074784 sectors (30758 MB) w/2048KiB Cache, CHS=3739/255/63, UDMA(66)
> hdparm -t /dev/hda
/dev/hda:
Timing buffered disk reads: 64 MB in 1.58 seconds = 40.51 MB/sec
> lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT8367 [KT266]
Subsystem: Asustek Computer, Inc. A7V266-E
Flags: bus master, medium devsel, latency 0
Memory at fc000000 (32-bit, prefetchable) [size=32M]
Capabilities: [a0] AGP version 2.0
Capabilities: [c0] Power Management version 2
00:01.0 PCI bridge: VIA Technologies, Inc. VT8367 [KT333 AGP] (prog-if
00 [Norma
Flags: bus master, 66Mhz, medium devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: f6000000-f76fffff
Prefetchable memory behind bridge: f7700000-fbffffff
Capabilities: [80] Power Management version 2
00:0d.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 04)
Subsystem: Creative Labs CT4620 SBLive!
Flags: bus master, medium devsel, latency 32, IRQ 4
I/O ports at d800 [size=32]
Capabilities: [dc] Power Management version 1
00:0d.1 Input device controller: Creative Labs SB Live! MIDI/Game Port
(rev 01)
Subsystem: Creative Labs Gameport Joystick
Flags: bus master, medium devsel, latency 32
I/O ports at d400 [size=8]
Capabilities: [dc] Power Management version 1
00:0e.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139
Subsystem: Realtek Semiconductor Co., Ltd. RT8139
Flags: bus master, medium devsel, latency 32, IRQ 10
I/O ports at d000 [size=256]
Memory at f5800000 (32-bit, non-prefetchable) [size=256]
Capabilities: [50] Power Management version 2
00:0f.0 Multimedia audio controller: IC Ensemble Inc ICE1712 [Envy24]
(rev 02)
Subsystem: IC Ensemble Inc: Unknown device d633
Flags: bus master, medium devsel, latency 248, IRQ 9
I/O ports at b800 [size=32]
I/O ports at b400 [size=16]
I/O ports at b000 [size=16]
I/O ports at a800 [size=64]
Capabilities: [80] Power Management version 1
00:11.0 ISA bridge: VIA Technologies, Inc. VT8233 PCI to ISA Bridge
Subsystem: Asustek Computer, Inc.: Unknown device 8052
Flags: bus master, stepping, medium devsel, latency 0
Capabilities: [c0] Power Management version 2
00:11.1 IDE interface: VIA Technologies, Inc. VT82C586B PIPC Bus Master
IDE (rev
Flags: bus master, stepping, medium devsel, latency 32
I/O ports at a400 [size=16]
Capabilities: [c0] Power Management version 2
01:00.0 VGA compatible controller: nVidia Corporation NV17 [GeForce4
MX420] (rev
Flags: bus master, 66Mhz, medium devsel, latency 48, IRQ 4
Memory at f6000000 (32-bit, non-prefetchable) [size=16M]
Memory at f8000000 (32-bit, prefetchable) [size=64M]
Memory at f7800000 (32-bit, prefetchable) [size=512K]
Expansion ROM at f77e0000 [disabled] [size=128K]
Capabilities: [60] Power Management version 2
Capabilities: [44] AGP version 2.0
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