Hi,
I use a desktop system powered by OpenBSD 4.3-stable with GENERIC.MP
kernel (amd64, up to date as of now). I listen music with mplayer while
I work, and sometime my system feel very slow. A top show that CPU0 is
spending 80% time in interrupts, and leaving mplayer calm the system
down. Is there anything I can do to avoid that, or any information I
can provide to help fix it ?
Output of vmstat during the storm :
$ vmstat -i ; date
interrupt total rate
irq0/clock 52831315 199
irq0/ipi 433351 1
irq21/em0 2086433 7
irq22/ehci0 419 0
irq16/azalia0 41947453 158
irq17/uhci3 187832 0
irq18/uhci4 904230 3
irq23/ehci1 312 0
irq18/ahci0 2643142 10
irq1/pckbc0 8838 0
Total 101043325 382
Thu Aug 28 10:23:07 CEST 2008
$ vmstat -i ; date
interrupt total rate
irq0/clock 52832177 199
irq0/ipi 433352 1
irq21/em0 2086454 7
irq22/ehci0 419 0
irq16/azalia0 42571537 161
irq17/uhci3 187833 0
irq18/uhci4 904279 3
irq23/ehci1 312 0
irq18/ahci0 2643151 10
irq1/pckbc0 8838 0
Total 101668352 384
Thu Aug 28 10:23:11 CEST 2008
This is 624084 interrupts for azalia0 in less than five seconds (wow).
Normal rate is less than 100 interrupts for the same period of time.
pcidump :
0:0:0: Intel 82Q35 Host
0:1:0: Intel 82Q35 PCIE
0:3:0: Intel 82Q35 HECI
0:3:2: Intel 82Q35 PT IDER
0:3:3: Intel 82Q35 KT
0:25:0: Intel ICH9 IGP AMT
0:26:0: Intel 82801I USB
0:26:1: Intel 82801I USB
0:26:7: Intel 82801I USB
0:27:0: Intel 82801I HD Audio
0:28:0: Intel 82801I PCIE
0:29:0: Intel 82801I USB
0:29:1: Intel 82801I USB
0:29:2: Intel 82801I USB
0:29:7: Intel 82801I USB
0:30:0: Intel 82801BA Hub-to-PCI
0:31:0: Intel 82801IO LPC
0:31:2: Intel 82801I AHCI
0:31:3: Intel 82801I SMBus
1:0:0: ATI Radeon HD 2400 XT
dmesg :
OpenBSD 4.3-stable (bsd) #2: Fri Jul 25 14:34:38 CEST 2008
[EMAIL PROTECTED]:/root/bsd
real mem = 2111426560 (2013MB)
avail mem = 2038558720 (1944MB)
RTC BIOS diagnostic error 11<memory_size>
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.5 @ 0xf0450 (80 entries)
bios0: vendor Dell Inc. version "A09" date 03/11/2008
bios0: Dell Inc. OptiPlex 755
acpi0 at bios0: rev 2
acpi0: tables DSDT FACP SSDT APIC BOOT ASF! MCFG HPET TCPA ____ SLIC SSDT SSDT
SSDT
acpi0: wakeup devices VBTN(S4) PCI0(S5) PCI4(S5) PCI2(S5) PCI3(S5) PCI1(S5)
PCI5(S5) PCI6(S5) MOU_(S3) USB0(S3) USB1(S3) USB2(S3) USB3(S3) USB4(S3) USB5(S3)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM)2 Duo CPU E8200 @ 2.66GHz, 2660.38 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,EST,TM2,CX16,xTPR,NXE,LONG
cpu0: 6MB 64b/line 16-way L2 cache
cpu0: apic clock running at 332MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM)2 Duo CPU E8200 @ 2.66GHz, 2659.99 MHz
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,EST,TM2,CX16,xTPR,NXE,LONG
cpu1: 6MB 64b/line 16-way L2 cache
ioapic0 at mainbus0 apid 8 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 0, remapped to apid 8
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 3 (PCI4)
acpiprt1 at acpi0: bus 2 (PCI2)
acpiprt2 at acpi0: bus -1 (PCI3)
acpiprt3 at acpi0: bus 1 (PCI1)
acpiprt4 at acpi0: bus -1 (PCI5)
acpiprt5 at acpi0: bus -1 (PCI6)
acpiprt6 at acpi0: bus 0 (PCI0)
acpicpu0 at acpi0: FVS, 2667, 2333, 2000 MHz
acpicpu1 at acpi0: FVS, 2667, 2333, 2000 MHz
acpibtn0 at acpi0: VBTN
pci0 at mainbus0 bus 0: configuration mode 1
pchb0 at pci0 dev 0 function 0 "Intel 82Q35 Host" rev 0x02
ppb0 at pci0 dev 1 function 0 "Intel 82Q35 PCIE" rev 0x02: apic 8 int 16 (irq
11)
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "ATI Radeon HD 2400 XT" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
"Intel 82Q35 HECI" rev 0x02 at pci0 dev 3 function 0 not configured
pciide0 at pci0 dev 3 function 2 "Intel 82Q35 PT IDER" rev 0x02: DMA
(unsupported), channel 0 wired to native-PCI, channel 1 wired to native-PCI
pciide0: using apic 8 int 18 (irq 9) for native-PCI interrupt
pciide0: channel 0 ignored (not responding; disabled or no drives?)
pciide0: channel 1 ignored (not responding; disabled or no drives?)
"Intel 82Q35 KT" rev 0x02 at pci0 dev 3 function 3 not configured
em0 at pci0 dev 25 function 0 "Intel ICH9 IGP AMT" rev 0x02: apic 8 int 21 (irq
4), address 00:1e:4f:c5:11:9f
uhci0 at pci0 dev 26 function 0 "Intel 82801I USB" rev 0x02: apic 8 int 16 (irq
11)
uhci1 at pci0 dev 26 function 1 "Intel 82801I USB" rev 0x02: apic 8 int 17 (irq
5)
ehci0 at pci0 dev 26 function 7 "Intel 82801I USB" rev 0x02: apic 8 int 22 (irq
5)
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
azalia0 at pci0 dev 27 function 0 "Intel 82801I HD Audio" rev 0x02: apic 8 int
16 (irq 11)
azalia0: RIRB time out
azalia0: RIRB time out
azalia0: codec[s]: Analog Devices AD1984
audio0 at azalia0
ppb1 at pci0 dev 28 function 0 "Intel 82801I PCIE" rev 0x02: apic 8 int 16 (irq
11)
pci2 at ppb1 bus 2
uhci2 at pci0 dev 29 function 0 "Intel 82801I USB" rev 0x02: apic 8 int 23 (irq
3)
uhci3 at pci0 dev 29 function 1 "Intel 82801I USB" rev 0x02: apic 8 int 17 (irq
5)
uhci4 at pci0 dev 29 function 2 "Intel 82801I USB" rev 0x02: apic 8 int 18 (irq
9)
ehci1 at pci0 dev 29 function 7 "Intel 82801I USB" rev 0x02: apic 8 int 23 (irq
3)
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb2 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0x92
pci3 at ppb2 bus 3
pcib0 at pci0 dev 31 function 0 "Intel 82801IO LPC" rev 0x02
ahci0 at pci0 dev 31 function 2 "Intel 82801I AHCI" rev 0x02: apic 8 int 18
(irq 9), AHCI 1.2
ahci0: PHY offline on port 2
ahci0: PHY offline on port 3
ahci0: PHY offline on port 5
scsibus0 at ahci0: 32 targets
sd0 at scsibus0 targ 0 lun 0: <ATA, ST3250310AS, 3.AD> SCSI3 0/direct fixed
sd0: 238418MB, 30394 cyl, 255 head, 63 sec, 512 bytes/sec, 488281250 sec total
cd0 at scsibus0 targ 1 lun 0: <TSSTcorp, DVD+-RW TS-H653B, D300> SCSI0 5/cdrom
removable
ichiic0 at pci0 dev 31 function 3 "Intel 82801I SMBus" rev 0x02: apic 8 int 18
(irq 9)
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 1GB DDR2 SDRAM non-parity PC2-5300CL5
spdmem1 at iic0 addr 0x52: 1GB DDR2 SDRAM non-parity PC2-5300CL5
usb2 at uhci0: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci1: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb4 at uhci2: USB revision 1.0
uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb5 at uhci3: USB revision 1.0
uhub5 at usb5 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb6 at uhci4: USB revision 1.0
uhub6 at usb6 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
uhub7 at uhub1 port 3 "Standard Microsystems product 0x2514" rev 2.00/0.00 addr
2
uhidev0 at uhub6 port 1 configuration 1 interface 0 "Logitech Optical USB
Mouse" rev 2.00/3.40 addr 2
uhidev0: iclass 3/1
ums0 at uhidev0: 3 buttons and Z dir.
wsmouse0 at ums0 mux 0
uhidev1 at uhub5 port 2 configuration 1 interface 0 "Dell Dell USB Keyboard"
rev 1.10/3.52 addr 2
uhidev1: iclass 3/1
ukbd0 at uhidev1: 8 modifier keys, 6 key codes
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
softraid0 at root
root on sd0a swap on sd0b dump on sd0b
