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Date:      Tue, 19 Oct 2004 14:22:38 -0000
From:      "Daniel Eriksson" <daniel_k_eriksson@telia.com>
To:        <freebsd-current@freebsd.org>
Subject:   Interrupts being reported twice?
Message-ID:  <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAA0VcX9IoJqUaXPS8MjT1PdsKAAAAQAAAA+dfEvScDbEOv79Rng+p7kgEAAAAA@telia.com>

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I am either getting a lot of extra interrupts, or they are getting reported
twice. This is probably not a new problem, but after switching some cards
around and enabling ACPI (trying to eliminate a recurring crash, see thread
"Current crash on today's kernel" for details) I am now seeing this for the
first time.

# vmstat -i
interrupt                total       rate
irq1: atkbd0                 2          0
irq4: sio0                 627          0
irq6: fdc0                  10          0
irq8: rtc               763024        127
irq13: npx0                  1          0
irq14: ata0              48429          8
irq15: ata1              48409          8
irq16: atapci1+       15482279       2596 <-- should be low (<100)
irq18: atapci3            4689          0
irq19: atapci4+           3001          0
irq20: em0            15206541       2550 <-- Real source of interrupts
irq21: em1 ahc0         502577         84
irq0: clk              5960581        999
Total                 38020170       6377

The two marked values follow each other, with IRQ16 always 20-100 higher
than IRQ20. Is this anything to worry about? The interrupt load reported by
'top' does not seem to be very high, so either the isr for IRQ16 is very
cheap, or it isn't executed at all.

Hardware:
* Dual Athlon MP on a Tyan Tiger S2466N-4M motherboard (AMD 760MPX chipset),
1GB ECC DDR
* Intel Pro/1000 MT Dual Port + Adaptec 29160 in the two 64bit/66MHz PCI
slots
* 2 x HighPoint RocketRAID 454 + Promise SATA150 TX4 in 32bit/33MHz PCI
slots (one slot free)

Software:
* 6-CURRENT from today (2004.10.19.11.00.00), compiled with "*FLAGS= -O2
-pipe" and "CPUTYPE?=athlon-xp"
* SMP, APIC+ACPI, SCHED_4BSD, HZ=1000, ZERO_COPY_SOCKETS, AHC_ALLOW_MEMIO
* debug.mpsafenet="1", harvest_interrupt="NO", harvest_ethernet="NO",
net.isr.enable=1
* ataraid, geom_vinum

Below is the dmesg and output from mptable.

/Daniel Eriksson


/boot/kernel/acpi.ko text=0x469f8 data=0x1ce4+0x112c
syms=[0x4+0x7000+0x4+0x93a8]
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2004 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD 6.0-CURRENT #1: Tue Oct 19 13:32:08 CEST 2004
    daniel@xxx.xxx.xxx:/usr/obj/usr/src/sys/XXX
ACPI APIC Table: <PTLTD          APIC  >
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(tm) MP 2600+ (2000.08-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0x6a0  Stepping = 0
 
Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,
CMOV,PAT,PSE36,MMX,FXSR,SSE>
  AMD Features=0xc0480000<MP,AMIE,DSP,3DNow!>
real memory  = 1073217536 (1023 MB)
avail memory = 1040670720 (992 MB)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  1
 cpu1 (AP): APIC ID:  0
MADT: Forcing active-low polarity and level trigger for SCI
ioapic0 <Version 1.1> irqs 0-23 on motherboard
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <PTLTD   RSDT> on motherboard
acpi0: Power Button (fixed)
acpi0: Sleep Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x8008-0x800b on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0x8080-0x80ff,0x8000-0x807f,0xcf8-0xcff
iomem 0xd8000-0xdbfff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <AMD 762 host to AGP bridge> port 0x1490-0x1493 mem
0xea100000-0xea100fff,0xec000000-0xedffffff at device 0.0 on pci0
pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
pci1: <display, VGA> at device 5.0 (no driver attached)
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <AMD 768 UDMA100 controller> port
0xf000-0xf00f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 7.1 on pci0
ata0: channel #0 on atapci0
ata1: channel #1 on atapci0
pci0: <bridge, PCI-unknown> at device 7.3 (no driver attached)
em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.35> port
0x1400-0x143f mem 0xe8000000-0xe803ffff,0xe8080000-0xe809ffff irq 20 at
device 8.0 on pci0
em0: Ethernet address: 00:04:23:ac:20:8a
em0:  Speed:N/A  Duplex:N/A
em1: <Intel(R) PRO/1000 Network Connection, Version - 1.7.35> port
0x1440-0x147f mem 0xe8040000-0xe807ffff,0xe80a0000-0xe80bffff irq 21 at
device 8.1 on pci0
em1: Ethernet address: 00:04:23:ac:20:8b
em1:  Speed:N/A  Duplex:N/A
ahc0: <Adaptec 29160 Ultra160 SCSI adapter> port 0x1000-0x10ff mem
0xe80c0000-0xe80c0fff irq 21 at device 9.0 on pci0
ahc0: [GIANT-LOCKED]
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
pcib2: <ACPI PCI-PCI bridge> at device 16.0 on pci0
pci2: <ACPI PCI bus> on pcib2
atapci1: <HighPoint HPT374 (channel 0+1) UDMA133 controller> port
0x2000-0x20ff,0x30d0-0x30d3,0x30d8-0x30df,0x30d4-0x30d7,0x30e0-0x30e7 irq 16
at device 4.0 on pci2
ata2: channel #0 on atapci1
ata3: channel #1 on atapci1
atapci2: <HighPoint HPT374 (channel 2+3) UDMA133 controller> port
0x2400-0x24ff,0x30e8-0x30eb,0x30f0-0x30f7,0x30ec-0x30ef,0x30f8-0x30ff irq 16
at device 4.1 on pci2
ata4: channel #0 on atapci2
ata5: channel #1 on atapci2
atapci3: <Promise PDC20318 SATA150 controller> port
0x3000-0x307f,0x30c0-0x30cf,0x3080-0x30bf mem
0xea000000-0xea01ffff,0xea021000-0xea021fff irq 18 at device 6.0 on pci2
atapci3: failed: rid 0x20 is memory, requested 4
ata6: channel #0 on atapci3
ata7: channel #1 on atapci3
ata8: channel #2 on atapci3
ata9: channel #3 on atapci3
atapci4: <HighPoint HPT374 (channel 0+1) UDMA133 controller> port
0x2800-0x28ff,0x3400-0x3403,0x3408-0x340f,0x3404-0x3407,0x3410-0x3417 irq 19
at device 7.0 on pci2
ata10: channel #0 on atapci4
ata11: channel #1 on atapci4
atapci5: <HighPoint HPT374 (channel 2+3) UDMA133 controller> port
0x2c00-0x2cff,0x3418-0x341b,0x3420-0x3427,0x341c-0x341f,0x3428-0x342f irq 19
at device 7.1 on pci2
ata12: channel #0 on atapci5
ata13: channel #1 on atapci5
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on
acpi0
sio0: type 16550A, console
fdc0: <floppy drive controller> port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on acpi0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xe0000-0xe3fff,0xc0000-0xcafff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x100>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
Timecounters tick every 1.000 msec
ipfw2 initialized, divert enabled, rule-based forwarding disabled, default
to accept, logging unlimited
ad0: 117800MB <IC35L120AVV207-0/V24OA66A> [239340/16/63] at ata0-master
UDMA100
ad1: 117800MB <HDS722512VLAT20/V33OA60A> [239340/16/63] at ata0-slave
UDMA100
ad2: 117800MB <IC35L120AVV207-0/V24OA66A> [239340/16/63] at ata1-master
UDMA100
ad3: 117800MB <IC35L120AVV207-0/V24OA66A> [239340/16/63] at ata1-slave
UDMA100
ad4: 238475MB <WDC WD2500JB-00FUA0/15.05R15> [484521/16/63] at ata2-master
UDMA100
ad5: 238475MB <WDC WD2500JB-00FUA0/15.05R15> [484521/16/63] at ata2-slave
UDMA100
ad6: 239372MB <Maxtor 4A250J0/RAMB1TU0> [486344/16/63] at ata3-master
UDMA133
ad7: 239372MB <Maxtor 5A250J0/RAMB1TV0> [486344/16/63] at ata3-slave UDMA133
ad8: 194481MB <Maxtor 6Y200P0/YAR41BW0> [395136/16/63] at ata4-master
UDMA133
ad9: 194481MB <Maxtor 6Y200P0/YAR41VW0> [395136/16/63] at ata4-slave UDMA133
ad10: 194481MB <Maxtor 6Y200P0/YAR41BW0> [395136/16/63] at ata5-master
UDMA133
ad11: 239372MB <Maxtor 7Y250P0/YAR41BW0> [486344/16/63] at ata5-slave
UDMA133
ad12: 239372MB <Maxtor 7Y250M0/YAR51EW0> [486344/16/63] at ata6-master
SATA150
ad14: 238475MB <WDC WD2500JD-00FYB0/02.05D02> [484521/16/63] at ata7-master
SATA150
ad16: 239372MB <Maxtor 6B250S0/BANC1980> [486344/16/63] at ata8-master
SATA150
ad20: 114473MB <ST3120022A/3.06> [232581/16/63] at ata10-master UDMA100
ad21: 114473MB <ST3120022A/3.06> [232581/16/63] at ata10-slave UDMA100
ad22: 117246MB <Maxtor 6Y120L0/YAR41BW0> [238216/16/63] at ata11-master
UDMA133
ad23: 117246MB <Maxtor 6Y120L0/YAR41BW0> [238216/16/63] at ata11-slave
UDMA133
ad24: 114473MB <WDC WD1200JB-00DUA3/75.13B75> [232581/16/63] at ata12-master
UDMA100
ar0: 476950MB <ATA RAID0 array> [60802/255/63] status: READY subdisks:
 disk0 READY on ad4 at ata2-master
 disk1 READY on ad5 at ata2-slave
ar1: 478744MB <ATA RAID0 array> [61031/255/63] status: READY subdisks:
 disk0 READY on ad6 at ata3-master
 disk1 READY on ad7 at ata3-slave
ar2: 388962MB <ATA RAID0 array> [49585/255/63] status: READY subdisks:
 disk0 READY on ad9 at ata4-slave
 disk1 READY on ad8 at ata4-master
ar3: 228946MB <ATA RAID0 array> [29186/255/63] status: READY subdisks:
 disk0 READY on ad23 at ata11-slave
 disk1 READY on ad24 at ata12-master
Waiting 5 seconds for SCSI devices to settle
em1: Link is up 100 Mbps Full Duplex
sa0 at ahc0 bus 0 target 5 lun 0
sa0: <Seagate STT20000N 6A51> Removable Sequential Access SCSI-2 device 
sa0: 10.000MB/s transfers (10.000MHz, offset 15)
da0 at ahc0 bus 0 target 0 lun 0
da0: <QUANTUM ATLAS 10K 9WLS UCH0> Fixed Direct Access SCSI-3 device 
da0: 40.000MB/s transfers (20.000MHz, offset 31, 16bit), Tagged Queueing
Enabled
da0: 8759MB (17938986 512 byte sectors: 255H 63S/T 1116C)
da1 at ahc0 bus 0 target 1 lun 0
da1: <QUANTUM ATLAS 10K 9WLS UCH0> Fixed Direct Access SCSI-3 device 
da1: 40.000MB/s transfers (20.000MHz, offset 31, 16bit), Tagged Queueing
Enabled
da1: 8759MB (17938986 512 byte sectors: 255H 63S/T 1116C)
da2 at ahc0 bus 0 target 10 lun 0
da2: <IBM DDYS-T36950N S93E> Fixed Direct Access SCSI-3 device 
da2: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing
Enabled
da2: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C)
da3 at ahc0 bus 0 target 11 lun 0
da3: <IBM IC35L036UWD210-0 S5CQ> Fixed Direct Access SCSI-3 device 
da3: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing
Enabled
da3: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C)
da4 at ahc0 bus 0 target 12 lun 0
da4: <IBM DDYS-T36950N S93E> Fixed Direct Access SCSI-3 device 
da4: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing
Enabled
da4: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C)
da5 at ahc0 bus 0 target 13 lun 0
da5: <IBM DDYS-T36950N S93E> Fixed Direct Access SCSI-3 device 
da5: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing
Enabled
da5: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C)
SMP: AP CPU #1 Launched!
Mounting root from ufs:/dev/da0s1a


# mptable 

============================================================================
===

MPTable, version 2.0.15

----------------------------------------------------------------------------
---

MP Floating Pointer Structure:

  location:                     BIOS
  physical address:             0x000f7170
  signature:                    '_MP_'
  length:                       16 bytes
  version:                      1.4
  checksum:                     0x6b
  mode:                         Virtual Wire

----------------------------------------------------------------------------
---

MP Config Table Header:

  physical address:             0x0009bc70
  signature:                    'PCMP'
  base table length:            316
  version:                      1.4
  checksum:                     0x8c
  OEM ID:                       'TYAN    '
  Product ID:                   'PAULANER    '
  OEM table pointer:            0x00000000
  OEM table size:               0
  entry count:                  31
  local APIC address:           0xfee00000
  extended table length:        324
  extended table checksum:      18

----------------------------------------------------------------------------
---

MP Config Base Table Entries:

--
Processors:     APIC ID Version State           Family  Model   Step
Flags
                 1       0x10    BSP, usable     6       10      0
0x383fbff
                 0       0x10    AP, usable      6       10      0
0x383fbff
--
Bus:            Bus ID  Type
                 0       PCI   
                 1       PCI   
                 2       PCI   
                 3       ISA   
--
I/O APICs:      APIC ID Version State           Address
                 2       0x11    usable          0xfec00000
--
I/O Ints:       Type    Polarity    Trigger     Bus ID   IRQ    APIC ID PIN#
                ExtINT  active-hi        edge        3     0          2    0
                INT     active-hi        edge        3     1          2    1
                INT     active-hi        edge        3     0          2    2
                INT     active-lo       level        0   8:B          2   17
                INT     active-hi        edge        3     4          2    4
                INT     active-lo       level        0   8:A          2   16
                INT     active-hi        edge        3     6          2    6
                INT     active-hi        edge        3     7          2    7
                INT     active-hi        edge        3     8          2    8
                INT     active-hi        edge        3     9          2    9
                INT     active-lo       level        2   7:A          2   19
                INT     active-lo       level        1   5:A          2   18
                INT     active-hi        edge        3    12          2   12
                INT     active-hi        edge        3    13          2   13
                INT     active-hi        edge        3    14          2   14
                INT     active-hi        edge        3    15          2   15
                INT     active-lo       level        0   9:A          2   17
                INT     active-lo       level        2   0:C          2   19
                INT     active-lo       level        2   4:A          2   16
                INT     active-lo       level        2   4:A          2   16
                INT     active-lo       level        2   6:A          2   18
                INT     active-lo       level        2   7:A          2   19
--
Local Ints:     Type    Polarity    Trigger     Bus ID   IRQ    APIC ID PIN#
                ExtINT  active-hi        edge        3     0        255    0
                NMI     active-hi        edge        1   0:A        255    1

----------------------------------------------------------------------------
---

MP Config Extended Table Entries:

--
System Address Space
 bus ID: 0 address type: I/O address
 address base: 0x0
 address range: 0x10000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0x40000000
 address range: 0xaa100000
--
System Address Space
 bus ID: 0 address type: prefetch address
 address base: 0xea100000
 address range: 0xdf00000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xf8000000
 address range: 0x6e00000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xfee01000
 address range: 0x11ff000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xa0000
 address range: 0x24000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xc8000
 address range: 0x2000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xcc000
 address range: 0x2000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xd0000
 address range: 0x1000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xd2000
 address range: 0x1000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xd4000
 address range: 0x1000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xd6000
 address range: 0x1000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xd8000
 address range: 0x2000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xe0000
 address range: 0x12000
--
System Address Space
 bus ID: 0 address type: memory address
 address base: 0xf8000
 address range: 0x4000
--
Bus Heirarchy
 bus ID: 3 bus info: 0x01 parent bus ID: 0
--
Compatibility Bus Address
 bus ID: 0 address modifier: add
 predefined range: 0x00000000
--
Compatibility Bus Address
 bus ID: 0 address modifier: add
 predefined range: 0x00000001

============================================================================
===




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