Date: Mon, 19 Jul 2004 02:43:52 +0200 From: "Daniel Eriksson" <daniel_k_eriksson@telia.com> To: <freebsd-current@freebsd.org> Subject: Kernel preemption leads to SATA instability (how to debug?) Message-ID: <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAA0VcX9IoJqUaXPS8MjT1PdsKAAAAQAAAAg2tdUeRFt0KlmWj16YeSrgEAAAAA@telia.com>
index | next in thread | raw e-mail
[-- Attachment #1 --]
Hi, I'm getting SATA instability on my system with kernel preemption
enabled. When accessing the SATA discs at the same time as other discs (for
example during a fsck of all file systems on the machine) it only takes a
few seconds for the SATA discs to start reporting things like this:
Interrupt storm detected on "irq20: atapci4"; throttling interrupt source
ad20: FAILURE - already active DMA on this device
ad20: setting up DMA failed
This is on a recent kernel (2004.07.18.05.00.00), but it's been like this
ever since the kernel preemption stuff was turned on again a few weeks ago.
With preemption disabled (by editing param.h) the system seems to be stable,
but somewhat sluggish (a simple bzip2 compress operation can generate a load
average of 10+).
How would I go about debugging this? Any hints would be appreciated. I do
have KDB/DDB and debug symbols compiled in, but the machine is a production
machine so I cannot afford long debugging sessions unfortunately.
Attached is the dmesg.boot and kernel config file. Below are some settings
that might be interesting from other files:
/etc/sysctl.conf
----------------
kern.ipc.maxsockbuf=524288
kern.ipc.somaxconn=1024
kern.maxfiles=16384
kern.polling.enable=1
kern.polling.idle_poll=0
kern.polling.burst_max=200
kern.polling.each_burst=25
kern.polling.poll_in_trap=1
net.inet.tcp.sendspace=262144
net.inet.tcp.recvspace=262144
net.inet.tcp.rfc3390=1
net.inet.tcp.inflight_enable=1
net.inet.tcp.inflight_min=6144
net.inet.tcp.inflight_debug=0
net.inet.tcp.sack.enable=1
net.inet.ip.intr_queue_maxlen=500
/boot/loader.conf
-----------------
kern.ipc.nmbclusters="16384"
hw.apic.mixed_mode=0
hw.intr_storm_threshold=5000
/etc/make.conf
--------------
CFLAGS= -O2 -pipe -fno-builtin
COPTFLAGS= -O2 -pipe -fno-builtin
CPUTYPE?=athlon-xp
/Daniel Eriksson
[-- Attachment #2 --]
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 5.2-CURRENT #0: Sun Jul 18 09:29:39 CEST 2004
daniel@fortify.xxx.xxx:/usr/obj/usr/src/sys/FORTIFY
WARNING: Kernel preemption is disabled, expect reduced performance.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(TM) XP 2500+ (1999.78-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=0xc0400000<AMIE,DSP,3DNow!>
real memory = 1342156800 (1279 MB)
avail memory = 1304948736 (1244 MB)
ACPI APIC Table: <ASUS A7V600-X>
ioapic0: Changing APIC ID to 2
ioapic0 <Version 0.3> irqs 0-23 on motherboard
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <ASUS A7V600-X> on motherboard
acpi0: [GIANT-LOCKED]
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <32-bit timer at 3.579545MHz> port 0xe408-0xe40b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <VIA 8377 (Apollo KT400/KT400A/KT600) host to PCI bridge> mem 0xf8000000-0xfbffffff 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 0.0 (no driver attached)
atapci0: <HighPoint HPT374 (channel 0+1) UDMA133 controller> port 0xb400-0xb4ff,0xb800-0xb803,0xd000-0xd007,0xd400-0xd403,0xd800-0xd807 irq 16 at device 10.0 on pci0
ata2: at 0xd800 on atapci0
ata3: at 0xd000 on atapci0
atapci1: <HighPoint HPT374 (channel 2+3) UDMA133 controller> port 0x9800-0x98ff,0xa000-0xa003,0xa400-0xa407,0xa800-0xa803,0xb000-0xb007 irq 16 at device 10.1 on pci0
ata4: at 0xb000 on atapci1
ata5: at 0xa400 on atapci1
ahc0: <Adaptec 29160 Ultra160 SCSI adapter> port 0x9400-0x94ff mem 0xed800000-0xed800fff irq 19 at device 12.0 on pci0
ahc0: [GIANT-LOCKED]
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
atapci2: <HighPoint HPT374 (channel 0+1) UDMA133 controller> port 0x7800-0x78ff,0x8000-0x8003,0x8400-0x8407,0x8800-0x8803,0x9000-0x9007 irq 17 at device 14.0 on pci0
ata6: at 0x9000 on atapci2
ata7: at 0x8400 on atapci2
atapci3: <HighPoint HPT374 (channel 2+3) UDMA133 controller> port 0x6000-0x60ff,0x6400-0x6403,0x6800-0x6807,0x7000-0x7003,0x7400-0x7407 irq 17 at device 14.1 on pci0
ata8: at 0x7400 on atapci3
ata9: at 0x6800 on atapci3
atapci4: <VIA 6420 SATA150 controller> port 0x4000-0x40ff,0x4400-0x440f,0x4800-0x4803,0x5000-0x5007,0x5400-0x5403,0x5800-0x5807 irq 20 at device 15.0 on pci0
ata10: at 0x5800 on atapci4
ata11: at 0x5000 on atapci4
atapci5: <VIA 8237 UDMA133 controller> port 0x3800-0x380f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 irq 20 at device 15.1 on pci0
ata0: at 0x1f0 irq 14 on atapci5
ata1: at 0x170 irq 15 on atapci5
uhci0: <VIA 83C572 USB controller> port 0x3400-0x341f irq 21 at device 16.0 on pci0
uhci0: [GIANT-LOCKED]
usb0: <VIA 83C572 USB controller> on uhci0
usb0: USB revision 1.0
uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1: <VIA 83C572 USB controller> port 0x3000-0x301f irq 21 at device 16.1 on pci0
uhci1: [GIANT-LOCKED]
usb1: <VIA 83C572 USB controller> on uhci1
usb1: USB revision 1.0
uhub1: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2: <VIA 83C572 USB controller> port 0x2800-0x281f irq 21 at device 16.2 on pci0
uhci2: [GIANT-LOCKED]
usb2: <VIA 83C572 USB controller> on uhci2
usb2: USB revision 1.0
uhub2: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
uhci3: <VIA 83C572 USB controller> port 0x2400-0x241f irq 21 at device 16.3 on pci0
uhci3: [GIANT-LOCKED]
usb3: <VIA 83C572 USB controller> on uhci3
usb3: USB revision 1.0
uhub3: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
ehci0: <EHCI (generic) USB 2.0 controller> mem 0xed000000-0xed0000ff irq 21 at device 16.4 on pci0
ehci0: [GIANT-LOCKED]
ehci_pci_attach: companion usb0
ehci_pci_attach: companion usb1
ehci_pci_attach: companion usb2
ehci_pci_attach: companion usb3
usb4: EHCI version 1.0
usb4: companion controllers, 2 ports each: usb0 usb1 usb2 usb3
usb4: <EHCI (generic) USB 2.0 controller> on ehci0
usb4: USB revision 2.0
uhub4: (0x1106) EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub4: 8 ports with 8 removable, self powered
isab0: <PCI-ISA bridge> at device 17.0 on pci0
isa0: <ISA bus> on isab0
vr0: <VIA VT6102 Rhine II 10/100BaseTX> port 0x2000-0x20ff mem 0xec800000-0xec8000ff irq 23 at device 18.0 on pci0
miibus0: <MII bus> on vr0
rlphy0: <RTL8201L 10/100 media interface> on miibus0
rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
vr0: Ethernet address: 00:0e:a6:1f:29:1e
vr0: [GIANT-LOCKED]
re0: <RealTek 8110S Single-chip Gigabit Ethernet> port 0x1800-0x18ff mem 0xec000000-0xec0000ff irq 18 at device 19.0 on pci0
miibus1: <MII bus> on re0
rgephy0: <RTL8169S/8110S media interface> on miibus1
rgephy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX, 1000baseTX-FDX, auto
re0: Ethernet address: 00:50:fc:f8:c6:81
re0: [GIANT-LOCKED]
fdc0: <floppy drive controller> port 0x3f7,0x3f2-0x3f5 irq 6 drq 2 on acpi0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0 port 0x3f8-0x3ff irq 4 on acpi0
sio0: type 16550A
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
orm0: <ISA Option ROM> at iomem 0xc0000-0xcafff on isa0
pmtimer0 on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 1999783309 Hz quality 800
Timecounters tick every 1.000 msec
ipfw2 initialized, divert enabled, rule-based forwarding enabled, default to accept, logging unlimited
ad0: 114473MB <ST3120022A> [232581/16/63] at ata0-master UDMA100
ad1: 114473MB <ST3120022A> [232581/16/63] at ata0-slave UDMA100
ad2: 117800MB <IC35L120AVV207-0> [239340/16/63] at ata1-master UDMA100
ad3: 117800MB <IC35L120AVV207-0> [239340/16/63] at ata1-slave UDMA100
ad4: 238475MB <WDC WD2500JB-00FUA0> [484521/16/63] at ata2-master UDMA100
ad5: 238475MB <WDC WD2500JB-00FUA0> [484521/16/63] at ata2-slave UDMA100
ad6: 239372MB <Maxtor 4A250J0> [486344/16/63] at ata3-master UDMA133
ad7: 239372MB <Maxtor 5A250J0> [486344/16/63] at ata3-slave UDMA133
ad8: 194481MB <Maxtor 6Y200P0> [395136/16/63] at ata4-master UDMA133
ad9: 194481MB <Maxtor 6Y200P0> [395136/16/63] at ata4-slave UDMA133
ad10: 194481MB <Maxtor 6Y200P0> [395136/16/63] at ata5-master UDMA133
ad11: 239372MB <Maxtor 7Y250P0> [486344/16/63] at ata5-slave UDMA133
ad12: 117800MB <IC35L120AVV207-0> [239340/16/63] at ata6-master UDMA100
ad13: 117800MB <HDS722512VLAT20> [239340/16/63] at ata6-slave UDMA100
ad14: 117246MB <Maxtor 6Y120L0> [238216/16/63] at ata7-master UDMA133
ad15: 117246MB <Maxtor 6Y120L0> [238216/16/63] at ata7-slave UDMA133
ad16: 114473MB <WDC WD1200JB-00DUA3> [232581/16/63] at ata8-master UDMA100
ad18: 26059MB <Maxtor 92732U8> [52946/16/63] at ata9-master UDMA66
ad20: 239372MB <Maxtor 7Y250M0> [486344/16/63] at ata10-master SATA150
ad22: 238475MB <WDC WD2500JD-00FYB0> [484521/16/63] at ata11-master SATA150
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
Waiting 5 seconds for SCSI devices to settle
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)
Mounting root from ufs:/dev/ad0s1a
[-- Attachment #3 --]
machine i386
cpu I686_CPU
options CPU_ENABLE_SSE
ident FORTIFY
# Options for the firewall and NAT functionality
options IPFIREWALL
options IPDIVERT
options IPFIREWALL_DEFAULT_TO_ACCEPT
options IPFIREWALL_VERBOSE
# To statically compile in device wiring instead of /boot/device.hints
#hints "GENERIC.hints" # Default places to look for devices.
makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
#options SCHED_ULE # ULE scheduler
options SCHED_4BSD # 4BSD scheduler
options INET # InterNETworking
options INET6 # IPv6 communications protocols
options FFS # Berkeley Fast Filesystem
options SOFTUPDATES # Enable FFS soft updates support
options UFS_ACL # Support for access control lists
options UFS_DIRHASH # Improve performance on big directories
options MD_ROOT # MD is a potential root device
options NFSCLIENT # Network Filesystem Client
options NFSSERVER # Network Filesystem Server
options NFS_ROOT # NFS usable as /, requires NFSCLIENT
options MSDOSFS # MSDOS Filesystem
options CD9660 # ISO 9660 Filesystem
options PROCFS # Process filesystem (requires PSEUDOFS)
options PSEUDOFS # Pseudo-filesystem framework
options GEOM_GPT # GUID Partition Tables.
options COMPAT_43 # Compatible with BSD 4.3 [KEEP THIS!]
options COMPAT_FREEBSD4 # Compatible with FreeBSD4
options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
#options KTRACE # ktrace(1) support
options SYSVSHM # SYSV-style shared memory
options SYSVMSG # SYSV-style message queues
options SYSVSEM # SYSV-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
#options AHC_REG_PRETTY_PRINT # Print register bitfields in debug output. Adds ~128k to driver.
#options AHD_REG_PRETTY_PRINT # Print register bitfields in debug output. Adds ~215k to driver.
#options PFIL_HOOKS # pfil(9) framework
# dakrer
options DEVICE_POLLING
options DUMMYNET
options HZ=2000
options ZERO_COPY_SOCKETS # Turn on zero copy send code
# The aic7xxx driver will attempt to use memory mapped I/O for all PCI
# controllers that have it configured only if this option is set. Unfortunately,
# this doesn't work on some motherboards, which prevents it from being the
# default.
options AHC_ALLOW_MEMIO
# encrypted filesystem
options GEOM_BDE
# netgraph(4). Enable the base netgraph code with the NETGRAPH option.
# Individual node types can be enabled with the corresponding option
# listed below; however, this is not strictly necessary as netgraph
# will automatically load the corresponding KLD module if the node type
# is not already compiled into the kernel. Each type below has a
# corresponding man page, e.g., ng_async(8).
options NETGRAPH #netgraph(4) system
#options NETGRAPH_ASYNC
#options NETGRAPH_ATMLLC
#options NETGRAPH_ATM_ATMPIF
#options NETGRAPH_BLUETOOTH # ng_bluetooth(4)
#options NETGRAPH_BLUETOOTH_BT3C # ng_bt3c(4)
#options NETGRAPH_BLUETOOTH_H4 # ng_h4(4)
#options NETGRAPH_BLUETOOTH_HCI # ng_hci(4)
#options NETGRAPH_BLUETOOTH_L2CAP # ng_l2cap(4)
#options NETGRAPH_BLUETOOTH_SOCKET # ng_btsocket(4)
#options NETGRAPH_BLUETOOTH_UBT # ng_ubt(4)
#options NETGRAPH_BLUETOOTH_UBTBCMFW # ubtbcmfw(4)
#options NETGRAPH_BPF
#options NETGRAPH_BRIDGE
#options NETGRAPH_CISCO
#options NETGRAPH_ECHO
#options NETGRAPH_ETHER
#options NETGRAPH_FRAME_RELAY
#options NETGRAPH_GIF
#options NETGRAPH_GIF_DEMUX
#options NETGRAPH_HOLE
#options NETGRAPH_IFACE
#options NETGRAPH_IP_INPUT
#options NETGRAPH_KSOCKET
#options NETGRAPH_L2TP
#options NETGRAPH_LMI
## MPPC compression requires proprietary files (not included)
##options NETGRAPH_MPPC_COMPRESSION
#options NETGRAPH_MPPC_ENCRYPTION
#options NETGRAPH_ONE2MANY
#options NETGRAPH_PPP
#options NETGRAPH_PPPOE
#options NETGRAPH_PPTPGRE
#options NETGRAPH_RFC1490
#options NETGRAPH_SOCKET
#options NETGRAPH_SPLIT
#options NETGRAPH_SPPP
#options NETGRAPH_TEE
#options NETGRAPH_TTY
#options NETGRAPH_UI
#options NETGRAPH_VJC
# Debugging for use in -current
options KDB # Enable the kernel debugger
options DDB # Enable the kernel debugger
#options INVARIANTS # Enable calls of extra sanity checking
#options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
#options WITNESS # Enable checks to detect deadlocks and cycles
#options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
# To make an SMP kernel, the next two are needed
#options SMP # Symmetric MultiProcessor Kernel
device apic # I/O APIC
#options NO_MIXED_MODE # Don't penalize working chipsets
# Bus support. Do not remove isa, even if you have no isa slots
device isa
#device eisa
device pci
# Floppy drives
device fdc
# ATA and ATAPI devices
device ata
device atadisk # ATA disk drives
device ataraid # ATA RAID drives
device atapicd # ATAPI CDROM drives
device atapifd # ATAPI floppy drives
device atapist # ATAPI tape drives
options ATA_STATIC_ID # Static device numbering
# SCSI Controllers
#device ahb # EISA AHA1742 family
device ahc # AHA2940 and onboard AIC7xxx devices
device ahd # AHA39320/29320 and onboard AIC79xx devices
#device amd # AMD 53C974 (Tekram DC-390(T))
#device isp # Qlogic family
#device mpt # LSI-Logic MPT-Fusion
##device ncr # NCR/Symbios Logic
#device sym # NCR/Symbios Logic (newer chipsets + those of `ncr')
#device trm # Tekram DC395U/UW/F DC315U adapters
#device adv # Advansys SCSI adapters
#device adw # Advansys wide SCSI adapters
#device aha # Adaptec 154x SCSI adapters
#device aic # Adaptec 15[012]x SCSI adapters, AIC-6[23]60.
#device bt # Buslogic/Mylex MultiMaster SCSI adapters
#device ncv # NCR 53C500
#device nsp # Workbit Ninja SCSI-3
#device stg # TMC 18C30/18C50
# SCSI peripherals
device scbus # SCSI bus (required for SCSI)
device ch # SCSI media changers
device da # Direct Access (disks)
device sa # Sequential Access (tape etc)
device cd # CD
device pass # Passthrough device (direct SCSI access)
device ses # SCSI Environmental Services (and SAF-TE)
# RAID controllers interfaced to the SCSI subsystem
#device amr # AMI MegaRAID
#device asr # DPT SmartRAID V, VI and Adaptec SCSI RAID
#device ciss # Compaq Smart RAID 5*
#device dpt # DPT Smartcache III, IV - See NOTES for options
#device iir # Intel Integrated RAID
#device ips # IBM (Adaptec) ServeRAID
#device mly # Mylex AcceleRAID/eXtremeRAID
#device twa # 3ware 9000 series PATA/SATA RAID
# RAID controllers
#device aac # Adaptec FSA RAID
#device aacp # SCSI passthrough for aac (requires CAM)
#device ida # Compaq Smart RAID
#device mlx # Mylex DAC960 family
#device pst # Promise Supertrak SX6000
#device twe # 3ware ATA RAID
# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc # AT keyboard controller
device atkbd # AT keyboard
device psm # PS/2 mouse
device vga # VGA video card driver
device splash # Splash screen and screen saver support
# syscons is the default console driver, resembling an SCO console
device sc
# Enable this for the pcvt (VT220 compatible) console driver
#device vt
#options XSERVER # support for X server on a vt console
#options FAT_CURSOR # start with block cursor
device agp # support several AGP chipsets
# Floating point support - do not disable.
device npx
# Power management support (see NOTES for more options)
#device apm
# Add suspend/resume support for the i8254.
device pmtimer
# PCCARD (PCMCIA) support
# PCMCIA and cardbus bridge support
#device cbb # cardbus (yenta) bridge
##device pcic # ExCA ISA and PCI bridges
#device pccard # PC Card (16-bit) bus
#device cardbus # CardBus (32-bit) bus
# Serial (COM) ports
device sio # 8250, 16[45]50 based serial ports
# Parallel port
#device ppc
#device ppbus # Parallel port bus (required)
#device lpt # Printer
#device plip # TCP/IP over parallel
#device ppi # Parallel port interface device
##device vpo # Requires scbus and da
# If you've got a "dumb" serial or parallel PCI card that is
# supported by the puc(4) glue driver, uncomment the following
# line to enable it (connects to the sio and/or ppc drivers):
#device puc
# PCI Ethernet NICs.
#device de # DEC/Intel DC21x4x (``Tulip'')
device em # Intel PRO/1000 adapter Gigabit Ethernet Card
#device txp # 3Com 3cR990 (``Typhoon'')
#device vx # 3Com 3c590, 3c595 (``Vortex'')
# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device miibus # MII bus support
#device bfe # Broadcom BCM440x 10/100 Ethernet
device bge # Broadcom BCM570xx Gigabit Ethernet
#device dc # DEC/Intel 21143 and various workalikes
#device fxp # Intel EtherExpress PRO/100B (82557, 82558)
#device pcn # AMD Am79C97x PCI 10/100 (precedence over 'lnc')
device re # RealTek 8139C+/8169/8169S/8110S
device rl # RealTek 8129/8139
#device sf # Adaptec AIC-6915 (``Starfire'')
#device sis # Silicon Integrated Systems SiS 900/SiS 7016
#device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
#device ste # Sundance ST201 (D-Link DFE-550TX)
#device ti # Alteon Networks Tigon I/II gigabit Ethernet
#device tl # Texas Instruments ThunderLAN
#device tx # SMC EtherPower II (83c170 ``EPIC'')
device vr # VIA Rhine, Rhine II
#device wb # Winbond W89C840F
device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
# ISA Ethernet NICs. pccard NICs included.
#device cs # Crystal Semiconductor CS89x0 NIC
# 'device ed' requires 'device miibus'
#device ed # NE[12]000, SMC Ultra, 3c503, DS8390 cards
#device ex # Intel EtherExpress Pro/10 and Pro/10+
#device ep # Etherlink III based cards
#device fe # Fujitsu MB8696x based cards
#device ie # EtherExpress 8/16, 3C507, StarLAN 10 etc.
#device lnc # NE2100, NE32-VL Lance Ethernet cards
#device sn # SMC's 9000 series of Ethernet chips
#device xe # Xircom pccard Ethernet
# ISA devices that use the old ISA shims
#device le
# Wireless NIC cards
#device wlan # 802.11 support
#device an # Aironet 4500/4800 802.11 wireless NICs.
#device awi # BayStack 660 and others
#device wi # WaveLAN/Intersil/Symbol 802.11 wireless NICs.
##device wl # Older non 802.11 Wavelan wireless NIC.
# Pseudo devices - the number indicates how many units to allocate.
device random # Entropy device
device loop # Network loopback
device ether # Ethernet support
device sl # Kernel SLIP
device ppp # Kernel PPP
device tun # Packet tunnel.
device pty # Pseudo-ttys (telnet etc)
device md # Memory "disks"
device gif # IPv6 and IPv4 tunneling
device faith # IPv6-to-IPv4 relaying (translation)
# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
device bpf # Berkeley packet filter
# USB support
device uhci # UHCI PCI->USB interface
device ohci # OHCI PCI->USB interface
device ehci # EHCI controller
device usb # USB Bus (required)
#device udbp # USB Double Bulk Pipe devices
device ugen # Generic
device uhid # "Human Interface Devices"
device ukbd # Keyboard
device ulpt # Printer
device umass # Disks/Mass storage - Requires scbus and da
device ums # Mouse
device urio # Diamond Rio 500 MP3 player
device uscanner # Scanners
# USB Ethernet, requires mii
device aue # ADMtek USB Ethernet
device axe # ASIX Electronics USB Ethernet
device cue # CATC USB Ethernet
device kue # Kawasaki LSI USB Ethernet
device rue # RealTek RTL8150 USB Ethernet
# FireWire support
#device firewire # FireWire bus code
#device sbp # SCSI over FireWire (Requires scbus and da)
#device fwe # Ethernet over FireWire (non-standard!)
help
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAA0VcX9IoJqUaXPS8MjT1PdsKAAAAQAAAAg2tdUeRFt0KlmWj16YeSrgEAAAAA>