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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>

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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=3D524288
kern.ipc.somaxconn=3D1024
kern.maxfiles=3D16384
kern.polling.enable=3D1
kern.polling.idle_poll=3D0
kern.polling.burst_max=3D200
kern.polling.each_burst=3D25
kern.polling.poll_in_trap=3D1
net.inet.tcp.sendspace=3D262144
net.inet.tcp.recvspace=3D262144
net.inet.tcp.rfc3390=3D1
net.inet.tcp.inflight_enable=3D1
net.inet.tcp.inflight_min=3D6144
net.inet.tcp.inflight_debug=3D0
net.inet.tcp.sack.enable=3D1
net.inet.ip.intr_queue_maxlen=3D500

/boot/loader.conf
-----------------
kern.ipc.nmbclusters=3D"16384"
hw.apic.mixed_mode=3D0
hw.intr_storm_threshold=3D5000

/etc/make.conf
--------------
CFLAGS=3D -O2 -pipe -fno-builtin
COPTFLAGS=3D -O2 -pipe -fno-builtin
CPUTYPE?=3Dathlon-xp


/Daniel Eriksson

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Content-Type: application/octet-stream;
	name="dmesg.boot"
Content-Transfer-Encoding: quoted-printable
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	filename="dmesg.boot"

Copyright (c) 1992-2004 The FreeBSD Project.=0A=
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994=0A=
	The Regents of the University of California. All rights reserved.=0A=
FreeBSD 5.2-CURRENT #0: Sun Jul 18 09:29:39 CEST 2004=0A=
    daniel@fortify.xxx.xxx:/usr/obj/usr/src/sys/FORTIFY=0A=
WARNING: Kernel preemption is disabled, expect reduced performance.=0A=
Timecounter "i8254" frequency 1193182 Hz quality 0=0A=
CPU: AMD Athlon(TM) XP 2500+ (1999.78-MHz 686-class CPU)=0A=
  Origin =3D "AuthenticAMD"  Id =3D 0x6a0  Stepping =3D 0=0A=
  =
Features=3D0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE=
,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>=0A=
  AMD Features=3D0xc0400000<AMIE,DSP,3DNow!>=0A=
real memory  =3D 1342156800 (1279 MB)=0A=
avail memory =3D 1304948736 (1244 MB)=0A=
ACPI APIC Table: <ASUS   A7V600-X>=0A=
ioapic0: Changing APIC ID to 2=0A=
ioapic0 <Version 0.3> irqs 0-23 on motherboard=0A=
npx0: [FAST]=0A=
npx0: <math processor> on motherboard=0A=
npx0: INT 16 interface=0A=
acpi0: <ASUS A7V600-X> on motherboard=0A=
acpi0: [GIANT-LOCKED]=0A=
acpi0: Power Button (fixed)=0A=
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000=0A=
acpi_timer0: <32-bit timer at 3.579545MHz> port 0xe408-0xe40b on acpi0=0A=
cpu0: <ACPI CPU> on acpi0=0A=
acpi_button0: <Power Button> on acpi0=0A=
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0=0A=
pci0: <ACPI PCI bus> on pcib0=0A=
agp0: <VIA 8377 (Apollo KT400/KT400A/KT600) host to PCI bridge> mem =
0xf8000000-0xfbffffff at device 0.0 on pci0=0A=
pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0=0A=
pci1: <ACPI PCI bus> on pcib1=0A=
pci1: <display, VGA> at device 0.0 (no driver attached)=0A=
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=0A=
ata2: at 0xd800 on atapci0=0A=
ata3: at 0xd000 on atapci0=0A=
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=0A=
ata4: at 0xb000 on atapci1=0A=
ata5: at 0xa400 on atapci1=0A=
ahc0: <Adaptec 29160 Ultra160 SCSI adapter> port 0x9400-0x94ff mem =
0xed800000-0xed800fff irq 19 at device 12.0 on pci0=0A=
ahc0: [GIANT-LOCKED]=0A=
aic7892: Ultra160 Wide Channel A, SCSI Id=3D7, 32/253 SCBs=0A=
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=0A=
ata6: at 0x9000 on atapci2=0A=
ata7: at 0x8400 on atapci2=0A=
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=0A=
ata8: at 0x7400 on atapci3=0A=
ata9: at 0x6800 on atapci3=0A=
atapci4: <VIA 6420 SATA150 controller> port =
0x4000-0x40ff,0x4400-0x440f,0x4800-0x4803,0x5000-0x5007,0x5400-0x5403,0x5=
800-0x5807 irq 20 at device 15.0 on pci0=0A=
ata10: at 0x5800 on atapci4=0A=
ata11: at 0x5000 on atapci4=0A=
atapci5: <VIA 8237 UDMA133 controller> port =
0x3800-0x380f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 irq 20 at device 15.1 =
on pci0=0A=
ata0: at 0x1f0 irq 14 on atapci5=0A=
ata1: at 0x170 irq 15 on atapci5=0A=
uhci0: <VIA 83C572 USB controller> port 0x3400-0x341f irq 21 at device =
16.0 on pci0=0A=
uhci0: [GIANT-LOCKED]=0A=
usb0: <VIA 83C572 USB controller> on uhci0=0A=
usb0: USB revision 1.0=0A=
uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1=0A=
uhub0: 2 ports with 2 removable, self powered=0A=
uhci1: <VIA 83C572 USB controller> port 0x3000-0x301f irq 21 at device =
16.1 on pci0=0A=
uhci1: [GIANT-LOCKED]=0A=
usb1: <VIA 83C572 USB controller> on uhci1=0A=
usb1: USB revision 1.0=0A=
uhub1: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1=0A=
uhub1: 2 ports with 2 removable, self powered=0A=
uhci2: <VIA 83C572 USB controller> port 0x2800-0x281f irq 21 at device =
16.2 on pci0=0A=
uhci2: [GIANT-LOCKED]=0A=
usb2: <VIA 83C572 USB controller> on uhci2=0A=
usb2: USB revision 1.0=0A=
uhub2: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1=0A=
uhub2: 2 ports with 2 removable, self powered=0A=
uhci3: <VIA 83C572 USB controller> port 0x2400-0x241f irq 21 at device =
16.3 on pci0=0A=
uhci3: [GIANT-LOCKED]=0A=
usb3: <VIA 83C572 USB controller> on uhci3=0A=
usb3: USB revision 1.0=0A=
uhub3: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1=0A=
uhub3: 2 ports with 2 removable, self powered=0A=
ehci0: <EHCI (generic) USB 2.0 controller> mem 0xed000000-0xed0000ff irq =
21 at device 16.4 on pci0=0A=
ehci0: [GIANT-LOCKED]=0A=
ehci_pci_attach: companion usb0=0A=
ehci_pci_attach: companion usb1=0A=
ehci_pci_attach: companion usb2=0A=
ehci_pci_attach: companion usb3=0A=
usb4: EHCI version 1.0=0A=
usb4: companion controllers, 2 ports each: usb0 usb1 usb2 usb3=0A=
usb4: <EHCI (generic) USB 2.0 controller> on ehci0=0A=
usb4: USB revision 2.0=0A=
uhub4: (0x1106) EHCI root hub, class 9/0, rev 2.00/1.00, addr 1=0A=
uhub4: 8 ports with 8 removable, self powered=0A=
isab0: <PCI-ISA bridge> at device 17.0 on pci0=0A=
isa0: <ISA bus> on isab0=0A=
vr0: <VIA VT6102 Rhine II 10/100BaseTX> port 0x2000-0x20ff mem =
0xec800000-0xec8000ff irq 23 at device 18.0 on pci0=0A=
miibus0: <MII bus> on vr0=0A=
rlphy0: <RTL8201L 10/100 media interface> on miibus0=0A=
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto=0A=
vr0: Ethernet address: 00:0e:a6:1f:29:1e=0A=
vr0: [GIANT-LOCKED]=0A=
re0: <RealTek 8110S Single-chip Gigabit Ethernet> port 0x1800-0x18ff mem =
0xec000000-0xec0000ff irq 18 at device 19.0 on pci0=0A=
miibus1: <MII bus> on re0=0A=
rgephy0: <RTL8169S/8110S media interface> on miibus1=0A=
rgephy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX, =
1000baseTX-FDX, auto=0A=
re0: Ethernet address: 00:50:fc:f8:c6:81=0A=
re0: [GIANT-LOCKED]=0A=
fdc0: <floppy drive controller> port 0x3f7,0x3f2-0x3f5 irq 6 drq 2 on =
acpi0=0A=
fdc0: FIFO enabled, 8 bytes threshold=0A=
fd0: <1440-KB 3.5" drive> on fdc0 drive 0=0A=
sio0: configured irq 4 not in bitmap of probed irqs 0=0A=
sio0: port may not be enabled=0A=
sio0 port 0x3f8-0x3ff irq 4 on acpi0=0A=
sio0: type 16550A=0A=
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0=0A=
atkbd0: <AT Keyboard> irq 1 on atkbdc0=0A=
kbd0 at atkbd0=0A=
atkbd0: [GIANT-LOCKED]=0A=
orm0: <ISA Option ROM> at iomem 0xc0000-0xcafff on isa0=0A=
pmtimer0 on isa0=0A=
sc0: <System console> at flags 0x100 on isa0=0A=
sc0: VGA <16 virtual consoles, flags=3D0x300>=0A=
sio1: configured irq 3 not in bitmap of probed irqs 0=0A=
sio1: port may not be enabled=0A=
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0=0A=
Timecounter "TSC" frequency 1999783309 Hz quality 800=0A=
Timecounters tick every 1.000 msec=0A=
ipfw2 initialized, divert enabled, rule-based forwarding enabled, =
default to accept, logging unlimited=0A=
ad0: 114473MB <ST3120022A> [232581/16/63] at ata0-master UDMA100=0A=
ad1: 114473MB <ST3120022A> [232581/16/63] at ata0-slave UDMA100=0A=
ad2: 117800MB <IC35L120AVV207-0> [239340/16/63] at ata1-master UDMA100=0A=
ad3: 117800MB <IC35L120AVV207-0> [239340/16/63] at ata1-slave UDMA100=0A=
ad4: 238475MB <WDC WD2500JB-00FUA0> [484521/16/63] at ata2-master UDMA100=0A=
ad5: 238475MB <WDC WD2500JB-00FUA0> [484521/16/63] at ata2-slave UDMA100=0A=
ad6: 239372MB <Maxtor 4A250J0> [486344/16/63] at ata3-master UDMA133=0A=
ad7: 239372MB <Maxtor 5A250J0> [486344/16/63] at ata3-slave UDMA133=0A=
ad8: 194481MB <Maxtor 6Y200P0> [395136/16/63] at ata4-master UDMA133=0A=
ad9: 194481MB <Maxtor 6Y200P0> [395136/16/63] at ata4-slave UDMA133=0A=
ad10: 194481MB <Maxtor 6Y200P0> [395136/16/63] at ata5-master UDMA133=0A=
ad11: 239372MB <Maxtor 7Y250P0> [486344/16/63] at ata5-slave UDMA133=0A=
ad12: 117800MB <IC35L120AVV207-0> [239340/16/63] at ata6-master UDMA100=0A=
ad13: 117800MB <HDS722512VLAT20> [239340/16/63] at ata6-slave UDMA100=0A=
ad14: 117246MB <Maxtor 6Y120L0> [238216/16/63] at ata7-master UDMA133=0A=
ad15: 117246MB <Maxtor 6Y120L0> [238216/16/63] at ata7-slave UDMA133=0A=
ad16: 114473MB <WDC WD1200JB-00DUA3> [232581/16/63] at ata8-master =
UDMA100=0A=
ad18: 26059MB <Maxtor 92732U8> [52946/16/63] at ata9-master UDMA66=0A=
ad20: 239372MB <Maxtor 7Y250M0> [486344/16/63] at ata10-master SATA150=0A=
ad22: 238475MB <WDC WD2500JD-00FYB0> [484521/16/63] at ata11-master =
SATA150=0A=
ar0: 476950MB <ATA RAID0 array> [60802/255/63] status: READY subdisks:=0A=
 disk0 READY on ad4 at ata2-master=0A=
 disk1 READY on ad5 at ata2-slave=0A=
ar1: 478744MB <ATA RAID0 array> [61031/255/63] status: READY subdisks:=0A=
 disk0 READY on ad6 at ata3-master=0A=
 disk1 READY on ad7 at ata3-slave=0A=
ar2: 388962MB <ATA RAID0 array> [49585/255/63] status: READY subdisks:=0A=
 disk0 READY on ad9 at ata4-slave=0A=
 disk1 READY on ad8 at ata4-master=0A=
Waiting 5 seconds for SCSI devices to settle=0A=
sa0 at ahc0 bus 0 target 5 lun 0=0A=
sa0: <Seagate STT20000N 6A51> Removable Sequential Access SCSI-2 device =0A=
sa0: 10.000MB/s transfers (10.000MHz, offset 15)=0A=
da0 at ahc0 bus 0 target 0 lun 0=0A=
da0: <QUANTUM ATLAS 10K 9WLS UCH0> Fixed Direct Access SCSI-3 device =0A=
da0: 40.000MB/s transfers (20.000MHz, offset 31, 16bit), Tagged Queueing =
Enabled=0A=
da0: 8759MB (17938986 512 byte sectors: 255H 63S/T 1116C)=0A=
da1 at ahc0 bus 0 target 1 lun 0=0A=
da1: <QUANTUM ATLAS 10K 9WLS UCH0> Fixed Direct Access SCSI-3 device =0A=
da1: 40.000MB/s transfers (20.000MHz, offset 31, 16bit), Tagged Queueing =
Enabled=0A=
da1: 8759MB (17938986 512 byte sectors: 255H 63S/T 1116C)=0A=
da2 at ahc0 bus 0 target 10 lun 0=0A=
da2: <IBM DDYS-T36950N S93E> Fixed Direct Access SCSI-3 device =0A=
da2: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged =
Queueing Enabled=0A=
da2: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C)=0A=
da3 at ahc0 bus 0 target 11 lun 0=0A=
da3: <IBM IC35L036UWD210-0 S5CQ> Fixed Direct Access SCSI-3 device =0A=
da3: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged =
Queueing Enabled=0A=
da3: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C)=0A=
da4 at ahc0 bus 0 target 12 lun 0=0A=
da4: <IBM DDYS-T36950N S93E> Fixed Direct Access SCSI-3 device =0A=
da4: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged =
Queueing Enabled=0A=
da4: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C)=0A=
da5 at ahc0 bus 0 target 13 lun 0=0A=
da5: <IBM DDYS-T36950N S93E> Fixed Direct Access SCSI-3 device =0A=
da5: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged =
Queueing Enabled=0A=
da5: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C)=0A=
Mounting root from ufs:/dev/ad0s1a=0A=

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	name="FORTIFY"
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	filename="FORTIFY"

=0A=
machine		i386=0A=
cpu		I686_CPU=0A=
options		CPU_ENABLE_SSE=0A=
ident		FORTIFY=0A=
=0A=
# Options for the firewall and NAT functionality=0A=
options         IPFIREWALL=0A=
options         IPDIVERT=0A=
options         IPFIREWALL_DEFAULT_TO_ACCEPT=0A=
options         IPFIREWALL_VERBOSE=0A=
=0A=
=0A=
# To statically compile in device wiring instead of /boot/device.hints=0A=
#hints		"GENERIC.hints"		# Default places to look for devices.=0A=
=0A=
makeoptions	DEBUG=3D-g		# Build kernel with gdb(1) debug symbols=0A=
=0A=
#options 	SCHED_ULE		# ULE scheduler=0A=
options 	SCHED_4BSD		# 4BSD scheduler=0A=
options 	INET			# InterNETworking=0A=
options 	INET6			# IPv6 communications protocols=0A=
options 	FFS			# Berkeley Fast Filesystem=0A=
options 	SOFTUPDATES		# Enable FFS soft updates support=0A=
options 	UFS_ACL			# Support for access control lists=0A=
options 	UFS_DIRHASH		# Improve performance on big directories=0A=
options 	MD_ROOT			# MD is a potential root device=0A=
options 	NFSCLIENT		# Network Filesystem Client=0A=
options 	NFSSERVER		# Network Filesystem Server=0A=
options 	NFS_ROOT		# NFS usable as /, requires NFSCLIENT=0A=
options 	MSDOSFS			# MSDOS Filesystem=0A=
options 	CD9660			# ISO 9660 Filesystem=0A=
options 	PROCFS			# Process filesystem (requires PSEUDOFS)=0A=
options 	PSEUDOFS		# Pseudo-filesystem framework=0A=
options 	GEOM_GPT		# GUID Partition Tables.=0A=
options 	COMPAT_43		# Compatible with BSD 4.3 [KEEP THIS!]=0A=
options 	COMPAT_FREEBSD4		# Compatible with FreeBSD4=0A=
options 	SCSI_DELAY=3D5000		# Delay (in ms) before probing SCSI=0A=
#options 	KTRACE			# ktrace(1) support=0A=
options 	SYSVSHM			# SYSV-style shared memory=0A=
options 	SYSVMSG			# SYSV-style message queues=0A=
options 	SYSVSEM			# SYSV-style semaphores=0A=
options 	_KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time =
extensions=0A=
options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev=0A=
#options 	AHC_REG_PRETTY_PRINT	# Print register bitfields in debug =
output.  Adds ~128k to driver.=0A=
#options 	AHD_REG_PRETTY_PRINT	# Print register bitfields in debug =
output.  Adds ~215k to driver.=0A=
#options 	PFIL_HOOKS		# pfil(9) framework=0A=
=0A=
=0A=
# dakrer=0A=
options		DEVICE_POLLING=0A=
options 	DUMMYNET=0A=
options		HZ=3D2000=0A=
options		ZERO_COPY_SOCKETS        # Turn on zero copy send code=0A=
=0A=
# The aic7xxx driver will attempt to use memory mapped I/O for all PCI=0A=
# controllers that have it configured only if this option is set. =
Unfortunately,=0A=
# this doesn't work on some motherboards, which prevents it from being =
the=0A=
# default.=0A=
options         AHC_ALLOW_MEMIO=0A=
=0A=
=0A=
# encrypted filesystem=0A=
options		GEOM_BDE=0A=
=0A=
# netgraph(4). Enable the base netgraph code with the NETGRAPH option.=0A=
# Individual node types can be enabled with the corresponding option=0A=
# listed below; however, this is not strictly necessary as netgraph=0A=
# will automatically load the corresponding KLD module if the node type=0A=
# is not already compiled into the kernel. Each type below has a=0A=
# corresponding man page, e.g., ng_async(8).=0A=
options 	NETGRAPH                #netgraph(4) system=0A=
#options         NETGRAPH_ASYNC=0A=
#options         NETGRAPH_ATMLLC=0A=
#options         NETGRAPH_ATM_ATMPIF=0A=
#options         NETGRAPH_BLUETOOTH              # ng_bluetooth(4)=0A=
#options         NETGRAPH_BLUETOOTH_BT3C         # ng_bt3c(4)=0A=
#options         NETGRAPH_BLUETOOTH_H4           # ng_h4(4)=0A=
#options         NETGRAPH_BLUETOOTH_HCI          # ng_hci(4)=0A=
#options         NETGRAPH_BLUETOOTH_L2CAP        # ng_l2cap(4)=0A=
#options         NETGRAPH_BLUETOOTH_SOCKET       # ng_btsocket(4)=0A=
#options         NETGRAPH_BLUETOOTH_UBT          # ng_ubt(4)=0A=
#options         NETGRAPH_BLUETOOTH_UBTBCMFW     # ubtbcmfw(4)=0A=
#options         NETGRAPH_BPF=0A=
#options         NETGRAPH_BRIDGE=0A=
#options         NETGRAPH_CISCO=0A=
#options         NETGRAPH_ECHO=0A=
#options         NETGRAPH_ETHER=0A=
#options         NETGRAPH_FRAME_RELAY=0A=
#options         NETGRAPH_GIF=0A=
#options         NETGRAPH_GIF_DEMUX=0A=
#options         NETGRAPH_HOLE=0A=
#options         NETGRAPH_IFACE=0A=
#options         NETGRAPH_IP_INPUT=0A=
#options         NETGRAPH_KSOCKET=0A=
#options         NETGRAPH_L2TP=0A=
#options         NETGRAPH_LMI=0A=
## MPPC compression requires proprietary files (not included)=0A=
##options        NETGRAPH_MPPC_COMPRESSION=0A=
#options         NETGRAPH_MPPC_ENCRYPTION=0A=
#options         NETGRAPH_ONE2MANY=0A=
#options         NETGRAPH_PPP=0A=
#options         NETGRAPH_PPPOE=0A=
#options         NETGRAPH_PPTPGRE=0A=
#options         NETGRAPH_RFC1490=0A=
#options         NETGRAPH_SOCKET=0A=
#options         NETGRAPH_SPLIT=0A=
#options         NETGRAPH_SPPP=0A=
#options         NETGRAPH_TEE=0A=
#options         NETGRAPH_TTY=0A=
#options         NETGRAPH_UI=0A=
#options         NETGRAPH_VJC=0A=
=0A=
=0A=
# Debugging for use in -current=0A=
options 	KDB			# Enable the kernel debugger=0A=
options 	DDB			# Enable the kernel debugger=0A=
#options 	INVARIANTS		# Enable calls of extra sanity checking=0A=
#options 	INVARIANT_SUPPORT	# Extra sanity checks of internal =
structures, required by INVARIANTS=0A=
#options 	WITNESS			# Enable checks to detect deadlocks and cycles=0A=
#options 	WITNESS_SKIPSPIN	# Don't run witness on spinlocks for speed=0A=
=0A=
# To make an SMP kernel, the next two are needed=0A=
#options 	SMP			# Symmetric MultiProcessor Kernel=0A=
device		apic			# I/O APIC=0A=
#options 	NO_MIXED_MODE		# Don't penalize working chipsets=0A=
=0A=
=0A=
# Bus support.  Do not remove isa, even if you have no isa slots=0A=
device		isa=0A=
#device		eisa=0A=
device		pci=0A=
=0A=
# Floppy drives=0A=
device		fdc=0A=
=0A=
# ATA and ATAPI devices=0A=
device		ata=0A=
device		atadisk		# ATA disk drives=0A=
device		ataraid		# ATA RAID drives=0A=
device		atapicd		# ATAPI CDROM drives=0A=
device		atapifd		# ATAPI floppy drives=0A=
device		atapist		# ATAPI tape drives=0A=
options 	ATA_STATIC_ID	# Static device numbering=0A=
=0A=
# SCSI Controllers=0A=
#device		ahb		# EISA AHA1742 family=0A=
device		ahc		# AHA2940 and onboard AIC7xxx devices=0A=
device		ahd		# AHA39320/29320 and onboard AIC79xx devices=0A=
#device		amd		# AMD 53C974 (Tekram DC-390(T))=0A=
#device		isp		# Qlogic family=0A=
#device		mpt		# LSI-Logic MPT-Fusion=0A=
##device 	ncr		# NCR/Symbios Logic=0A=
#device		sym		# NCR/Symbios Logic (newer chipsets + those of `ncr')=0A=
#device		trm		# Tekram DC395U/UW/F DC315U adapters=0A=
=0A=
#device		adv		# Advansys SCSI adapters=0A=
#device		adw		# Advansys wide SCSI adapters=0A=
#device		aha		# Adaptec 154x SCSI adapters=0A=
#device		aic		# Adaptec 15[012]x SCSI adapters, AIC-6[23]60.=0A=
#device		bt		# Buslogic/Mylex MultiMaster SCSI adapters=0A=
=0A=
#device		ncv		# NCR 53C500=0A=
#device		nsp		# Workbit Ninja SCSI-3=0A=
#device		stg		# TMC 18C30/18C50=0A=
=0A=
# SCSI peripherals=0A=
device		scbus		# SCSI bus (required for SCSI)=0A=
device		ch		# SCSI media changers=0A=
device		da		# Direct Access (disks)=0A=
device		sa		# Sequential Access (tape etc)=0A=
device		cd		# CD=0A=
device		pass		# Passthrough device (direct SCSI access)=0A=
device		ses		# SCSI Environmental Services (and SAF-TE)=0A=
=0A=
# RAID controllers interfaced to the SCSI subsystem=0A=
#device		amr		# AMI MegaRAID=0A=
#device		asr		# DPT SmartRAID V, VI and Adaptec SCSI RAID=0A=
#device		ciss		# Compaq Smart RAID 5*=0A=
#device		dpt		# DPT Smartcache III, IV - See NOTES for options=0A=
#device		iir		# Intel Integrated RAID=0A=
#device		ips		# IBM (Adaptec) ServeRAID=0A=
#device		mly		# Mylex AcceleRAID/eXtremeRAID=0A=
#device		twa		# 3ware 9000 series PATA/SATA RAID=0A=
=0A=
# RAID controllers=0A=
#device		aac		# Adaptec FSA RAID=0A=
#device		aacp		# SCSI passthrough for aac (requires CAM)=0A=
#device		ida		# Compaq Smart RAID=0A=
#device		mlx		# Mylex DAC960 family=0A=
#device		pst		# Promise Supertrak SX6000=0A=
#device		twe		# 3ware ATA RAID=0A=
=0A=
# atkbdc0 controls both the keyboard and the PS/2 mouse=0A=
device		atkbdc		# AT keyboard controller=0A=
device		atkbd		# AT keyboard=0A=
device		psm		# PS/2 mouse=0A=
=0A=
device		vga		# VGA video card driver=0A=
=0A=
device		splash		# Splash screen and screen saver support=0A=
=0A=
# syscons is the default console driver, resembling an SCO console=0A=
device		sc=0A=
=0A=
# Enable this for the pcvt (VT220 compatible) console driver=0A=
#device		vt=0A=
#options 	XSERVER		# support for X server on a vt console=0A=
#options 	FAT_CURSOR	# start with block cursor=0A=
=0A=
device		agp		# support several AGP chipsets=0A=
=0A=
# Floating point support - do not disable.=0A=
device		npx=0A=
=0A=
# Power management support (see NOTES for more options)=0A=
#device		apm=0A=
# Add suspend/resume support for the i8254.=0A=
device		pmtimer=0A=
=0A=
# PCCARD (PCMCIA) support=0A=
# PCMCIA and cardbus bridge support=0A=
#device		cbb		# cardbus (yenta) bridge=0A=
##device 	pcic		# ExCA ISA and PCI bridges=0A=
#device		pccard		# PC Card (16-bit) bus=0A=
#device		cardbus		# CardBus (32-bit) bus=0A=
=0A=
# Serial (COM) ports=0A=
device		sio		# 8250, 16[45]50 based serial ports=0A=
=0A=
# Parallel port=0A=
#device		ppc=0A=
#device		ppbus		# Parallel port bus (required)=0A=
#device		lpt		# Printer=0A=
#device		plip		# TCP/IP over parallel=0A=
#device		ppi		# Parallel port interface device=0A=
##device 	vpo		# Requires scbus and da=0A=
=0A=
# If you've got a "dumb" serial or parallel PCI card that is=0A=
# supported by the puc(4) glue driver, uncomment the following=0A=
# line to enable it (connects to the sio and/or ppc drivers):=0A=
#device         puc=0A=
=0A=
# PCI Ethernet NICs.=0A=
#device		de		# DEC/Intel DC21x4x (``Tulip'')=0A=
device		em		# Intel PRO/1000 adapter Gigabit Ethernet Card=0A=
#device		txp		# 3Com 3cR990 (``Typhoon'')=0A=
#device		vx		# 3Com 3c590, 3c595 (``Vortex'')=0A=
=0A=
# PCI Ethernet NICs that use the common MII bus controller code.=0A=
# NOTE: Be sure to keep the 'device miibus' line in order to use these =
NICs!=0A=
device		miibus		# MII bus support=0A=
#device		bfe		# Broadcom BCM440x 10/100 Ethernet=0A=
device		bge		# Broadcom BCM570xx Gigabit Ethernet=0A=
#device		dc		# DEC/Intel 21143 and various workalikes=0A=
#device		fxp		# Intel EtherExpress PRO/100B (82557, 82558)=0A=
#device		pcn		# AMD Am79C97x PCI 10/100 (precedence over 'lnc')=0A=
device		re		# RealTek 8139C+/8169/8169S/8110S=0A=
device		rl		# RealTek 8129/8139=0A=
#device		sf		# Adaptec AIC-6915 (``Starfire'')=0A=
#device		sis		# Silicon Integrated Systems SiS 900/SiS 7016=0A=
#device		sk		# SysKonnect SK-984x & SK-982x gigabit Ethernet=0A=
#device		ste		# Sundance ST201 (D-Link DFE-550TX)=0A=
#device		ti		# Alteon Networks Tigon I/II gigabit Ethernet=0A=
#device		tl		# Texas Instruments ThunderLAN=0A=
#device		tx		# SMC EtherPower II (83c170 ``EPIC'')=0A=
device		vr		# VIA Rhine, Rhine II=0A=
#device		wb		# Winbond W89C840F=0A=
device		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')=0A=
=0A=
# ISA Ethernet NICs.  pccard NICs included.=0A=
#device		cs		# Crystal Semiconductor CS89x0 NIC=0A=
# 'device ed' requires 'device miibus'=0A=
#device		ed		# NE[12]000, SMC Ultra, 3c503, DS8390 cards=0A=
#device		ex		# Intel EtherExpress Pro/10 and Pro/10+=0A=
#device		ep		# Etherlink III based cards=0A=
#device		fe		# Fujitsu MB8696x based cards=0A=
#device		ie		# EtherExpress 8/16, 3C507, StarLAN 10 etc.=0A=
#device		lnc		# NE2100, NE32-VL Lance Ethernet cards=0A=
#device		sn		# SMC's 9000 series of Ethernet chips=0A=
#device		xe		# Xircom pccard Ethernet=0A=
=0A=
# ISA devices that use the old ISA shims=0A=
#device		le=0A=
=0A=
# Wireless NIC cards=0A=
#device		wlan		# 802.11 support=0A=
#device		an		# Aironet 4500/4800 802.11 wireless NICs.=0A=
#device		awi		# BayStack 660 and others=0A=
#device		wi		# WaveLAN/Intersil/Symbol 802.11 wireless NICs.=0A=
##device 	wl		# Older non 802.11 Wavelan wireless NIC.=0A=
=0A=
# Pseudo devices - the number indicates how many units to allocate.=0A=
device		random		# Entropy device=0A=
device		loop		# Network loopback=0A=
device		ether		# Ethernet support=0A=
device		sl		# Kernel SLIP=0A=
device		ppp		# Kernel PPP=0A=
device		tun		# Packet tunnel.=0A=
device		pty		# Pseudo-ttys (telnet etc)=0A=
device		md		# Memory "disks"=0A=
device		gif		# IPv6 and IPv4 tunneling=0A=
device		faith		# IPv6-to-IPv4 relaying (translation)=0A=
=0A=
# The `bpf' device enables the Berkeley Packet Filter.=0A=
# Be aware of the administrative consequences of enabling this!=0A=
device		bpf		# Berkeley packet filter=0A=
=0A=
# USB support=0A=
device		uhci		# UHCI PCI->USB interface=0A=
device		ohci		# OHCI PCI->USB interface=0A=
device 		ehci		# EHCI controller=0A=
device		usb		# USB Bus (required)=0A=
#device		udbp		# USB Double Bulk Pipe devices=0A=
device		ugen		# Generic=0A=
device		uhid		# "Human Interface Devices"=0A=
device		ukbd		# Keyboard=0A=
device		ulpt		# Printer=0A=
device		umass		# Disks/Mass storage - Requires scbus and da=0A=
device		ums		# Mouse=0A=
device		urio		# Diamond Rio 500 MP3 player=0A=
device		uscanner	# Scanners=0A=
# USB Ethernet, requires mii=0A=
device		aue		# ADMtek USB Ethernet=0A=
device		axe		# ASIX Electronics USB Ethernet=0A=
device		cue		# CATC USB Ethernet=0A=
device		kue		# Kawasaki LSI USB Ethernet=0A=
device		rue		# RealTek RTL8150 USB Ethernet=0A=
=0A=
# FireWire support=0A=
#device		firewire	# FireWire bus code=0A=
#device		sbp		# SCSI over FireWire (Requires scbus and da)=0A=
#device		fwe		# Ethernet over FireWire (non-standard!)=0A=
=0A=

------=_NextPart_000_001B_01C46D3A.3DA99070--




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