Below is my FreeBSD 7.0 kernel configuration file. I created it on my reference system, to be used on four production servers whose hardware configurations differ some. For that reason there’re few options (indicated as “[OPTION]”) that are conditional for the configurations. I’ve also left in IPv6 options which are currently commented out, but that I may take into use later if/when IPv6 becomes more prevalent in the environment these servers operate.
# # INERTIA -- Inertia kernel configuration file for FreeBSD/i386 # # For more information on this file, please read the handbook section on # Kernel Configuration Files: # # http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html # # The handbook is also available locally in /usr/share/doc/handbook # if you've installed the doc distribution, otherwise always see the # FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the # latest information. # # An exhaustive list of options and more detailed explanations of the # device lines is also present in the ../../conf/NOTES and NOTES files. # If you are in doubt as to the purpose or necessity of a line, check first # in NOTES. # # Based on # $FreeBSD: src/sys/i386/conf/GENERIC,v 1.474.2.2.2.1 2008/02/06 03:24:28 scottl Exp $ ident INERTIA machine i386 cpu I686_CPU options SMP # Symmetric MultiProcessor Kernel (`device apic' is also required for multiprocessor use) options SCHED_4BSD # 4BSD scheduler options PREEMPTION # Enable kernel thread preemption 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 dirs options CD9660 # ISO 9660 Filesystem options PROCFS # Process filesystem (requires PSEUDOFS) options PSEUDOFS # Pseudo-filesystem framework options MSDOSFS # MSDOS filesystem support (for floppies) options COMPAT_43 # Compatible with BSD 4.3 (required) options COMPAT_FREEBSD4 # Compatible with FreeBSD4 options COMPAT_FREEBSD5 # Compatible with FreeBSD5 options COMPAT_FREEBSD6 # Compatible with FreeBSD6 options SCSI_DELAY=15000 # Delay (in ms) before probing SCSI (TWA/TWE issue) 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, may be needed to hot-plug USB keyboards options AHC_REG_PRETTY_PRINT # Print register bitfields in debug output options AHD_REG_PRETTY_PRINT # Print register bitfields in debug output options ADAPTIVE_GIANT # Giant mutex is adaptive options ACCEPT_FILTER_HTTP # Must be here or AcceptFilter won't work w/Apache2 options SC_DISABLE_REBOOT # Disable Ctrl-Alt-Del reboot (this is a server) device apic # I/O APIC (required) device npx # The Numeric Processing eXtension driver (required) device pci device isa # Required by npx device fdc # Floppy drives device ata # ATA and ATAPI devices device atadisk # ATA disk drives device ataraid # ATA RAID drives [OPTION] device atapicd # ATAPI CDROM drives options ATA_STATIC_ID # Static device numbering device scbus # SCSI bus (required for SCSI, ALSO REQ'D FOR SATA-RAID, USB/umass) device da # Direct Access (disks) device pass # Passthrough device (direct SCSI access) #device twe # 3ware ATA RAID [OPTION] #device twa # 3ware 9000 series PATA/SATA RAID [OPTION] #options TWA_DEBUG # 0-10; 10 prints the most messages; enable for twa debug only device atkbdc # AT keyboard controller device atkbd # AT keyboard device kbdmux # keyboard multiplexer device vga # VGA video card driver device sc # syscons, the default console driver device sio # 8250, 16[45]50 based serial ports device ppc # Parallel port device ppbus # Parallel port bus (required) device lpt # Printer device ppi # Parallel port interface device #device miibus # MII bus support (required by some NICs) [OPTION] #device fxp # Intel EtherExpress PRO/100B (82557, 82558); requires miibus [OPTION] device em # Intel PRO/1000 adapter Gigabit Ethernet Card [OPTION] options DEVICE_POLLING # Imporoves network driver performance device coretemp # On-die temperature sensor on Intel Core and newer CPUs [OPTION] device loop # Network loopback device random # Entropy device device ether # Ethernet support device pty # Pseudo-ttys (telnet etc) #device gif # IPv6 and IPv4 tunneling #device faith # IPv6-to-IPv4 relaying (translation) device bpf # Berkeley packet filter # USB support [OPTION] device uhci # USB support / UHCI PCI->USB interface device ohci # USB support / OHCI PCI->USB interface device ehci # USB support / EHCI PCI->USB interface (USB 2.0) device usb # USB support / USB Bus (required) device ugen # USB support / Generic device uhid # USB support / "Human Interface Devices" device ukbd # USB support / Keyboard device umass # USB support / Disks/Mass storage - Requires scbus and da options COMPAT_LINUX # Linux compat / Enable Linux ABI emulation options COMPAT_AOUT # Linux compat / Enable i386 a.out binary support options LINPROCFS # Linux compat / Enable procfs support (COMPAT_LINUX / PSEUDOFS)