标题：跟着ArthurXF学FreeBSD2——给FreeBSD一个优化的新内核
出处：BIWEB开源PHP WMS系统创始人ArthurXF肖飞的blog
时间：Thu, 18 Jan 2007 16:42:41 +0000
作者：ArthurXF
地址：http://www.bizeway.net/read.php/12.htm

内容：
　　FreeBSD安装好了以后呢，因为FreeBSD默认配置要支持很多的设备，要兼容各种设备管理啊，这样就启动了很多的驱动程序等等，这些东西我们都一般服务器配置好之后很多都用不到，而FreeBSD每次都要加载它们，这样FreeBSD启动慢，而且还占用资源，所以我们现在来重新配置FreeBSD的内核，去掉我们用不到的东西，这样我们就可以很快启动FreeBSD系统了。那么让我们开始：
cd /usr/src/sys/i386/conf 
cp GENERIC ArthurXF 
vi ArthurXF
大家自己选择一些要用到的设备，如果不用的就用#号注释掉，我把我的配置放出来仅供参考。
需要注意的是ident    ArthurXF ，必须和你的内核文件名一致。
引用
#
# GENERIC -- Generic 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.
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.429.2.7.2.2 2006/05/01 00:15:12 scottl Exp $

machine    i386
cpu    I486_CPU
cpu    I586_CPU
cpu    I686_CPU
ident    ArthurXF

# 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   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 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   COMPAT_FREEBSD5    # Compatible with FreeBSD5
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   ADAPTIVE_GIANT    # Giant mutex is adaptive.

device    apic      # I/O APIC

# Bus support.
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   ispfw    # Firmware for QLogic HBAs- normally a module
#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    arcmsr    # Areca SATA II RAID
#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    hptmv    # Highpoint RocketRAID 182x
#device    rr232x    # Highpoint RocketRAID 232x
#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    mfi    # LSI MegaRAID SAS
#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    kbdmux    # keyboard multiplexer

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

# 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    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    ixgb    # Intel PRO/10GbE 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    bce    # Broadcom BCM5706/BCM5708 Gigabit Ethernet
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    lge    # Level 1 LXT1001 gigabit Ethernet
device    nge    # NatSemi DP83820 gigabit Ethernet
device    nve    # nVidia nForce MCP on-board Ethernet Networking
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    vge    # VIA VT612x gigabit Ethernet
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

# Wireless NIC cards
#device    wlan    # 802.11 support
#device    an    # Aironet 4500/4800 802.11 wireless NICs.
#device    awi    # BayStack 660 and others
#device    ral    # Ralink Technology RT2500 wireless NICs.
#device    wi    # WaveLAN/Intersil/Symbol 802.11 wireless NICs.
#device    wl    # Older non 802.11 Wavelan wireless NIC.

# Pseudo devices.
device    loop    # Network loopback
device    random    # Entropy device
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!
# Note that 'bpf' is required for DHCP.
device    bpf    # Berkeley packet filter

# USB support
#device    uhci    # UHCI PCI->USB interface
#device    ohci    # OHCI PCI->USB interface
#device    ehci    # EHCI PCI->USB interface (USB 2.0)
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    ural    # Ralink Technology RT2500USB wireless NICs
#device    urio    # Diamond Rio 500 MP3 player
#device    uscanner  # Scanners
# USB Ethernet, requires miibus
#device    aue    # ADMtek USB Ethernet
#device    axe    # ASIX Electronics USB Ethernet
#device    cdce    # Generic USB over 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!)



编辑完了以后就保存退出。然后执行：
cd /usr/src
make kernel KERNCONF=ArthurXF
系统开始编译内核了，如果全部通过了就可以继续操作了，如果编译出错了，就可能是哪个必须要用到的设备被你注释掉了，好好找找，把注释取消重新编译，直到编译通过为止。呵呵
编译通过之后，就重起让新内核加载：
shutdown –r now 
重起之后，我们执行这个命令：
dmesg
这时我们将看到返回来的信息。
引用
Copyright (c) 1992-2006 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 6.1-RELEASE #0: Sun May  7 04:32:43 UTC 2006
    root@opus.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
ACPI APIC Table: 
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Celeron(R) CPU 2.13GHz (2126.45-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0xf41  Stepping = 1
  Features=0xbfebfbff
  Features2=0x441d
real memory  = 528416768 (503 MB)
avail memory = 507715584 (484 MB)
ioapic0  irqs 0-23 on motherboard
kbd1 at kbdmux0
acpi0:  on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0:  port 0x808-0x80b on acpi0
cpu0:  on acpi0
acpi_throttle0:  on cpu0
acpi_button0:  on acpi0
pcib0:  port 0xcf8-0xcff on acpi0
pci0:  on pcib0
agp0:  mem 0xd0000000-0xd7ffffff,0xdff80000-0xdfffffff irq 16 at device 2.0 on pci0
agp0: detected 8060k stolen memory
agp0: aperture size is 128M
uhci0:  port 0xe400-0xe41f irq 16 at device 29.0 on pci0
uhci0: [GIANT-LOCKED]
usb0:  on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1:  port 0xe800-0xe81f irq 19 at device 29.1 on pci0
uhci1: [GIANT-LOCKED]
usb1:  on uhci1
usb1: USB revision 1.0
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2:  port 0xec00-0xec1f irq 18 at device 29.2 on pci0
uhci2: [GIANT-LOCKED]
usb2:  on uhci2
usb2: USB revision 1.0
uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
ehci0:  mem 0xdff7bc00-0xdff7bfff irq 23 at device 29.7 on pci0
ehci0: [GIANT-LOCKED]
usb3: EHCI version 1.0
usb3: companion controllers, 2 ports each: usb0 usb1 usb2
usb3:  on ehci0
usb3: USB revision 2.0
uhub3: Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub3: 6 ports with 6 removable, self powered
pcib1:  at device 30.0 on pci0
pci3:  on pcib1
rl0:  port 0xcc00-0xccff mem 0xdfdfff00-0xdfdfffff irq 17 at device 4.0 on pci3
miibus0:  on rl0
rlphy0:  on miibus0
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl0: Ethernet address: 00:14:78:25:fd:e6
rl1:  port 0xc800-0xc8ff mem 0xdfdffe00-0xdfdffeff irq 18 at device 5.0 on pci3
miibus1:  on rl1
rlphy1:  on miibus1
rlphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl1: Ethernet address: 00:14:78:26:26:58
rl2:  port 0xc400-0xc4ff mem 0xdfdffd00-0xdfdffdff irq 17 at device 10.0 on pci3
miibus2:  on rl2
rlphy2:  on miibus2
rlphy2:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl2: Ethernet address: 00:13:8f:78:da:51
isab0:  at device 31.0 on pci0
isa0:  on isab0
atapci0:  port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xfc00-0xfc0f at device 31.1 on pci0
ata0:  on atapci0
ata1:  on atapci0
pci0:  at device 31.5 (no driver attached)
fdc0:  port 0x3f2-0x3f3,0x3f4-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: [FAST]
sio0:  port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio1:  port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
ppc0:  port 0x378-0x37f,0x778-0x77b irq 7 drq 3 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/9 bytes threshold
ppbus0:  on ppc0
plip0:  on ppbus0
lpt0:  on ppbus0
lpt0: Interrupt-driven port
ppi0:  on ppbus0
pmtimer0 on isa0
atkbdc0:  at port 0x60,0x64 on isa0
atkbd0:  irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
sc0:  at flags 0x100 on isa0
sc0: VGA 
vga0:  at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 2126445016 Hz quality 800
Timecounters tick every 1.000 msec
ad0: 76319MB  at ata0-master UDMA100
Trying to mount root from ufs:/dev/ad0s1a
Waiting (max 60 seconds) for system process `vnlru' to stop...done
Waiting (max 60 seconds) for system process `bufdaemon' to stop...done
Waiting (max 60 seconds) for system process `syncer' to stop...
Syncing disks, vnodes remaining...1 1 1 0 0 0 done
All buffers synced.
Uptime: 23h16m32s
Shutting down ACPI
Rebooting...
Copyright (c) 1992-2006 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 6.1-RELEASE #2: Thu Jan 18 07:52:26 CST 2007
    arthur@www.wap.com:/usr/obj/usr/src/sys/ArthurXF
ACPI APIC Table: 
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Celeron(R) CPU 2.13GHz (2126.44-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0xf41  Stepping = 1
  Features=0xbfebfbff
  Features2=0x441d
real memory  = 528416768 (503 MB)
avail memory = 507731968 (484 MB)
ioapic0  irqs 0-23 on motherboard
acpi0:  on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0:  port 0x808-0x80b on acpi0
cpu0:  on acpi0
acpi_throttle0:  on cpu0
acpi_button0:  on acpi0
pcib0:  port 0xcf8-0xcff on acpi0
pci0:  on pcib0
agp0:  mem 0xd0000000-0xd7ffffff,0xdff80000-0xdfffffff irq 16 at device 2.0 on pci0
agp0: detected 8060k stolen memory
agp0: aperture size is 128M
pci0:  at device 29.0 (no driver attached)
pci0:  at device 29.1 (no driver attached)
pci0:  at device 29.2 (no driver attached)
pci0:  at device 29.7 (no driver attached)
pcib1:  at device 30.0 on pci0
pci3:  on pcib1
rl0:  port 0xcc00-0xccff mem 0xdfdfff00-0xdfdfffff irq 17 at device 4.0 on pci3
miibus0:  on rl0
rlphy0:  on miibus0
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl0: Ethernet address: 00:14:78:25:fd:e6
rl1:  port 0xc800-0xc8ff mem 0xdfdffe00-0xdfdffeff irq 18 at device 5.0 on pci3
miibus1:  on rl1
rlphy1:  on miibus1
rlphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl1: Ethernet address: 00:14:78:26:26:58
rl2:  port 0xc400-0xc4ff mem 0xdfdffd00-0xdfdffdff irq 17 at device 10.0 on pci3
miibus2:  on rl2
rlphy2:  on miibus2
rlphy2:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl2: Ethernet address: 00:13:8f:78:da:51
isab0:  at device 31.0 on pci0
isa0:  on isab0
atapci0:  port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xfc00-0xfc0f at device 31.1 on pci0
ata0:  on atapci0
ata1:  on atapci0
pci0:  at device 31.5 (no driver attached)
sio0:  port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio1:  port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
ppc0:  port 0x378-0x37f,0x778-0x77b irq 7 drq 3 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/9 bytes threshold
ppbus0:  on ppc0
plip0:  on ppbus0
lpt0:  on ppbus0
lpt0: Interrupt-driven port
ppi0:  on ppbus0
pmtimer0 on isa0
atkbdc0:  at port 0x60,0x64 on isa0
atkbd0:  irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
sc0:  at flags 0x100 on isa0
sc0: VGA 
vga0:  at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 2126443912 Hz quality 800
Timecounters tick every 1.000 msec
ad0: 76319MB  at ata0-master UDMA100
Trying to mount root from ufs:/dev/ad0s1a



看到中间有这么一段吗？
引用
Rebooting...
Copyright (c) 1992-2006 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 6.1-RELEASE #2: Thu Jan 18 07:52:26 CST 2007
    arthur@www.wap.com:/usr/obj/usr/src/sys/ArthurXF


这里就是在替换内核，说明我们的新内核已经启动了。哈哈，内核编译成功！

引用
编译完成以后，我们现在的工作就是对系统一些参数进行优化调整。
# ee /boot/loader.conf
加入：
kern.ipc.maxsockets=65535
kern.maxusers=256
kern.ipc.nmbclusters=32768
kern.ipc.nsfbufs=2496
# ee /etc/sysctl.conf
加入：
net.inet.ip.sourceroute=0
net.inet.ip.accept_sourceroute=0
net.inet.tcp.drop_synfin=1
kern.maxvnodes=8446

kern.maxfiles=65536
kern.maxfilesperproc=32768
kern.ipc.somaxconn=32768
kern.ipc.shmmax=67108864 # 64MB
kern.ipc.shmall=32768
kern.ipc.shm_allow_removed=0
kern.coredump=1
net.inet.ip.portrange.last=65535

net.inet.tcp.msl=2500
net.inet.udp.blackhole=1
net.inet.udp.log_in_vain=1
net.inet.tcp.always_keepalive=1
net.inet.udp.blackhole=1
net.inet.raw.maxdgram=65536
net.inet.raw.recvspace=65536

net.inet.tcp.blackhole=2
net.inet.tcp.delayed_ack=1
net.inet.tcp.inflight.enable=1
net.inet.tcp.inflight.debug=0
net.inet.tcp.inflight.rttthresh=10
net.inet.tcp.inflight.min=6144
net.inet.tcp.inflight.max=1073725440
net.inet.tcp.inflight.stab=20

net.local.stream.sendspace=65536
net.local.stream.recvspace=65536
net.inet.tcp.sendspace=32768
net.inet.tcp.recvspace=65536
net.inet.udp.maxdgram=24576
net.inet.udp.recvspace=49152

net.inet.ip.rtexpire=3600
net.inet.ip.rtminexpire=2

net.inet.ip.random_id=1
net.inet.icmp.icmplim=100
net.inet.icmp.icmplim_output=1
net.inet.icmp.drop_redirect=1
net.inet.icmp.log_redirect=1

net.inet.tcp.keepidle=600000
net.inet.ip.redirect=0
net.isr.direct=1
net.inet.ip.intr_queue_maxlen=4096

kern.ipc.shm_use_phys=1
net.inet.ip.fastforwarding=1

vfs.hirunningspace=4194304
vfs.ufs.dirhash_maxmem=33554432 # 32MB
vfs.write_behind=0
security.bsd.see_other_uids=1
security.bsd.see_other_gids=1


设置完成以后reboot机器。
如果要不重启机器加载改动的参数还可以使用：
# /etc/rc.d/sysctl reload


现在ArthurXF本人正在搞PHP等技术培训，如果想学习的人可以跟我联系。另外培训的招生简章在这个网址，想了解的可以去看看。加我QQ：29011218交流也可。
PHP培训招生简章


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