Kernel FreeBSD 7.0 sur VMWare ESX 3.5

Faisont un peu de tunning de FreeBSD. Etant donné que la configuration matériel virtuel est invariable il est donc possible de tailler un peu dans le kernel afin de supprimer le chargement de drivers qui de toute façon seront inutilisable sur le système.

Je suis parti du kernel GENERIC et les gain sont déjà plus que significatif.

Avant :

last pid:   782;  load averages:  0.00,  0.05,  0.13       up 0+00:23:23  11:25:05
18 processes:  1 running, 17 sleeping
CPU states:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
Mem: 9940K Active, 381M Inact, 63M Wired, 17M Cache, 60M Buf, 19M Free
Swap: 991M Total, 991M Free

Après :

last pid:   598;  load averages:  0.23,  0.17,  0.08    up 0+00:02:15  12:05:29
18 processes:  1 running, 17 sleeping
CPU states:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
Mem: 6584K Active, 4868K Inact, 13M Wired, 7888K Buf, 469M Free
Swap: 991M Total, 991M Free

Voici une première version d’un noyau dédié VMWare ESX 3.5 :

#
# VMWARE -- VMWare kernel configuration file for FreeBSD/i386
#
# $FreeBSD: src/sys/i386/conf/VMWARE,v 1.474.2.2.2.1 2008/02/06 03:24:28 scottl Exp $

cpu  I686_CPU
ident  VMWARE

# 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_4BSD  # 4BSD scheduler
options  PREEMPTION  # Enable kernel thread preemption
options  INET   # InterNETworking
options  INET6   # IPv6 communications protocols
options  SCTP   # Stream Control Transmission Protocol
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  UFS_GJOURNAL  # Enable gjournal-based UFS journaling
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_PART_GPT  # GUID Partition Tables.
options  GEOM_LABEL  # Provides labelization
options  COMPAT_43TTY  # BSD 4.3 TTY compat [KEEP THIS!]
options  COMPAT_FREEBSD4  # Compatible with FreeBSD4
options  COMPAT_FREEBSD5  # Compatible with FreeBSD5
options  COMPAT_FREEBSD6  # Compatible with FreeBSD6
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  ADAPTIVE_GIANT  # Giant mutex is adaptive.
options  STOP_NMI  # Stop CPUS using NMI instead of IPI
options  AUDIT   # Security event auditing

# To make an SMP kernel, the next two lines are needed
options  SMP   # Symmetric MultiProcessor Kernel
device  apic   # I/O APIC

# CPU frequency control
device  cpufreq

# 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
options  AHC_REG_PRETTY_PRINT # Print register bitfields in debug
     # output.  Adds ~128k to driver.
#device  ahd  # AHA39320/29320 and onboard AIC79xx devices
options  AHD_REG_PRETTY_PRINT # Print register bitfields in debug
     # output.  Adds ~215k to driver.
#device  amd  # AMD 53C974 (Tekram DC-390(T))
#device  hptiop  # Highpoint RocketRaid 3xxx series
#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  hptrr  # Highpoint RocketRAID 17xx, 22xx, 23xx, 25xx
#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
#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
device  uart  # Generic UART driver

# 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 sio, uart 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  le  # AMD Am7900 LANCE and Am79C9xx PCnet
#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  msk  # Marvell/SysKonnect Yukon II Gigabit Ethernet
#device  nfe  # nVidia nForce MCP on-board 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 'le')
#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  stge  # Sundance/Tamarack TC9021 gigabit Ethernet
#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  sn  # SMC's 9000 series of Ethernet chips
#device  xe  # Xircom pccard Ethernet

# Wireless NIC cards
#device  wlan  # 802.11 support
#device  wlan_wep # 802.11 WEP support
#device  wlan_ccmp # 802.11 CCMP support
#device  wlan_tkip # 802.11 TKIP support
#device  wlan_amrr # AMRR transmit rate control algorithm
#device  wlan_scan_ap # 802.11 AP mode scanning
#device  wlan_scan_sta # 802.11 STA mode scanning
#device  an  # Aironet 4500/4800 802.11 wireless NICs.
#device  ath  # Atheros pci/cardbus NIC's
#device  ath_hal  # Atheros HAL (Hardware Access Layer)
#device  ath_rate_sample # SampleRate tx rate control for ath
#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)
device  firmware # firmware assist module

# 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  rum  # Ralink Technology RT2501USB 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!)
#device  fwip  # IP over FireWire (RFC 2734,3146)
#device  dcons  # Dumb console driver
#device  dcons_crom # Configuration ROM for dcons