Custom Kernel build and ZFS prefetch
R0B_ROD
witchdoctor.mdf at gmail.com
Tue Feb 10 20:16:49 UTC 2015
# kldstat
Id Refs Address Size Name
1 40 0xffffffff80200000 e340d8 kernel
2 1 0xffffffff81035000 2f9740 zfs.ko
3 2 0xffffffff8132f000 6678 opensolaris.ko
4 1 0xffffffff81411000 119559 radeonkms.ko
5 1 0xffffffff8152b000 48587 drm2.ko
6 4 0xffffffff81574000 22b6 iicbus.ko
7 1 0xffffffff81577000 1a56 iic.ko
8 1 0xffffffff81579000 1e4a iicbb.ko
9 1 0xffffffff8157b000 18f1 radeonkmsfw_PALM_pfp.ko
10 1 0xffffffff8157d000 1cee radeonkmsfw_PALM_me.ko
11 1 0xffffffff8157f000 136c radeonkmsfw_SUMO_rlc.ko
# uname -a
FreeBSD k8-bsd 10.1-STABLE FreeBSD 10.1-STABLE #0:
Mon Feb 9 20:42:19 EST 2015
root at k8-bsd:/usr/obj/usr/src/sys/MDFK4.2 amd64
KERNCONF:
profile 2
cpu HAMMER
ident MDFK
makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
makeoptions WITH_CTF=1 # Run ctfconvert(1) for DTrace support
options SCHED_ULE # ULE scheduler
options PREEMPTION # Enable kernel thread preemption
options INET # InterNETworking
options INET6 # IPv6 communications protocols
options TCP_OFFLOAD # TCP offload
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 QUOTA # Enable disk quotas for UFS
options MD_ROOT # MD is a potential root device
options NFSCL # New Network Filesystem Client
options NFSD # New Network Filesystem Server
options NFSLOCKD # Network Lock Manager
options NFS_ROOT # NFS usable as /, requires NFSCL
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_FREEBSD32 # Compatible with i386 binaries
options COMPAT_FREEBSD4 # Compatible with FreeBSD4
options COMPAT_FREEBSD5 # Compatible with FreeBSD5
options COMPAT_FREEBSD6 # Compatible with FreeBSD6
options COMPAT_FREEBSD7 # Compatible with FreeBSD7
options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
options KTRACE # ktrace(1) support
options STACK # stack(9) 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 PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
options AUDIT # Security event auditing
options CAPABILITY_MODE # Capsicum capability mode
options CAPABILITIES # Capsicum capabilities
options PROCDESC # Support for process descriptors
options MAC # TrustedBSD MAC Framework
options KDTRACE_FRAME # Ensure frames are compiled in
options KDTRACE_HOOKS # Kernel DTrace hooks
options DDB_CTF # Kernel ELF linker loads CTF data
options INCLUDE_CONFIG_FILE # Include this file in kernel
# Debugging support. Always need this:
options KDB # Enable kernel debugger support.
options KDB_TRACE # Print a stack trace for a panic.
# Make an SMP-capable kernel by default
options SMP # Symmetric MultiProcessor Kernel
# CPU frequency control, temp
device cpufreq
device cpuctl
# Bus support.
device agp
device acpi
options ACPI_DMAR
device pci
# ATA controllers
device ahci # AHCI-compatible SATA controllers
device ata
options ATA_STATIC_ID # Static device numbering
# ATA/SCSI peripherals
device scbus # SCSI bus (required for ATA/SCSI)
device da # Direct Access (disks)
device cd # CD
device pass # Passthrough device (direct ATA/SCSI access)
# 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
# Video
device vga # VGA video card driver
device splash # Splash screen and screen saver support
options VESA
# syscons is the default console driver, resembling an SCO console
device sc
options SC_PIXEL_MODE # add support for the raster text mode
# vt is the new video console driver
device vt
device vt_vga
device vt_efifb
# Wireless NIC cards
device bpf # Needed for wlan0 & DHCP
device wlan # 802.11 support
options IEEE80211_DEBUG # enable debug msgs
options IEEE80211_AMPDU_AGE # age frames in AMPDU reorder q's
options IEEE80211_SUPPORT_MESH # enable 802.11s draft 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 ath # Atheros NICs
device ath_pci # Atheros pci/cardbus glue
device ath_hal # pci/cardbus chip support
options ATH_ENABLE_11N # Enable 802.11n support for AR5416 and later
device ath_rate_sample # SampleRate tx rate control for ath
# PCI-E NIC
device miibus
device re # 8101 Realtek
# MMC/SD !NO-SUPPORT-YET
device mmc
device mmcsd
device sdhci
# Pseudo devices.
device loop # Network loopback
device random # Entropy device
device padlock_rng # VIA Padlock RNG
device rdrand_rng # Intel Bull Mountain RNG
device ether # Ethernet support
device vlan # 802.1Q VLAN support
device tun # Packet tunnel.
device md # Memory "disks"
device gif # IPv6 and IPv4 tunneling
device faith # IPv6-to-IPv4 relaying (translation)
device firmware # firmware assist module
# USB support
options USB_DEBUG # enable debug msgs
device uhci # UHCI PCI->USB interface
device ohci # OHCI PCI->USB interface
device ehci # EHCI PCI->USB interface (USB 2.0)
device xhci # XHCI PCI->USB interface (USB 3.0)
device usb # USB Bus (required)
device ukbd # Keyboard
device umass # Disks/Mass storage - Requires scbus and da
# Sound support
device sound # Generic sound driver (required)
device snd_hda # Intel High Definition Audio
# VirtIO support
device virtio # Generic VirtIO bus (required)
device virtio_pci # VirtIO PCI device
device vtnet # VirtIO Ethernet device
device virtio_blk # VirtIO Block device
device virtio_scsi # VirtIO SCSI device
device virtio_balloon # VirtIO Memory Balloon device
device hyperv
EOF
I was curious if I can compile the modules above into the kernel and if
that would be a good idea. I have made 6 kernels so far just cuz I keep
reinstalling to learn more. Im on Root-on-ZFS this time and I can really tell
a speed difference in building and making ports.
Also I have 4gb of RAM with 4gb swap and was wondering if enabling
the "vfs.zfs.prefetch_disable=0" would help if any. Comments?
Thanks for the help.
# cat loader.conf
kern.geom.label.gptid.enable="0"
zfs_load="YES"
hw.vga.textmode=0
kern.vty=vt
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