Date: Tue, 10 Feb 2015 15:17:21 -0500 From: R0B_ROD <witchdoctor.mdf@gmail.com> To: freebsd-questions@freebsd.org Subject: Custom Kernel build and ZFS prefetch Message-ID: <20150210201721.GA45296@k8-bsd.hsd1.ga.comcast.net>
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# 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@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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