FreeBSD-7.1-RELEASEのULEとDualCore Atom
今このマシンを使っているのですが、FreeBSD 7.1-RELEASEに上げたところ、スケジューラーと相性が悪く、負荷をかけたら死ぬという状況に…。
たまにえげつないほどの処理をするので、これは困ったなぁと思い、4BSDに直しました。
いくつか調べると、FreeBSD-Stableのメーリングリストに流れたhttp://www.nabble.com/Big-problems-with-7.1-locking-up-:-(-td21364913.htmlでは、ULEでいくつか問題があって4BSDスケジュールにすると良いよん。という提案が出てます。
以下は、私のKERNCONFです。
# # 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 1.474.2.15 2008/11/24 00:52:26 yongari Exp $ #cpu I486_CPU #cpu I586_CPU cpu I686_CPU ident MYKERNEL # 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. ULE is not unstablity 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 NFSLOCKD # Network Lock Manager 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 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 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 #options KDTRACE_HOOKS # Kernel DTrace hooks # 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 # 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 device miibus # MII bus support device re # RealTek 8139C+/8169/8169S/8110S device rl # RealTek 8129/8139 # 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 #include GENERIC # NetATalk options NETATALK # Shemapho options SHMMAXPGS=4096 options SHMSEG=256 options SEMMNI=256 options SEMMNS=512 options SEMMNU=256 options SEMMAP=256 # OpenBSD Packet Filter device pf device pflog device pfsync # Altinate Queing of Network Packets # See - man 4 altq # ALTQ Enable ALTQ. # ALTQ_CBQ Build the ``Class Based Queuing'' discipline. # ALTQ_RED Build the ``Random Early Detection'' extension. # ALTQ_RIO Build ``Random Early Drop'' for input and output. # ALTQ_HFSC Build the ``Hierarchical Packet Scheduler'' discipline. # ALTQ_CDNR Build the traffic conditioner. This option is meaningless at # the moment as the conditioner is not used by any of the # available disciplines or consumers. # ALTQ_PRIQ Build the ``Priority Queuing'' discipline. # ALTQ_NOPCC Required for SMP builds. # ALTQ_DEBUG Enable additional debugging facilities. options ALTQ options ALTQ_RED options ALTQ_CBQ options ALTQ_RIO options ALTQ_HFSC # options ALTQ_CDNR options ALTQ_PRIQ options ALTQ_NOPCC #options MROUTING
