Date: Sat, 23 Aug 2008 13:33:56 +0200 From: Anselm Strauss <amsibamsi@gmail.com> To: freebsd-questions@freebsd.org Subject: Process in 'biowr' state Message-ID: <9F12CA33-0DD9-44AF-8442-06EA8B02AFB3@gmail.com>
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Hi, I have a problem with my alix2c2 router. It's a all-in-one board with compact flash card as root device. I setup the card from another machine, then booted it, and then wanted to install the manpage distribution. But that took forever, I always had to quit it. I then noticed that it downloads the files okay, but then when extracting there is a cpio process in state biowr, which I assume means blocked I/ O writing. I know that CF cards can be slow compared to hard disks, but after all it's a 120X speed card. According to the specification this is about 18 Mbytes/s. I made a simple test by just touching a lot of files, beyond 200 it gets really slow. The touch process then resides in biowr state, the CPU is 99% idle. --- bishop test # i=1; time while [ $i -lt 100 ]; do touch $i; i=$[i+1]; done; rm *; sync real 0m1.530s user 0m0.140s sys 0m0.459s bishop test # i=1; time while [ $i -lt 200 ]; do touch $i; i=$[i+1]; done; rm *; sync real 0m3.016s user 0m0.286s sys 0m0.922s bishop test # i=1; time while [ $i -lt 300 ]; do touch $i; i=$[i+1]; done; rm *; sync real 0m19.218s user 0m0.555s sys 0m1.270s bishop test # i=1; time while [ $i -lt 1000 ]; do touch $i; i=$[i+1]; done; rm *; sync real 4m26.730s user 0m1.690s sys 0m4.399s bishop test # --- Now, I'm not sure what to do about that. In top I see no resources that are exhausted. In syslog or dmesg there are no messages. Is it really possible that CF is that slow? Kernel messages are: --- Copyright (c) 1992-2008 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 is a registered trademark of The FreeBSD Foundation. FreeBSD 7.0-RELEASE-p2 #0: Wed Jun 18 07:33:20 UTC 2008 root@i386-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Geode(TM) Integrated Processor by AMD PCS (498.05-MHz 586-class CPU) Origin = "AuthenticAMD" Id = 0x5a2 Stepping = 2 Features=0x88a93d<FPU,DE,PSE,TSC,MSR,CX8,SEP,PGE,CMOV,CLFLUSH,MMX> AMD Features=0xc0400000<MMX+,3DNow!+,3DNow!> real memory = 268435456 (256 MB) avail memory = 248811520 (237 MB) pnpbios: Bad PnP BIOS data checksum kbd0 at kbdmux0 K6-family MTRR support enabled (2 registers) ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413) hptrr: HPT RocketRAID controller driver v1.1 (Jun 18 2008 07:32:57) cpu0 on motherboard pcib0: <Host to PCI bridge> pcibus 0 on motherboard pci0: <PCI bus> on pcib0 pci0: <encrypt/decrypt, entertainment crypto> at device 1.2 (no driver attached) vr0: <VIA VT6105M Rhine III 10/100BaseTX> port 0x1000-0x10ff mem 0xe0000000-0xe0 vr0: Quirks: 0x2 miibus0: <MII bus> on vr0 ukphy0: <Generic IEEE 802.3u media interface> PHY 1 on miibus0 ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto vr0: using obsoleted if_watchdog interface vr0: Ethernet address: 00:0d:b9:14:d9:e0 vr0: [ITHREAD] vr1: <VIA VT6105M Rhine III 10/100BaseTX> port 0x1400-0x14ff mem 0xe0040000-0xe0 vr1: Quirks: 0x2 miibus1: <MII bus> on vr1 ukphy1: <Generic IEEE 802.3u media interface> PHY 1 on miibus1 ukphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto vr1: using obsoleted if_watchdog interface vr1: Ethernet address: 00:0d:b9:14:d9:e1 vr1: [ITHREAD] ath0: <Atheros 5212> mem 0xe0080000-0xe008ffff irq 9 at device 12.0 on pci0 ath0: [ITHREAD] ath0: using obsoleted if_watchdog interface ath0: Ethernet address: 00:80:48:57:c1:69 ath0: mac 10.5 phy 6.1 radio 6.3 isab0: <PCI-ISA bridge> port 0x6000-0x6007,0x6100-0x61ff,0x6200-0x623f, 0x9d00-00 isa0: <ISA bus> on isab0 atapci0: <AMD CS5536 UDMA100 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x30 ata0: <ATA channel 0> on atapci0 ata0: [ITHREAD] ata1: <ATA channel 1> on atapci0 ata1: [ITHREAD] ohci0: <OHCI (generic) USB controller> mem 0xefffe000-0xefffefff irq 15 at devi0 ohci0: [GIANT-LOCKED] ohci0: [ITHREAD] usb0: OHCI version 1.0, legacy support usb0: <OHCI (generic) USB controller> on ohci0 usb0: USB revision 1.0 uhub0: <AMD OHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0 uhub0: 4 ports with 4 removable, self powered ehci0: <EHCI (generic) USB 2.0 controller> mem 0xefffd000-0xefffdfff irq 15 at 0 ehci0: [GIANT-LOCKED] ehci0: [ITHREAD] usb1: EHCI version 1.0 usb1: companion controller, 4 ports each: usb0 usb1: <EHCI (generic) USB 2.0 controller> on ehci0 usb1: USB revision 2.0 uhub1: <AMD EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb1 uhub1: 4 ports with 4 removable, self powered pmtimer0 on isa0 orm0: <ISA Option ROM> at iomem 0xe0000-0xea7ff pnpid ORM0000 on isa0 ppc0: parallel port not found. sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 16550A, console sio0: [FILTER] sio1: configured irq 3 not in bitmap of probed irqs 0 sio1: port may not be enabled Timecounter "TSC" frequency 498054207 Hz quality 800 Timecounters tick every 1.000 msec hptrr: no controller detected. ad0: DMA limited to UDMA33, device found non-ATA66 cable ad0: FAILURE - SET_MULTI status=51<READY,DSC,ERROR> error=4<ABORTED> ad0: 7647MB <FLASH CARD 20080128> at ata0-master UDMA33 Trying to mount root from ufs:/dev/ad0s3a Loading configuration files. No suitable dump device was found. Entropy harvesting: interrupts ethernet point_to_point kickstart. Starting file system checks: /dev/ad0s3a: FILE SYSTEM CLEAN; SKIPPING CHECKS /dev/ad0s3a: clean, 3278935 free (5855 frags, 818270 blocks, 0.2% fragmentation) Setting hostuuid: 543a82a0-bfdf-11d3-8691-000db914d9e0. Setting hostid: 0x77f02bce. Mounting local file systems:. Setting hostname: bishop.marvels.xx. net.inet6.ip6.auto_linklocal: 1 -> 0 hw.syscons.bell: 1 -> 0 vr0: changing name to 'public' public: link state changed to UP lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4 inet6 ::1 prefixlen 128 inet 127.0.0.1 netmask 0xff000000 public: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=b<RXCSUM,TXCSUM,VLAN_MTU> ether 00:0d:b9:14:d9:e0 inet 192.168.1.2 netmask 0xffffff00 broadcast 192.168.1.255 media: Ethernet autoselect (100baseTX <full-duplex>) status: active add net default: gateway 192.168.1.254 Additional routing options:. Starting devd. vr1: link state changed to DOWN Generating host.conf. Additional IP options:. Mounting NFS file systems:. ELF ldconfig path: /lib /usr/lib /usr/lib/compat /usr/local/lib a.out ldconfig path: /usr/lib/aout /usr/lib/compat/aout Creating and/or trimming log files:. Starting syslogd. /etc/rc: WARNING: Dump device does not exist. Savecore not run. Initial i386 initialization:. Additional ABI support:. Setting date via ntp. 23 Aug 13:19:27 ntpdate[649]: step time server 212.87.0.71 offset -0.014994 sec Clearing /tmp (X related). Starting local daemons:. Updating motd. Mounting late file systems:. Starting ntpd. Starting sshd. Starting cron. Local package initialization:. Starting background file system checks in 60 seconds. --- Any help is appreciated. Anselm
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