> Date: Wed, 14 Dec 2005 16:17:38 -0700
> From: Scott Long <[EMAIL PROTECTED]>
>
> Kevin Oberman wrote:
>
> > I recently upgraded my last desktop system from 4.11-Stable to
> > 6.0-Stable. I did an update to 5.3 then to RELENG_5,
> > RELENG_6_0_0_RELEASE and on to RELENG6_0.
> >
> > This system has been updated regularly from the days of at least 4.1.
> > The hardware is a 1GHz PIII with an ICH2 chipset. 256 MB of memory.
> >
> > After the upgrade, the system performs poorly. Specifically, it seems to
> > be blocking on I/O. If I have a dump or bsdtar running, a CPU intensive
> > job produced minimal CPU utilization and little progress. The system is
> > 70% or more idle all of the time. X is particularly sluggish. Many times
> > the system will simply appear to be locked up for seconds at a time like
> > all of the I/O is synchronous and the entire system is blocking on GIANT
> > until the disk write finishes. A level 0 dump of the system drive piped
> > through gzip and over the network took about 10 hours. Now it is 17
> > hours. My network link only ran at 3.4 Mbps (yes, that's bits, not
> > Bytes) over a 100 Mbps connection to the storage server. The rate was
> > much higher under 4.11.
> >
> > My attempts to track down the source of the problem simply failed. I
> > have examined my kernel configuration and found nothing out of the
> > ordinary. In fact, the the configuration varies from GENERIC only in
> > devices (both added and deleted), dropping 486 and 586 CPU code and a
> > larger SC_HISTORY. I have nothing in sysctl.conf and only enable DMA on
> > my ATAPI devices in loader.conf. I have confirmed that the disks are
> > running ATA100.
> >
> > Any suggestions on where to look? At this point I am baffled.
>
> The bufdaemon is probably causing some of the Giant contention.
> However, what it is contending with is the real question. Is
> your network driver and stack running MPSAFE? At least a 'dmesg'
> dump is needed here.
>
> Also, taking out CPU_I586 is usually a bad idea. It offers no
> performance penalties (unlike CPU_I386 and maybe CPU_I486), but
> enables things like optimized bcopy.
Ahh, This is the sort of thing I never realized. Is there anything in
the handbook that covers this? I had always been under the impression
that CPU_I686 enabled all things that the 686 was capable of. I will
build a new kernel to add that back in.
I am attaching a dmesg. I do have a few of drivers (uhci, pcm, psm,
atkbd0 and ichsmb) that are still marked as GIANT-LOCKED, but I'm not
using the USB very often. And I'm not using pcm or ichsmb during the
dump, either. I think everyone has the mouse and keyboard under GIANT,
but I can't really see those as a problem, either.
I will attach both my kernel configuration and my dmesg in hopes that
I'm missing something obvious.
Thanks!
--
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: [EMAIL PROTECTED] Phone: +1 510 486-8634
#
# PTAVV -- Modified ESnet kernel configuration file for FreeBSD/i386
# running on TWC Dell PIII system.
#
# 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 1.429.2.4 2005/10/28 19:21:27 jhb Exp $
machine i386
cpu I486_CPU
cpu I586_CPU
cpu I686_CPU
ident PTAVV
# 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
options PREEMPTION # Enable kernel thread preemption
options INET # InterNETworking
options INET6 # IPv6 communications protocols
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 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_GPT # GUID Partition Tables.
options COMPAT_43 # Compatible with BSD 4.3 [KEEP THIS!]
options COMPAT_FREEBSD4 # Compatible with FreeBSD4
options COMPAT_FREEBSD5 # Compatible with FreeBSD5
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 AHC_REG_PRETTY_PRINT # Print register bitfields in debug
# output. Adds ~128k to driver.
#options AHD_REG_PRETTY_PRINT # Print register bitfields in debug
# output. Adds ~215k to driver.
options ADAPTIVE_GIANT # Giant mutex is adaptive.
#device apic # I/O APIC
# 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
device atapicam # emulate ATAPI devices as SCSI ditto via CAM
# needs CAM to be present (scbus & pass)
options ATA_STATIC_ID # Static device numbering
# 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)
# 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 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
options SC_HISTORY_SIZE=2000
# Enable this for the pcvt (VT220 compatible) console driver
#device vt
#options XSERVER # support for X server on a vt console
#options FAT_CURSOR # start with block cursor
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
# Serial (COM) ports
device sio # 8250, 16[45]50 based serial ports
# 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 the sio and/or ppc drivers):
#device puc
# 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 xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
# 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)
# 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 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!)
# Sound card
device smbus
device ichsmb
device smb
device sound
device snd_ich
# Video capture card
device iicbus
device iicbb
device bktr
options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
Copyright (c) 1992-2005 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 6.0-STABLE #0: Sun Dec 11 23:18:16 PST 2005
[EMAIL PROTECTED]:/usr/obj/usr/src/sys/PTAVV
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel Pentium III (996.77-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x68a Stepping = 10
Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
real memory = 267350016 (254 MB)
avail memory = 256102400 (244 MB)
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <DELL GX150 > on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <Intel 82815 (i815 GMCH) host to PCI bridge> mem 0xf4000000-0xf7ffffff at
device 0.0 on pci0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci2: <ACPI PCI bus> on pcib2
xl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xec80-0xecff mem
0xfbfffc00-0xfbfffc7f irq 11 at device 12.0 on pci2
miibus0: <MII bus> on xl0
ukphy0: <Generic IEEE 802.3u media interface> on miibus0
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
xl0: Ethernet address: 00:06:5b:80:b1:fc
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel ICH2 UDMA100 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf at device 31.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
uhci0: <Intel 82801BA/BAM (ICH2) USB controller USB-A> port 0xff80-0xff9f irq
11 at device 31.2 on pci0
uhci0: [GIANT-LOCKED]
usb0: <Intel 82801BA/BAM (ICH2) USB controller USB-A> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
ichsmb0: <Intel 82801BA (ICH2) SMBus controller> port 0xdcd0-0xdcdf irq 10 at
device 31.3 on pci0
ichsmb0: [GIANT-LOCKED]
smbus0: <System Management Bus> on ichsmb0
smb0: <SMBus generic I/O> on smbus0
uhci1: <Intel 82801BA/BAM (ICH2) USB controller USB-B> port 0xff60-0xff7f irq 9
at device 31.4 on pci0
uhci1: [GIANT-LOCKED]
usb1: <Intel 82801BA/BAM (ICH2) USB controller USB-B> on uhci1
usb1: USB revision 1.0
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
pcm0: <Intel ICH2 (82801BA)> port 0xd800-0xd8ff,0xdc40-0xdc7f irq 10 at device
31.5 on pci0
pcm0: [GIANT-LOCKED]
pcm0: <Analog Devices AD1885 AC97 Codec>
fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model IntelliMouse, device ID 3
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xc87ff,0xc8800-0xcbfff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 996769408 Hz quality 800
Timecounters tick every 1.000 msec
ad0: 38166MB <IC35L040AVER07 0 ER4OA46A> at ata0-master UDMA100
ad1: 19092MB <IC35L020AVER07 0 ER2OA46A> at ata0-slave UDMA100
acd0: CDRW <SONY CD-RW CRX160E/1.0g> at ata1-master UDMA33
acd1: DMA limited to UDMA33, controller found non-ATA66 cable
acd1: DVDR <DVD-RW IDE1004/VER 0151> at ata1-slave UDMA33
pcm0: measured ac97 link rate at 55947 Hz
Trying to mount root from ufs:/dev/ad0s1a
cd0 at ata1 bus 0 target 1 lun 0
cd0: <DVDRW IDE1004 0151> Removable CD-ROM SCSI-0 device
cd0: 33.000MB/s transfers
cd0: Attempt to query device size failed: NOT READY, Medium not present - tray
closed
cd1 at ata1 bus 0 target 0 lun 0
cd1: <SONY CD-RW CRX160E 1.0g> Removable CD-ROM SCSI-0 device
cd1: 33.000MB/s transfers
cd1: Attempt to query device size failed: NOT READY, Medium not present
ipfw2 (+ipv6) initialized, divert loadable, rule-based forwarding disabled,
default to deny, logging disabled
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