A local NetBSD user tells me this system is only able to write the
disk at about 600kB/s.  Is there any known bug in ahc for 1.6.2 that
would cause this?  Any reason to think 2.0_BETA improves the situation?
Here is the dmesg.  This is a Dell workstation, btw.

Dave

NetBSD 1.6.2 (GENERIC) #0: Tue Feb 10 21:53:10 UTC 2004
    autobuild@tgm.netbsd.org:/autobuild/netbsd-1-6-PATCH002/i386/OBJ/autobuild/netbsd-1-6-PATCH002/src/sys/arch/i386/compile/GENERIC
cpu0: Intel Pentium 4 (686-class), 1794.65 MHz
cpu0: D-cache 8 KB 64b/line 4-way
cpu0: L2 cache 256 KB 64b/line 8-way
cpu0: features 3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu0: features 3febfbff<PGE,MCA,CMOV,FGPAT,PSE36,CFLUSH,DS,ACPI,MMX>
cpu0: features 3febfbff<FXSR,SSE,SSE2,SS,HTT,TM>
total memory = 511 MB
avail memory = 467 MB
using 6144 buffers containing 26268 KB of memory
BIOS32 rev. 0 found at 0xffe90
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 0 function 0
pchb0: Intel 82850 Host (rev. 0x04)
pchb0: random number generator enabled
agp0 at pchb0: aperture at 0xf0000000, size 0x8000000
ppb0 at pci0 dev 1 function 0: Intel 82850/82860 AGP (rev. 0x04)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
vga1 at pci1 dev 0 function 0: ATI Technologies product 0x5446 (rev. 0x00)
pci_mem_find: void region
pci_mem_find: void region
pci_mem_find: void region
wsdisplay0 at vga1 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
ppb1 at pci0 dev 30 function 0: Intel 82801BA Hub-to-PCI Bridge (rev. 0x04)
pci2 at ppb1 bus 2
pci2: i/o space, memory space enabled
ahc1 at pci2 dev 7 function 0
ahc1: interrupting at irq 11
ahc1: aic7892 Wide Channel A, SCSI Id=7, 16/255 SCBs
scsibus0 at ahc1: 16 targets, 8 luns per target
ex0 at pci2 dev 12 function 0: 3Com 3c905C-TX 10/100 Ethernet with mngmt (rev. 0x78)
ex0: interrupting at irq 11
ex0: MAC address 00:06:5b:dd:97:2f
exphy0 at ex0 phy 24: 3Com internal media interface
exphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
pcib0 at pci0 dev 31 function 0
pcib0: Intel 82801BA LPC Interface Bridge (rev. 0x04)
pciide0 at pci0 dev 31 function 1: Intel 82801BA IDE Controller (ICH2) (rev. 0x04)
pciide0: bus-master DMA support present
pciide0: primary channel wired to compatibility mode
pciide0: primary channel ignored (disabled)
pciide0: secondary channel wired to compatibility mode
atapibus0 at pciide0 channel 1: 2 targets
cd0 at atapibus0 drive 0: <SAMSUNG CD-ROM  SC-148C, , B100> type 5 cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
pciide0: secondary channel interrupting at irq 15
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
uhci0 at pci0 dev 31 function 2: Intel 82801BA USB Controller (rev. 0x04)
uhci0: interrupting at irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
Intel 82801BA SMBus Controller (SMBus serial bus, revision 0x04) at pci0 dev 31 function 3 not configured
uhci1 at pci0 dev 31 function 4: Intel 82801BA USB Controller (rev. 0x04)
uhci1: interrupting at irq 9
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
auich0 at pci0 dev 31 function 5: i82801BA (ICH2) AC-97 Audio
auich0: interrupting at irq 10
auich0: ADS96 codec; headphone, Analog Devices Phat Stereo
audio0 at auich0: full duplex, mmap, independent
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
lpt0 at isa0 port 0x378-0x37b irq 7
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
biomask eb65 netmask eb65 ttymask fbe7
scsibus0: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 0 lun 0: <FUJITSU, MAN3184MP, 5507> SCSI3 0/direct fixed
sd0: 17366 MB, 29694 cyl, 2 head, 598 sec, 512 bytes/sect x 35566478 sectors
sd0: sync (25.0ns offset 127), 16-bit (80.000MB/s) transfers, tagged queueing
Kernelized RAIDframe activated
boot device: sd0
root on sd0a dumps on sd0b
root file system type: ffs
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
-- 
David Young             OJC Technologies
dyoung@ojctech.com      Urbana, IL * (217) 278-3933