If I'm reading it correctly, this bit of the dmesg says that my hard
drive is not using DMA -- and so is running very inefficiently:
wdc0 at isa0 port 0x1f0/8 irq 14
wd0 at wdc0 channel 0 drive 0: <Maxtor 91024D4>
wd0: 16-sector PIO, LBA, 9765MB, 19999728 sectors
wd0(wdc0:0:0): using BIOS timings
This isn't a big deal, since the system (a light-duty home firewall
built from old junk I had lying around) can handle the presented load
despite this issue -- but I'd like to understand what's happening.
AFAIK all of the hardware involved is DMA-capable. The system is a
Dell Dimension P90 (model XPSP90MT, service ID 463HN) with a larger
disk swapped in; one additional glitch is that the BIOS apparently
doesn't believe in disks this large, resulting in a delay at boot time
(the root partition is at the beginning of the disk, within the area
that the BIOS does understand). [Pointers to] any information on how
to figure out what's really happening would be appreciated.
Thanks,
Dave
The full dmesg is:
OpenBSD 3.7 (GENERIC) #50: Sun Mar 20 00:01:57 MST 2005
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel Pentium (P54C) ("GenuineIntel" 586-class) 88 MHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,MCE,CX8
cpu0: F00F bug workaround installed
real mem = 83468288 (81512K)
avail mem = 68882432 (67268K)
using 1044 buffers containing 4276224 bytes (4176K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 09/08/95, BIOS32 rev. 0 @
0xfd8f0
pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000
pcibios0: PCI BIOS has 4 Interrupt Routing table entries
pcibios0: no compatible PCI ICU found
pcibios0: PCI bus #0 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xed000/0x1000
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 2 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82434LX/NX PCI/Cache/DRAM" rev
0x11
"PC Technology RZ1000" rev 0x01 at pci0 dev 1 function 0 not configured
pcib0 at pci0 dev 2 function 0 "Intel 82378IB ISA" rev 0x03
vga1 at pci0 dev 6 function 0 "ARC Logic 2000PV" rev 0x00
wsdisplay0 at vga1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
rl0 at pci0 dev 12 function 0 "D-Link Systems 530TX+" rev 0x10: irq 9
address 00:0d:88:22:00:91
rlphy0 at rl0 phy 0: RTL internal phy
rl1 at pci0 dev 14 function 0 "D-Link Systems 530TX+" rev 0x10: irq 10
address 00:0d:88:24:47:53
rlphy1 at rl1 phy 0: RTL internal phy
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0 (mux 1 ignored for console): console keyboard, using
wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
wdc0 at isa0 port 0x1f0/8 irq 14
wd0 at wdc0 channel 0 drive 0: <Maxtor 91024D4>
wd0: 16-sector PIO, LBA, 9765MB, 19999728 sectors
wd0(wdc0:0:0): using BIOS timings
wdc1 at isa0 port 0x170/8 irq 15
atapiscsi0 at wdc1 channel 0 drive 1
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <SONY, CD-ROM CDU55E, 1.0u> SCSI0 5/cdrom
removable
cd0(wdc1:0:1): using BIOS timings
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
npx0 at isa0 port 0xf0/16: using exception 16
cpu0: WARNING: Pentium FDIV bug detected!
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
isapnp0 at isa0 port 0x279: read port 0x203
ne3 at isapnp0 "Ethernet PnP ISA Card /S , AXE2201, PNP80D6, " port
0x240/32 irq 5
ne3: NE2000 Ethernet
ne3: address 00:40:05:c0:ad:75
biomask e945 netmask ef65 ttymask ffe7
pctr: 586-class performance counters and user-level cycle counter
enabled
dkcsum: wd0 matched BIOS disk 80
root on wd0a
rootdev=0x0 rrootdev=0x300 rawdev=0x302
--
Dave Anderson
<[EMAIL PROTECTED]>
