Hi,
With em0 and em1, both cards auto-negotiate GigaBit full-duplex on Linux on the
same host. With OpenBSD, em0, the onboard network interface, only
auto-negotiates 100MBit full duplex. Man em tells me, there are some chipsets
that only make 100Mbit with OpenBSD, but this card is not in the list there,
well its also not in the list of supported devices at all. So it might just
miss the right support.
em1, negotiates also under OpenBSD gigabit, full-duplex, and on a Gigabit LAN
connection, I get reasonable transfer rates of about 60MB/s.
Now the thing I'm courious about, which is with regard to high-bandwidht, high
latency connections.
With em0, and SB_MAX tweaked to (2048*1024) see the other thread (network
tuning for high bandwith and high latency)
I get transfer rates on such a link of about 8MB/s.
Swiching to use em0, even with the SB_MAX tweaked, I get only get transfer
speeds of about 1.5MB/s, which is about the same speed with em0, without
tweaking SB_MAX.
The card seems to be fine, since it does get about 60MB/s. on a LAN, so I
wonder why I don't see the same or even better speeds with the high bandwidth
high latency connection.
Sebastian
OpenBSD 5.0-current (GENERIC) #9: Sun Dec 4 12:24:15 CET 2011
r...@test.test.intern:/usr/src/sys/arch/amd64/compile/GENERIC
RTC BIOS diagnostic error 80<clock_battery>
real mem = 3209342976 (3060MB)
avail mem = 3109867520 (2965MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe3d70 (36 entries)
bios0: vendor Intel Corp. version "CO96510J.86A.5882.2007.0413.0100" date
04/13/2007
bios0: wortmann DQ965CO
acpi0 at bios0: rev 0
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP APIC WDDT MCFG ASF! SSDT SSDT SSDT SSDT SSDT TCPA
acpi0: wakeup devices SLPB(S4) P32_(S4) UAR1(S4) UAR2(S4) ILAN(S4) PEGP(S4)
PEX0(S4) PEX1(S4) PEX2(S4) PEX3(S4) PEX4(S4) PEX5(S4) UHC1(S3) UHC2(S3)
UHC3(S3) UHC4(S3) EHCI(S3) EHC2(S3) UH42(S3) UHC5(S3) AZAL(S3)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz, 1866.99 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,NXE,LONG
cpu0: 2MB 64b/line 8-way L2 cache
cpu0: apic clock running at 266MHz
cpu at mainbus0: not configured
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 0, remapped to apid 2
acpimcfg0 at acpi0 addr 0xf0000000, bus 0-127
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 7 (P32_)
acpiprt2 at acpi0: bus 2 (PEX0)
acpiprt3 at acpi0: bus 3 (PEX1)
acpiprt4 at acpi0: bus 4 (PEX2)
acpiprt5 at acpi0: bus 5 (PEX3)
acpiprt6 at acpi0: bus 6 (PEX4)
acpiprt7 at acpi0: bus -1 (PEX5)
acpicpu0 at acpi0: PSS
acpibtn0 at acpi0: SLPB
cpu0: Enhanced SpeedStep 1866 MHz: speeds: 1862, 1596 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 82Q965 Host" rev 0x02
ppb0 at pci0 dev 1 function 0 "Intel 82Q965 PCIE" rev 0x02: msi
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "ATI Radeon X1300/X1550" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
radeondrm0 at vga1: apic 2 int 16
drm0 at radeondrm0
"ATI Radeon X1300/X1550 Sec" rev 0x00 at pci1 dev 0 function 1 not configured
"Intel 82Q965 HECI" rev 0x02 at pci0 dev 3 function 0 not configured
pciide0 at pci0 dev 3 function 2 "Intel 82Q965 PT IDER" rev 0x02: DMA
(unsupported), channel 0 wired to native-PCI, channel 1 wired to native-PCI
pciide0: using apic 2 int 18 for native-PCI interrupt
pciide0: channel 0 ignored (not responding; disabled or no drives?)
pciide0: channel 1 ignored (not responding; disabled or no drives?)
"Intel 82Q965 KT" rev 0x02 at pci0 dev 3 function 3 not configured
em0 at pci0 dev 25 function 0 "Intel ICH8 IGP AMT" rev 0x02: msi, address
00:19:d1:72:eb:f1
uhci0 at pci0 dev 26 function 0 "Intel 82801H USB" rev 0x02: apic 2 int 16
uhci1 at pci0 dev 26 function 1 "Intel 82801H USB" rev 0x02: apic 2 int 21
ehci0 at pci0 dev 26 function 7 "Intel 82801H USB" rev 0x02: apic 2 int 18
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
azalia0 at pci0 dev 27 function 0 "Intel 82801H HD Audio" rev 0x02: msi
azalia0: codecs: Sigmatel STAC9227X
audio0 at azalia0
ppb1 at pci0 dev 28 function 0 "Intel 82801H PCIE" rev 0x02: msi
pci2 at ppb1 bus 2
ppb2 at pci0 dev 28 function 1 "Intel 82801H PCIE" rev 0x02: msi
pci3 at ppb2 bus 3
pciide1 at pci3 dev 0 function 0 "Marvell 88SE6101 IDE" rev 0xb1: DMA
(unsupported), channel 0 configured to native-PCI, channel 1 configured to
native-PCI
pciide1: using apic 2 int 17 for native-PCI interrupt
pciide1: channel 0 ignored (not responding; disabled or no drives?)
pciide1: channel 1 ignored (not responding; disabled or no drives?)
ppb3 at pci0 dev 28 function 2 "Intel 82801H PCIE" rev 0x02: msi
pci4 at ppb3 bus 4
ppb4 at pci0 dev 28 function 3 "Intel 82801H PCIE" rev 0x02: msi
pci5 at ppb4 bus 5
ppb5 at pci0 dev 28 function 4 "Intel 82801H PCIE" rev 0x02: msi
pci6 at ppb5 bus 6
uhci2 at pci0 dev 29 function 0 "Intel 82801H USB" rev 0x02: apic 2 int 23
uhci3 at pci0 dev 29 function 1 "Intel 82801H USB" rev 0x02: apic 2 int 19
uhci4 at pci0 dev 29 function 2 "Intel 82801H USB" rev 0x02: apic 2 int 18
ehci1 at pci0 dev 29 function 7 "Intel 82801H USB" rev 0x02: apic 2 int 23
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb6 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0xf2
pci7 at ppb6 bus 7
em1 at pci7 dev 0 function 0 "Intel PRO/1000GT (82541GI)" rev 0x05: apic 2 int
21, address 00:0e:0c:a8:86:43
"TI TSB43AB22 FireWire" rev 0x00 at pci7 dev 3 function 0 not configured
pcib0 at pci0 dev 31 function 0 "Intel 82801HO LPC" rev 0x02
pciide2 at pci0 dev 31 function 2 "Intel 82801H SATA" rev 0x02: DMA, channel 0
configured to native-PCI, channel 1 configured to native-PCI
pciide2: using apic 2 int 19 for native-PCI interrupt
wd0 at pciide2 channel 0 drive 0: <WDC WD800JD-00LSA0>
wd0: 16-sector PIO, LBA48, 76319MB, 156301488 sectors
wd0(pciide2:0:0): using PIO mode 4, Ultra-DMA mode 6
ichiic0 at pci0 dev 31 function 3 "Intel 82801H SMBus" rev 0x02: apic 2 int 21
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 1GB DDR2 SDRAM non-parity PC2-4200CL5
spdmem1 at iic0 addr 0x51: 1GB DDR2 SDRAM non-parity PC2-6400CL5
spdmem2 at iic0 addr 0x52: 1GB DDR2 SDRAM non-parity PC2-4200CL5
pciide3 at pci0 dev 31 function 5 "Intel 82801H SATA" rev 0x02: DMA, channel 0
wired to native-PCI, channel 1 wired to native-PCI
pciide3: using apic 2 int 19 for native-PCI interrupt
usb2 at uhci0: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci1: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb4 at uhci2: USB revision 1.0
uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb5 at uhci3: USB revision 1.0
uhub5 at usb5 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb6 at uhci4: USB revision 1.0
uhub6 at usb6 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at pcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
mtrr: Pentium Pro MTRR support
uhidev0 at uhub4 port 1 configuration 1 interface 0 "BTC USB Multimedia
Keyboard" rev 1.10/1.00 addr 2
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 modifier keys, 6 key codes
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
uhidev1 at uhub4 port 1 configuration 1 interface 1 "BTC USB Multimedia
Keyboard" rev 1.10/1.00 addr 2
uhidev1: iclass 3/0, 3 report ids
uhid0 at uhidev1 reportid 1: input=1, output=0, feature=0
uhid1 at uhidev1 reportid 2: input=3, output=0, feature=0
uhid2 at uhidev1 reportid 3: input=3, output=0, feature=8
vscsi0 at root
scsibus0 at vscsi0: 256 targets
softraid0 at root
scsibus1 at softraid0: 256 targets
root on wd0a (239ab09ca538f21a.a) swap on wd0b dump on wd0b
