(We've seen this problem through a few OpenBSD releases. 5.2 is much
improved over 4.8 in this regard. Using BIOS to disable multiple cores
on each physical CPU also yielded greater throughput. Hyperthreading and
virtualization BIOS extensions are off.)
We have two Dell poweredge 710 systems in an active/passive carp
failover configuration, acting as firewall systems, with another one
currently being used for testing.
Various tests show the system can handle close to 10GbE speeds in and
out, but I've not been able to push much beyond that, hitting a wall at
about 11-12Gb/s.
As I try to push the test system, interrupts climb above 12-15k/second
(seen via systat), consuming more and more of the first CPU until after
about 50% utilisation (according to top), it just hits a wall and
refuses to spit out any more bandwidth.
A coworker was able to drive it up to close to 60k interrupts/second,
but was not able to get much more through it.
Comparison tests, booting a Debian "Squeeze" live cd, and booting
FreeBSD 9.x, indicate that out of the box, they can push 15-20Gb/s --
which, while lower than what I would expect, is an improvement.
Are there tuning options that we've not seen yet? Googling, reading the
ix(4) manpage have not exposed a clear "go faster" option, and I'm
concerned about the load and interrupts concentrating on one CPU so heavily.
ifconfig (from test box, minux carp and vlan interfaces) and dmesg enclosed.
OpenBSD 5.2 (GENERIC.MP) #368: Wed Aug 1 10:04:49 MDT 2012
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 12870651904 (12274MB)
avail mem = 12505665536 (11926MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xbf49c000 (84 entries)
bios0: vendor Dell Inc. version "6.3.0" date 07/24/2012
bios0: Dell Inc. PowerEdge R710
acpi0 at bios0: rev 2
acpi0: sleep states S0 S4 S5
acpi0: tables DSDT FACP APIC SPCR HPET DM__ MCFG WDAT SLIC ERST HEST
BERT EINJ TCPA
acpi0: wakeup devices PCI0(S5)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 16 (boot processor)
cpu0: Intel(R) Xeon(R) CPU X5570 @ 2.93GHz, 2926.44 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,DCA,SSE4.1,SSE4.2,POPCNT,NXE,LONG,LAHF
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: apic clock running at 132MHz
cpu1 at mainbus0: apid 0 (application processor)
cpu1: Intel(R) Xeon(R) CPU X5570 @ 2.93GHz, 2926.00 MHz
cpu1:
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,DCA,SSE4.1,SSE4.2,POPCNT,NXE,LONG,LAHF
cpu1: 256KB 64b/line 8-way L2 cache
ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 20, 24 pins
ioapic1 at mainbus0: apid 1 pa 0xfec80000, version 20, 24 pins
ioapic1: misconfigured as apic 0, remapped to apid 1
acpihpet0 at acpi0: 14318179 Hz
acpimcfg0 at acpi0 addr 0xe0000000, bus 0-255
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (PEX1)
acpiprt2 at acpi0: bus 2 (PEX3)
acpiprt3 at acpi0: bus 3 (PEX4)
acpiprt4 at acpi0: bus 4 (PEX5)
acpiprt5 at acpi0: bus 5 (PEX6)
acpiprt6 at acpi0: bus 6 (PEX7)
acpiprt7 at acpi0: bus 7 (PEX9)
acpiprt8 at acpi0: bus -1 (PEXA)
acpiprt9 at acpi0: bus -1 (SBEX)
acpiprt10 at acpi0: bus 8 (COMP)
acpicpu0 at acpi0
acpicpu1 at acpi0
ipmi at mainbus0 not configured
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 5520 Host" rev 0x13
ppb0 at pci0 dev 1 function 0 "Intel X58 PCIE" rev 0x13
pci1 at ppb0 bus 1
bnx0 at pci1 dev 0 function 0 "Broadcom BCM5709" rev 0x20: apic 1 int 4
bnx1 at pci1 dev 0 function 1 "Broadcom BCM5709" rev 0x20: apic 1 int 16
ppb1 at pci0 dev 3 function 0 "Intel X58 PCIE" rev 0x13
pci2 at ppb1 bus 2
bnx2 at pci2 dev 0 function 0 "Broadcom BCM5709" rev 0x20: apic 1 int 0
bnx3 at pci2 dev 0 function 1 "Broadcom BCM5709" rev 0x20: apic 1 int 10
ppb2 at pci0 dev 4 function 0 "Intel X58 PCIE" rev 0x13
pci3 at ppb2 bus 3
mpi0 at pci3 dev 0 function 0 "Symbios Logic SAS1068E" rev 0x08: msi
scsibus0 at mpi0: 112 targets
sd0 at scsibus0 targ 0 lun 0: <Dell, VIRTUAL DISK, 1028> SCSI3 0/direct
fixed naa.600508e000000000a54b752495c4c504
sd0: 237952MB, 512 bytes/sector, 487325696 sectors
ses0 at scsibus0 targ 8 lun 0: <DP, BACKPLANE, 1.07> SCSI3 13/enclosure
services fixed t10.DP_BACKPLANE000000
ppb3 at pci0 dev 5 function 0 "Intel X58 PCIE" rev 0x13: msi
pci4 at ppb3 bus 4
ppb4 at pci0 dev 6 function 0 "Intel X58 PCIE" rev 0x13: msi
pci5 at ppb4 bus 5
ix0 at pci5 dev 0 function 0 "Intel 10GbE SR Dual (82598AF)" rev 0x01:
msi, address 00:1b:21:3f:f0:e3
ix1 at pci5 dev 0 function 1 "Intel 10GbE SR Dual (82598AF)" rev 0x01:
msi, address 00:1b:21:3f:f0:e2
ppb5 at pci0 dev 7 function 0 "Intel X58 PCIE" rev 0x13: msi
pci6 at ppb5 bus 6
ix2 at pci6 dev 0 function 0 "Intel 10GbE SR Dual (82598AF)" rev 0x01:
msi, address 00:1b:21:41:b3:43
ix3 at pci6 dev 0 function 1 "Intel 10GbE SR Dual (82598AF)" rev 0x01:
msi, address 00:1b:21:41:b3:42
ppb6 at pci0 dev 9 function 0 "Intel X58 PCIE" rev 0x13: msi
pci7 at ppb6 bus 7
ix4 at pci7 dev 0 function 0 "Intel 10GbE LR (82598EB)" rev 0x01: msi,
address 00:1b:21:3f:b6:02
"Intel X58 Misc" rev 0x13 at pci0 dev 20 function 0 not configured
"Intel X58 GPIO" rev 0x13 at pci0 dev 20 function 1 not configured
"Intel X58 RAS" rev 0x13 at pci0 dev 20 function 2 not configured
uhci0 at pci0 dev 26 function 0 "Intel 82801I USB" rev 0x02: apic 0 int 17
uhci1 at pci0 dev 26 function 1 "Intel 82801I USB" rev 0x02: apic 0 int 18
ehci0 at pci0 dev 26 function 7 "Intel 82801I USB" rev 0x02: apic 0 int 19
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
uhci2 at pci0 dev 29 function 0 "Intel 82801I USB" rev 0x02: apic 0 int 21
uhci3 at pci0 dev 29 function 1 "Intel 82801I USB" rev 0x02: apic 0 int 20
ehci1 at pci0 dev 29 function 7 "Intel 82801I USB" rev 0x02: apic 0 int 21
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb7 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0x92
pci8 at ppb7 bus 8
vga1 at pci8 dev 3 function 0 "Matrox MGA G200eW" rev 0x0a
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
pcib0 at pci0 dev 31 function 0 "Intel 82801IB LPC" rev 0x02
pciide0 at pci0 dev 31 function 2 "Intel 82801I SATA" rev 0x02: DMA,
channel 0 configured to native-PCI, channel 1 configure
d to native-PCI
pciide0: using apic 0 int 23 for native-PCI interrupt
atapiscsi0 at pciide0 channel 0 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <TEAC, DVD-ROM DV28SV, D.0K> ATAPI 5/cdrom
removable
cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
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
isa0 at pcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com1 at isa0 port 0x2f8/8 irq 3: 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
uhub6 at uhub0 port 3 "Standard Microsystems product 0x2514" rev
2.00/0.00 addr 2
uhidev0 at uhub4 port 1 configuration 1 interface 0 "Avocent Dell
03R874" rev 1.10/1.00 addr 2
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 variable keys, 6 key codes, country code 33
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
uhidev1 at uhub4 port 1 configuration 1 interface 1 "Avocent Dell
03R874" rev 1.10/1.00 addr 2
uhidev1: iclass 3/1, 3 report ids
ums0 at uhidev1 reportid 1: 5 buttons, Z dir
wsmouse0 at ums0 mux 0
uhid0 at uhidev1 reportid 2: input=2, output=0, feature=0
uhid1 at uhidev1 reportid 3: input=1, output=0, feature=0
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (91d0defb08274310.a) swap on sd0b dump on sd0b
bnx0: address 00:26:b9:36:ee:fa
brgphy0 at bnx0 phy 1: BCM5709 10/100/1000baseT PHY, rev. 8
bnx1: address 00:26:b9:36:ee:fc
brgphy1 at bnx1 phy 1: BCM5709 10/100/1000baseT PHY, rev. 8
bnx2: address 00:26:b9:36:ee:fe
brgphy2 at bnx2 phy 1: BCM5709 10/100/1000baseT PHY, rev. 8
bnx3: address 00:26:b9:36:ef:00
brgphy3 at bnx3 phy 1: BCM5709 10/100/1000baseT PHY, rev. 8
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33152
priority: 0
groups: lo
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x7
inet 127.0.0.1 netmask 0xff000000
ix0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
lladdr 00:1b:21:3f:f0:e3
priority: 0
media: Ethernet autoselect
status: no carrier
ix1: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST>
mtu 9000
lladdr 00:1b:21:3f:f0:e2
priority: 0
media: Ethernet autoselect (10GbaseSR full-duplex)
status: active
inet6 fe80::21b:21ff:fe3f:f0e2%ix1 prefixlen 64 scopeid 0x2
ix2: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST>
mtu 9000
lladdr 00:1b:21:41:b3:43
priority: 0
media: Ethernet autoselect (10GbaseSR full-duplex)
status: active
inet 172.16.3.253 netmask 0xffffff00 broadcast 172.16.3.255
inet6 fe80::21b:21ff:fe41:b343%ix2 prefixlen 64 scopeid 0x3
ix3: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST>
mtu 9000
lladdr 00:1b:21:41:b3:42
priority: 0
media: Ethernet autoselect (10GbaseSR full-duplex)
status: active
inet 172.16.145.253 netmask 0xfffffe00 broadcast 172.16.145.255
inet6 fe80::21b:21ff:fe41:b342%ix3 prefixlen 64 scopeid 0x4
ix4: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST>
mtu 9000
lladdr 00:1b:21:3f:b6:02
priority: 0
groups: egress
media: Ethernet autoselect (10GbaseLR full-duplex)
status: active
inet 172.16.254.77 netmask 0xfffffff8 broadcast 172.16.254.79
inet6 fe80::21b:21ff:fe3f:b602%ix4 prefixlen 64 scopeid 0x5
enc0: flags=0<>
priority: 0
groups: enc
status: active
bnx0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
lladdr 00:26:b9:36:ee:fa
priority: 0
media: Ethernet autoselect (1000baseT full-duplex)
status: active
inet 192.168.10.253 netmask 0xffffff00 broadcast 192.168.10.255
inet6 fe80::226:b9ff:fe36:eefa%bnx0 prefixlen 64 scopeid 0x8
bnx1:
flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> mtu 1500
lladdr 00:26:b9:36:ee:fc
priority: 0
media: Ethernet autoselect (1000baseT full-duplex)
status: active
inet 172.16.242.125 netmask 0xffffff80 broadcast 172.16.242.127
inet6 fe80::226:b9ff:fe36:eefc%bnx1 prefixlen 64 scopeid 0x9
bnx2: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
lladdr 00:26:b9:36:ee:fe
priority: 0
media: Ethernet autoselect (none)
status: no carrier
bnx3:
flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> mtu 1500
lladdr 00:26:b9:36:ef:00
priority: 0
media: Ethernet autoselect (1000baseT full-duplex)
status: active
inet 172.16.254.66 netmask 0xfffffff8 broadcast 172.16.254.71
inet6 fe80::226:b9ff:fe36:ef00%bnx3 prefixlen 64 scopeid 0xb
lo1: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33152
priority: 0
groups: lo
inet6 fe80::1%lo1 prefixlen 64 scopeid 0xc
inet 172.16.242.129 netmask 0xffffffff
pfsync0: flags=41<UP,RUNNING> mtu 1500
priority: 0
pfsync: syncdev: bnx0 syncpeer: 192.168.10.254 maxupd: 128
defer: off
groups: carp pfsync
pflog0: flags=141<UP,RUNNING,PROMISC> mtu 33152
priority: 0
groups: pflog
--
-- John Jasen (jja...@realityfailure.org)
--
