We have an OpenBSD 3.8 firewall that has been in production for the
last six months. Until the last week or two, everything has been
great. Recently while diagnosing a problem with the bonded T1 pair,
I noticed the following error while pinging the gateway:
ping: sendto: No buffer space available
This always coincided with a very high spike (1000-3000ms) in
latency, which would usually go back down to ~0ms and operate
normally. The interface in question is an Intel em connected to a
Cisco 2950 trunk. The other two interfaces (em1, sk0) are working
fine. The LAN interface (em1) pushes *much* more data, as it routes
between 13 internal VLANs. I've also had another box perform the
same ping test concurrently to confirm this isn't a problem with the
gateway.
I've seen other posts in the misc@ archives for this error, but the
only solutions were patches to OpenBSD 3.7 or specific non-em drivers
(xl, fxp). Does anyone have an idea what might be causing this?
OpenBSD 3.8 (GENERIC) #138: Sat Sep 10 15:41:37 MDT 2005
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Celeron(R) CPU 2.60GHz ("GenuineIntel" 686-class) 2.60
GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,
CFLUSH,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,CNXT-ID
real mem = 266838016 (260584K)
avail mem = 236597248 (231052K)
using 3282 buffers containing 13443072 bytes (13128K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(8b) BIOS, date 03/09/05, BIOS32 rev. 0 @
0xfb770
apm0 at bios0: Power Management spec V1.2
apm0: AC on, battery charge unknown
apm0: flags 70102 dobusy 1 doidle 1
pcibios0 at bios0: rev 2.1 @ 0xf0000/0xdf64
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfde80/224 (12 entries)
pcibios0: PCI Exclusive IRQs: 5 9 10 11
pcibios0: no compatible PCI ICU found: ICU vendor 0x8086 product 0x25a1
pcibios0: PCI bus #3 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1000 0xc9000/0x1000
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82875P Host" rev 0x02
ppb0 at pci0 dev 3 function 0 "Intel 82875P PCI-CSA" rev 0x02
pci1 at ppb0 bus 1
em0 at pci1 dev 1 function 0 "Intel PRO/1000CT (82547GI)" rev 0x00:
irq 5, address: 00:30:48:84:ac:3c
ppb1 at pci0 dev 28 function 0 "Intel 6300ESB PCIX" rev 0x02
pci2 at ppb1 bus 2
skc0 at pci2 dev 1 function 0 "Schneider & Koch SK-9821 v2.0" rev
0x20: irq 9
skc0: Marvell Yukon (0x1)
sk0 at skc0 port A: address 00:00:5a:9f:31:b4
eephy0 at sk0 phy 0: Marvell 88E1011 Gigabit PHY, rev. 3
uhci0 at pci0 dev 29 function 0 "Intel 6300ESB USB" rev 0x02: irq 10
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1 at pci0 dev 29 function 1 "Intel 5300ESB USB" rev 0x02: irq 11
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
"Intel 6300ESB WDT" rev 0x02 at pci0 dev 29 function 4 not configured
"Intel 6300ESB APIC" rev 0x02 at pci0 dev 29 function 5 not configured
ehci0 at pci0 dev 29 function 7 "Intel 6300ESB USB" rev 0x02: irq 9
usb2 at ehci0: USB revision 2.0
uhub2 at usb2
uhub2: Intel EHCI root hub, rev 2.00/1.00, addr 1
uhub2: 4 ports with 4 removable, self powered
ppb2 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0x0a
pci3 at ppb2 bus 3
vga1 at pci3 dev 9 function 0 "ATI Rage XL" rev 0x27
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
em1 at pci3 dev 10 function 0 "Intel PRO/1000MT (82541GI)" rev 0x00:
irq 11, address: 00:30:48:84:ac:3d
ichpcib0 at pci0 dev 31 function 0 "Intel 6300ESB LPC" rev 0x02
pciide0 at pci0 dev 31 function 1 "Intel 6300ESB IDE" rev 0x02: DMA,
channel 0 configured to compatibility, channel 1 configured to
compatibility
pciide0: channel 0 disabled (no drives)
wd0 at pciide0 channel 1 drive 0: <SanDisk SDCFB-512>
wd0: 4-sector PIO, LBA, 488MB, 1000944 sectors
wd0(pciide0:1:0): using PIO mode 4
"Intel 6300ESB SMBus" rev 0x02 at pci0 dev 31 function 3 not configured
isa0 at ichpcib0
isadma0 at isa0
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
pmsi0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pmsi0 mux 0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
lm0 at isa0 port 0x290/8: W83627HF
npx0 at isa0 port 0xf0/16: using exception 16
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
biomask ef45 netmask ef65 ttymask ffe7
pctr: user-level cycle counter enabled
dkcsum: wd0 matches BIOS drive 0x80
root on wd0a
rootdev=0x0 rrootdev=0x300 rawdev=0x302
--
Jason Dixon
DixonGroup Consulting
http://www.dixongroup.net
