I had set up ALTQ on a 4.9 firewall box as a box in our network needed
its sending throttled, but I noticed that while the firewall was
throttling this machine in question, ALL connections going through the
machine were adversely affected and slow. Interactive SSH sessions had
sometimes 1-2 seconds up to 10 seconds before keystrokes showed up.
Once the machine had stopped sending all its traffic, things were fine
again.
I am not sure if the hotplug ppb and em(4) / bge(4) issue of shared
interrupts could be applied here or not. The box happily forwards
traffic without lag if I turn ALTQ off on it. However, this is not
an option as we cannot go past 100 megabits on our connection.
I also noticed I had to jack qlimit up to 8000 to stop getting lots of
packets being dropped.
Machine is a Dell PowerEdge R210. It's running amd64. I tried i386 on it
and it was unstable, so switched it to amd64.
Yes, it has ipmi enabled, but ipmi does not appear to cause any issues.
It's only when ALTQ is enabled.
Any ideas? Would this stuff be fixed in -current? I'd try -current on
it, but need to convince management.
Thanks,
Tom
The altq line in /etc/pf.conf:
altq on em0 priq bandwidth 95Mb qlimit 8000 queue { bulk, std, mail,
ssh, web, vpn, dns, ack }
dmesg:
OpenBSD 4.9 (GENERIC.MP) #794: Wed Mar 2 07:19:02 MST 2011
dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC.MP
cpu0: Intel(R) Core(TM)2 Duo CPU E4500 @ 2.20GHz ("GenuineIntel"
686-class) 2.21 GHz
cpu0:
FPU,V86,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,EST,TM2,SSSE3,CX16,xTPR,PDCM
real mem = 1071947776 (1022MB)
avail mem = 1044254720 (995MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 10/24/07, BIOS32 rev. 0 @ 0xfadd0,
SMBIOS rev. 2.5 @ 0x3ff9c000 (46 entries)
bios0: vendor Dell Inc. version "1.0.0" date 10/24/2007
bios0: Dell Inc. PowerEdge R200
acpi0 at bios0: rev 2
acpi0: sleep states S0 S4 S5
acpi0: tables DSDT FACP APIC SPCR HPET MCFG WD__ SLIC ERST HEST BERT
EINJ SSDT SSDT SSDT
acpi0: wakeup devices PCI0(S5)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: apic clock running at 200MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM)2 Duo CPU E4500 @ 2.20GHz ("GenuineIntel"
686-class) 2.21 GHz
cpu1:
FPU,V86,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,EST,TM2,SSSE3,CX16,xTPR,PDCM
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 0, remapped to apid 2
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 (SBE0)
acpiprt3 at acpi0: bus 3 (SBE4)
acpiprt4 at acpi0: bus 4 (SBE5)
acpiprt5 at acpi0: bus 5 (COMP)
acpicpu0 at acpi0: PSS
acpicpu1 at acpi0: PSS
bios0: ROM list: 0xc0000/0x9000 0xec000/0x4000!
ipmi0 at mainbus0: version 1.5 interface KCS iobase 0xca8/8 spacing 4
cpu0: Enhanced SpeedStep 2201 MHz: speeds: 2200, 2000, 1800, 1600, 1400,
1200 MHz
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 3200/3210 Host" rev 0x01
ppb0 at pci0 dev 1 function 0 "Intel 3200/3210 PCIE" rev 0x01: apic 2
int 16 (irq 15)
pci1 at ppb0 bus 1
ppb1 at pci0 dev 28 function 0 "Intel 82801I PCIE" rev 0x02: apic 2 int
16 (irq 15)
pci2 at ppb1 bus 2
em0 at pci2 dev 0 function 0 "Intel PRO/1000 PT (82571EB)" rev 0x06:
apic 2 int 16 (irq 15), address 00:15:17:6c:c7:a2
em1 at pci2 dev 0 function 1 "Intel PRO/1000 PT (82571EB)" rev 0x06:
apic 2 int 17 (irq 14), address 00:15:17:6c:c7:a3
ppb2 at pci0 dev 28 function 4 "Intel 82801I PCIE" rev 0x02
pci3 at ppb2 bus 3
bge0 at pci3 dev 0 function 0 "Broadcom BCM5721" rev 0x21, BCM5750 C1
(0x4201): apic 2 int 16 (irq 15), address 00:19:b9:fa:59:20
brgphy0 at bge0 phy 1: BCM5750 10/100/1000baseT PHY, rev. 0
ppb3 at pci0 dev 28 function 5 "Intel 82801I PCIE" rev 0x02
pci4 at ppb3 bus 4
bge1 at pci4 dev 0 function 0 "Broadcom BCM5721" rev 0x21, BCM5750 C1
(0x4201): apic 2 int 17 (irq 14), address 00:19:b9:fa:59:21
brgphy1 at bge1 phy 1: BCM5750 10/100/1000baseT PHY, rev. 0
uhci0 at pci0 dev 29 function 0 "Intel 82801I USB" rev 0x02: apic 2 int
21 (irq 11)
uhci1 at pci0 dev 29 function 1 "Intel 82801I USB" rev 0x02: apic 2 int
20 (irq 10)
uhci2 at pci0 dev 29 function 2 "Intel 82801I USB" rev 0x02: apic 2 int
21 (irq 11)
ehci0 at pci0 dev 29 function 7 "Intel 82801I USB" rev 0x02: apic 2 int
21 (irq 11)
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb4 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0x92
pci5 at ppb4 bus 5
vga1 at pci5 dev 5 function 0 "ATI ES1000" rev 0x02
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
radeondrm0 at vga1: apic 2 int 19 (irq 5)
drm0 at radeondrm0
ichpcib0 at pci0 dev 31 function 0 "Intel 82801IR LPC" rev 0x02: PM
disabled
pciide0 at pci0 dev 31 function 2 "Intel 82801I SATA" rev 0x02: DMA,
channel 0 configured to native-PCI, channel 1 configured to native-PCI
pciide0: using apic 2 int 23 (irq 6) for native-PCI interrupt
wd0 at pciide0 channel 0 drive 0: <WDC WD1601ABYS-18C0A0>
wd0: 16-sector PIO, LBA48, 152587MB, 312500000 sectors
atapiscsi0 at pciide0 channel 0 drive 1
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <HL-DT-ST, CDRW/DVD GCCT10N, A102> ATAPI
5/cdrom removable
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 6
cd0(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 2
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at ichpcib0
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
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
mtrr: Pentium Pro MTRR support
uhub4 at uhub0 port 5 "Cypress Semiconductor USB2 Hub" rev 2.00/0.0b
addr 2
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
root on wd0a swap on wd0b dump on wd0b
