Hi,
if I understand you correctly your testing consists of up and downloads
on your openbsd router. This is not the proper way to test network
performance on a router. I recommend using tools that dont involve any
i/o operations such as netperf etc.
According to your dmesg I wouldn't be surprised if you're issues are
harddrive related.
greets, sebastian
Am Dienstag, den 14.02.2006, 11:16 +0100 schrieb Joachim Mathes:
> Hi OpenBSD community!
>
> I built a small ethernet network with Windows and Linux boxes and an
> OpenBSD router which is connected to the www via dsl.
>
> The problem is that the upload speed from an intranet box to the BSD
> server (over scp for example) is quite ok (about 13 MBit/s) but the
> download speed is rather slow (about 1 MBit/s). Why?
>
> I used ethereal to get a tcp dump and plottet the results (x-axis ->
> time, y-axis -> number of bytes). For about a second I get full download
> speed but then there is a period of 15 seconds where the connection
> seems to be stalled. After 15 seconds the connection works for 1 second
> at full speed and so on. As a result the diagram looks like a stair.
>
> Now I'm going to tell you what I have tried to solve the
> problem...without any success.
>
> - samba shows the same behaviour
> - disconnected the switch (100Mbit) and made a direct connection to the
> server
> - changed RJ45 cable
> - switched network cards from Realtek 8139 (100Mbit) to Realtek 8029 (10Mbit;
> works fine for pppoe) (I know they are of poor quality!)
> - changed media type manually from 100baseTX full duplex to 100baseTX to
> 10baseT full duplex to 10baseT
> - killed pf; killed ppp
> - processor load is ok during download
> - same behaviour if server is accessed from a windows or a linux box
> (both of them have 100Mbit NICs)
>
> I have found some old threads (OpenBSD 2.x) concerning the same problem
> but not any solution up to now. So if you have any further idea, please
> tell me.
>
> Thanks in advance!
>
> Jo
>
> dmesg:
> ---------------------------------------------------------------------------
> 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 II ("GenuineIntel" 686-class, 512KB L2 cache) 401 MHz
> cpu0:
> FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR
> real mem = 267952128 (261672K)
> avail mem = 237731840 (232160K)
> using 3296 buffers containing 13500416 bytes (13184K) of memory
> mainbus0 (root)
> bios0 at mainbus0: AT/286+(26) BIOS, date 01/11/01, BIOS32 rev. 0 @ 0xfb130
> apm0 at bios0: Power Management spec V1.2
> apm0: AC on, battery charge unknown
> pcibios0 at bios0: rev 2.1 @ 0xf0000/0xb5ac
> pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdbf0/144 (7 entries)
> pcibios0: PCI Exclusive IRQs: 10 11
> pcibios0: PCI Interrupt Router at 000:07:0 ("VIA VT82C596A ISA" rev 0x00)
> pcibios0: PCI bus #1 is the last bus
> bios0: ROM list: 0xc0000/0xc800
> cpu0 at mainbus0
> pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
> pchb0 at pci0 dev 0 function 0 "VIA VT82C691 PCI" rev 0x06
> ppb0 at pci0 dev 1 function 0 "VIA VT82C598 AGP" rev 0x00
> pci1 at ppb0 bus 1
> vga1 at pci1 dev 0 function 0 "Nvidia GeForce2 MX" rev 0xb2
> wsdisplay0 at vga1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> pcib0 at pci0 dev 7 function 0 "VIA VT82C596A ISA" rev 0x07
> pciide0 at pci0 dev 7 function 1 "VIA VT82C571 IDE" rev 0x06: ATA33, channel
> 0 configured to compatibility, channel 1 configured to compatibility
> wd0 at pciide0 channel 0 drive 0: <Maxtor 54098H8>
> wd0: 16-sector PIO, LBA, 39082MB, 80041248 sectors
> wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
> atapiscsi0 at pciide0 channel 1 drive 0
> scsibus0 at atapiscsi0: 2 targets
> cd0 at scsibus0 targ 0 lun 0: <LG, CD-ROM CRD-8400B, 1.00> SCSI0 5/cdrom
> removable
> cd0(pciide0:1:0): using PIO mode 4, DMA mode 2
> "VIA VT82C596 Power Mgmt" rev 0x00 at pci0 dev 7 function 3 not configured
> ne3 at pci0 dev 11 function 0 "Realtek 8029" rev 0x00: irq 10
> ne3: address 00:00:1c:0b:4c:54
> rl0 at pci0 dev 12 function 0 "Realtek 8139" rev 0x10: irq 11 address
> 00:30:84:41:d6:e1
> rlphy0 at rl0 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
> 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
> 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
> sb1 at isapnp0 "Analog Devices AD1816A, ADS7180, , " port
> 0x220/16,0x388/4,0x500/16 irq 5 drq 1,0: dsp v3.02
> midi1 at sb1: <SB MIDI UART>
> audio0 at sb1
> opl0 at sb1: model OPL3
> midi2 at opl0: <SB Yamaha OPL3>
> mpu0 at isapnp0 "Analog Devices AD1816A, ADS7181, PNPB006, " port 0x300/2 irq
> 9
> mpu0: Analog Devices AD1816A
> midi3 at mpu0: <MPU-401 MIDI UART>
> joy0 at isapnp0 "Analog Devices AD1816A, ADS7182, PNPB02F, " port 0x200/8
> biomask f145 netmask fd45 ttymask fdc7
> pctr: 686-class user-level performance counters enabled
> mtrr: Pentium Pro MTRR support
> dkcsum: wd0 matched BIOS disk 80
> root on wd0a
> rootdev=0x0 rrootdev=0x300 rawdev=0x302
> wd0(pciide0:0:0): timeout
> type: ata
> c_bcount: 512
> c_skip: 0
> wd0e: DMA error writing fsbn 2651200 of 2651200-2651211 (wd0 bn 3819472; cn
> 3789 tn 2 sn 34), retrying
> wd0: soft error (corrected)
> wd0(pciide0:0:0): timeout
> type: ata
> c_bcount: 0
> c_skip: 0
> wd0(pciide0:0:0): timeout
> type: ata
> c_bcount: 512
> c_skip: 0
> wd0(pciide0:0:0): timeout
> type: ata
> c_bcount: 8192
> c_skip: 0
> wd0e: device timeout writing fsbn 2651200 of 2651200-2651215 (wd0 bn 3819472;
> cn 3789 tn 2 sn 34), retrying
> wd0: soft error (corrected)
> wd0(pciide0:0:0): timeout
> type: ata
> c_bcount: 512
> c_skip: 0
>
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