Polling For 100 mbps Connections? (Was Re: Freebsd Theme Song)

[Sasa Stupar]

--On 18. december 2005 1:33 -0800 Ted Mittelstaedt <tedm at toybox.placo.com> 
wrote:

>
>
>> -----Original Message-----
>> From: Sasa Stupar [mailto:sasa at stupar.homelinux.net]
>> Sent: Friday, December 16, 2005 5:25 AM
>> To: Ted Mittelstaedt; danial_thom at yahoo.com; Drew Tomlinson
>> Cc: freebsd-questions at freebsd.org
>> Subject: RE: Polling For 100 mbps Connections? (Was Re: Freebsd
>> Theme Song)
>>
>>
>>
>>
>> --On 16. december 2005 3:36 -0800 Ted Mittelstaedt
>> <tedm at toybox.placo.com>
>> wrote:
>>
>>>
>>>
>>>> -----Original Message-----
>>>> From: Sasa Stupar [mailto:sasa at stupar.homelinux.net]
>>>> Sent: Thursday, December 15, 2005 12:34 AM
>>>> To: Ted Mittelstaedt; danial_thom at yahoo.com; Drew Tomlinson
>>>> Cc: freebsd-questions at freebsd.org
>>>> Subject: RE: Polling For 100 mbps Connections? (Was Re: Freebsd
>>>> Theme Song)
>>>>
>>>>>
>>>>> Ted
>>>>
>>>> Hmmm, here is test with iperf what I have done with and
>> without polling:
>>>> **************
>>>> ------------------------------------------------------------
>>>> Client connecting to 192.168.1.200, TCP port 5001
>>>> TCP window size: 8.00 KByte (default)
>>>> ------------------------------------------------------------
>>>> [1816] local 192.168.10.249 port 1088 connected with
>>>> 192.168.1.200 port 5001
>>>> [ ID] Interval       Transfer     Bandwidth
>>>> [1816]  0.0-10.0 sec   108 MBytes  90.1 Mbits/sec
>>>>
>>>> This is when I use Device polling option on m0n0.
>>>>
>>>> If I disable this option then my transfer is worse:
>>>> ------------------------------------------------------------
>>>> Client connecting to 192.168.1.200, TCP port 5001
>>>> TCP window size: 8.00 KByte (default)
>>>> ------------------------------------------------------------
>>>> [1816] local 192.168.10.249 port 1086 connected with
>>>> 192.168.1.200 port 5001
>>>> [ ID] Interval       Transfer     Bandwidth
>>>> [1816]  0.0-10.0 sec  69.7 MBytes  58.4 Mbits/sec
>>>> ***************
>>>>
>>>> BTW: my router is m0n0wall (FBSD 4.11).
>>>>
>>>
>>> what are the cpu speeds and operating systems of all devices
>>> in the packet path, what is the make and model of switchs in
>>> use, provide dmesg output of the bsd box, a network diagram
>>> of the setup, etc. etc. etc.
>>>
>>> The above test results are not replicatable and thus, worthless.
>>> Useful test results would allow a reader to build an exact
>>> duplicate of your setup, config it identically, and get identical
>>> results.
>>>
>>> Ted
>>>
>>
>> OK. The server (192.168.1.200) is FreeBSD 5.4 with Duron 900 and 3C905C
>
> The 3com 3c905 is not a very good card under FreeBSD the driver was
> written
> without support from 3com and is shakey on a lot of hardware.  I would
> say
> there's a big question that your server is actually saturating the
> ethernet.
> Probably that is why your only getting 90Mbt.
>
>> NIC; router is m0n0wall (FreeBSD 4.11) with three Intel
>> Pro/100S Nics and
>> Celeron 433; The user computer (192.168.10.249) is Celeron 2400
>> with winxp
>> and integrated NIC Realtek 8139 series. Switch is CNET CNSH-1600.
>>
>
> Once again, the winxp+realtek 8139 is not a particularly steller combo,
> I would question that this system could saturate the ethernet, either.
>
>> Diagram: <http://me.homelinux.net/network.pdf>
>>
>> dmesg from the router:
>> ----------------
>> $ dmesg
>> Copyright (c) 1992-2005 The FreeBSD Project.
>> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>> The Regents of the University of California. All rights reserved.
>> FreeBSD 4.11-RELEASE-p11 #0: Wed Sep  7 13:49:09 CEST 2005
>>    root at fb411.neon1.net:/usr/src/sys/compile/M0N0WALL_GENERIC
>> Timecounter "i8254"  frequency 1193182 Hz
>> CPU: Pentium II/Pentium II Xeon/Celeron (434.32-MHz 686-class CPU)
>>  Origin = "GenuineIntel"  Id = 0x665  Stepping = 5
>>
>> Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,P
>> GE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
>> real memory  = 201326592 (196608K bytes)
>> avail memory = 179142656 (174944K bytes)
>> Preloaded elf kernel "kernel" at 0xc1006000.
>> Preloaded mfs_root "/mfsroot" at 0xc100609c.
>> Pentium Pro MTRR support enabled
>> md0: Preloaded image </mfsroot> 11534336 bytes at 0xc0504d9c
>> md1: Malloc disk
>> Using $PIR table, 8 entries at 0xc00fdef0
>> npx0: <math processor> on motherboard
>> npx0: INT 16 interface
>> pcib0: <Intel 82443BX (440 BX) host to PCI bridge> on motherboard
>> pci0: <PCI bus> on pcib0
>> pcib1: <Intel 82443BX (440 BX) PCI-PCI (AGP) bridge> at device
>> 1.0 on pci0
>> pci1: <PCI bus> on pcib1
>> isab0: <Intel 82371AB PCI to ISA bridge> at device 7.0 on pci0
>> isa0: <ISA bus> on isab0
>> atapci0: <Intel PIIX4 ATA33 controller> port 0xf000-0xf00f at
>> device 7.1 on
>> pci0
>> ata0: at 0x1f0 irq 14 on atapci0
>> ata1: at 0x170 irq 15 on atapci0
>> uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port
>> 0xd000-0xd01f irq 11
>> at device 7.2 on pci0
>> usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
>> usb0: USB revision 1.0
>> uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
>> uhub0: 2 ports with 2 removable, self powered
>> chip1: <Intel 82371AB Power management controller> port
>> 0x5000-0x500f at
>> device 7.3 on pci0
>> pci0: <unknown card> (vendor=0x1274, dev=0x1371) at 8.0 irq 11
>> fxp0: <Intel 82550 Pro/100 Ethernet> port 0xd800-0xd83f mem
>> 0xd0400000-0xd041ffff,0xd0460000-0xd0460fff irq 10 at device
>> 15.0 on pci0
>> fxp0: Ethernet address 00:02:b3:62:f6:06
>> inphy0: <i82555 10/100 media interface> on miibus0
>> inphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
>> fxp1: <Intel 82550 Pro/100 Ethernet> port 0xdc00-0xdc3f mem
>> 0xd0420000-0xd043ffff,0xd0462000-0xd0462fff irq 12 at device
>> 16.0 on pci0
>> fxp1: Ethernet address 00:02:b3:9c:2a:16
>> inphy1: <i82555 10/100 media interface> on miibus1
>> inphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
>> fxp2: <Intel 82550 Pro/100 Ethernet> port 0xe000-0xe03f mem
>> 0xd0440000-0xd045ffff,0xd0461000-0xd0461fff irq 7 at device 19.0 on pci0
>> fxp2: Ethernet address 00:02:b3:8c:e4:f6
>> inphy2: <i82555 10/100 media interface> on miibus2
>> inphy2:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
>> pmtimer0 on isa0
>> fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq
>> 2 on isa0
>> fdc0: FIFO enabled, 8 bytes threshold
>> fd0: <1440-KB 3.5" drive> on fdc0 drive 0
>> atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
>> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
>> sio0: type 16550A, console
>> sio1: configured irq 3 not in bitmap of probed irqs 0
>> BRIDGE 020214 loaded
>> IPsec: Initialized Security Association Processing.
>> IP Filter: v3.4.35 initialized.  Default = block all, Logging = enabled
>> ad0: 3098MB <WDC AC33200L> [6296/16/63] at ata0-master PIO4
>> acd0: CDROM <LITE-ON CD-ROM LTN-527T> at ata1-master PIO4
>> Mounting root from ufs:/dev/md0c
>> fxp1: Microcode loaded, int_delay: 1000 usec  bundle_max: 6
>> fxp0: Microcode loaded, int_delay: 1000 usec  bundle_max: 6
>> fxp2: Microcode loaded, int_delay: 1000 usec  bundle_max: 6
>> ata0: resetting devices .. done
>> -------------
>>
>> If you need more just ask for it. You don't need to be angry. Peace.
>>
>
> OK, next question:
>
> ftp transfer like this uses large packets, rerun the test with ping -f
> with different ping packet sizes, post the results.
>
> Remember, routers have to deal with many sized packets.
>
> Ted
>

Interesting. I have tested like you've said and I could ping with packet 
size 1450 bytes. Everything bigger is telling that "packet must be 
fragmented but DF is set up". This is of course pinging from winxp to 
server. Times until size 1450 bytes are <= 1 ms TTL 63 ms. Sorry for not 
posting the results but my winxp are in my native language and not in 
english.

-- 
Sasa Stupar