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



--On 18. december 2005 1:33 -0800 Ted Mittelstaedt <tedm@xxxxxxxxxxxxxxxx> wrote:



-----Original Message-----
From: Sasa Stupar [mailto:sasa@xxxxxxxxxxxxxxxxxxxx]
Sent: Friday, December 16, 2005 5:25 AM
To: Ted Mittelstaedt; danial_thom@xxxxxxxxx; Drew Tomlinson
Cc: freebsd-questions@xxxxxxxxxxx
Subject: RE: Polling For 100 mbps Connections? (Was Re: Freebsd
Theme Song)




--On 16. december 2005 3:36 -0800 Ted Mittelstaedt
<tedm@xxxxxxxxxxxxxxxx>
wrote:



-----Original Message-----
From: Sasa Stupar [mailto:sasa@xxxxxxxxxxxxxxxxxxxx]
Sent: Thursday, December 15, 2005 12:34 AM
To: Ted Mittelstaedt; danial_thom@xxxxxxxxx; Drew Tomlinson
Cc: freebsd-questions@xxxxxxxxxxx
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@xxxxxxxxxxxxxxx:/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
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