Date: Mon, 07 Aug 2000 14:23:57 -0700 From: David Greenman <dg@root.com> To: System Administrator <admin@chemcomp.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Ethernet "long event" error frames with FBSD machines Message-ID: <200008072123.OAA04143@implode.root.com> In-Reply-To: Your message of "Mon, 07 Aug 2000 17:19:19 EDT." <398F27D7.4DB5E070@chemcomp.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Sounds like the duplex is set wrong. Try setting both sides for 10/full. -DG David Greenman Co-founder, The FreeBSD Project - http://www.freebsd.org Manufacturer of high-performance Internet servers - http://www.terasolutions.com Pave the road of life with opportunities. >I have a few FreeBSD machines installed on our local network here, and >they seem to perform very badly when doing large TCP transfers (e.g. >FTP). All machines are connected on a 10baseT/UTP network using a switch >(3Com SuperStackII Desktop Switch). But tests using nttcp give me >readings that are quite bad. The maximum bandwidth I can reach using TCP >is 1Mb/s. UDP tests are performing a lot better, giving 9 to 10Mb/s >transfers. > >After investigation on the switch's console, I see that the 3 FBSD >machines that I have on the network generate "long events" error that >are described in 3com's manual as: > >Late Events: This counter is incremented by one >each time a collision occurs after the valid packet >minimum time. A late event is an out- of- window >collision that may occur if your Ethernet LAN >exceeds the maximum size as defined in the IEEE >standard. A late event is also counted as a collision. > >I seem to be missing something here. No other machine on our network >behave so badly. I would really like to have advice on this, because it >may be the turning point of the mere presence of FreeBSD on our network. >I cannot reproduce the behavior on any other machine that FreeBSD >machines. > >What follows is the examples of the tests I ran, snapshot of the >Switch's console and my current kernel config. I run > >FreeBSD sky.chemcomp.com 4.0-RELEASE FreeBSD 4.0-RELEASE #8: Mon Aug 7 >12:25:44 EDT 2000 root@sky.chemcomp.com:/usr/src/sys/compile/SKY >i386 > >on all machines. > >Thanks, > >A. > >-- >$ nttcp -T -u earth > Bytes Real s CPU s Real-MBit/s CPU-MBit/s Calls Real-C/s >CPU-C/s >l 8388608 6.72 6.63 9.7553 9.8777 136258 20282.59 >20537.1 >1 8286208 7.01 0.21 9.2306 309.7061 2024 288.60 >9683.1 >$ nttcp -T earth > Bytes Real s CPU s Real-MBit/s CPU-MBit/s Calls Real-C/s >CPU-C/s >l 8388608 72.87 0.40 0.8994 163.4469 2048 28.11 >5107.7 >1 8388608 72.89 0.41 0.8991 160.3335 6121 83.98 >14975.0 >$ > >x Port ID: 10 >(10BASET) x >x >x >x >x >x >x >x Bandwidth Used: >7% x >x >x >x Frames Forwarded: >100% x >x >x >x Broadcast Frame Bandwidth: >0% x >x >x >x Error Frames: >8.85% x >-------------------------------------------------------------------------------- >x Port ID: 10 >(10BASET) x >x >x >x >x >x >x >x CRC Align Errors: >21 x >x Short Events: >408 x >x Late Events: >424103 x >x Long Frames: >0 x >x Jabbers: >0 x ># ># GENERIC -- Generic kernel configuration file for FreeBSD/i386 ># ># For more information on this file, please read the handbook section on ># Kernel Configuration Files: ># ># http://www.freebsd.org/handbook/kernelconfig-config.html ># ># The handbook is also available locally in /usr/share/doc/handbook ># if you've installed the doc distribution, otherwise always see the ># FreeBSD World Wide Web server (http://www.FreeBSD.ORG/) for the ># latest information. ># ># An exhaustive list of options and more detailed explanations of the ># device lines is also present in the ./LINT configuration file. If you >are ># in doubt as to the purpose or necessity of a line, check first in >LINT. ># ># $FreeBSD: src/sys/i386/conf/GENERIC,v 1.246 2000/03/09 16:32:55 jlemon >Exp $ > >machine i386 >cpu I586_CPU >ident SKY >maxusers 32 > >options CPU_FASTER_5X86_FPU > >makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols >options DDB #Kernel Debugger > >options MATH_EMULATE #Support for x87 emulation >options INET #InterNETworking >#options INET6 #IPv6 communications protocols > >options IPX > >options FFS #Berkeley Fast Filesystem >options FFS_ROOT #FFS usable as root device [keep this!] >options MFS #Memory Filesystem >#options MD_ROOT #MD is a potential root device >options NFS #Network Filesystem >options NFS_ROOT #NFS usable as root device, NFS required >options MSDOSFS #MSDOS Filesystem >options CD9660 #ISO 9660 Filesystem >options CD9660_ROOT #CD-ROM usable as root, CD9660 required >options PROCFS #Process filesystem >options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!] >options SCSI_DELAY=15000 #Delay (in ms) before probing SCSI >options UCONSOLE #Allow users to grab the console >options USERCONFIG #boot -c editor >options VISUAL_USERCONFIG #visual boot -c editor >options KTRACE #ktrace(1) support >options SYSVSHM #SYSV-style shared memory >options SYSVMSG #SYSV-style message queues >options SYSVSEM #SYSV-style semaphores >options P1003_1B #Posix P1003_1B real-time extentions >options _KPOSIX_PRIORITY_SCHEDULING >options ICMP_BANDLIM #Rate limit bad replies > >device isa >device eisa >device pci > ># Floppy drives >device fdc0 at isa? port IO_FD1 irq 6 drq 2 >device fd0 at fdc0 drive 0 >#device fd1 at fdc0 drive 1 > ># ATA and ATAPI devices >device ata0 at isa? port IO_WD1 irq 14 >device ata1 at isa? port IO_WD2 irq 15 >device ata >device atadisk # ATA disk drives >device atapicd # ATAPI CDROM drives >#device atapifd # ATAPI floppy drives >#device atapist # ATAPI tape drives >options ATA_STATIC_ID #Static device numbering >options ATA_ENABLE_ATAPI_DMA #Enable DMA on ATAPI devices > ># SCSI Controllers >#device ahb # EISA AHA1742 family >device ahc # AHA2940 and onboard AIC7xxx devices >#device amd # AMD 53C974 (Teckram DC-390(T)) >#device dpt # DPT Smartcache - See LINT for options! >#device isp # Qlogic family >#device ncr # NCR/Symbios Logic >#device sym # NCR/Symbios Logic (newer chipsets) > >#device adv0 at isa? >#device adw >#device bt0 at isa? >#device aha0 at isa? >#device aic0 at isa? > ># SCSI peripherals >device scbus # SCSI bus (required) >device da # Direct Access (disks) >device sa # Sequential Access (tape etc) >device cd # CD >device pass # Passthrough device (direct SCSI access) > ># RAID controllers >#device ida # Compaq Smart RAID >#device amr # AMI MegaRAID >#device mlx # Mylex DAC960 family > ># atkbdc0 controls both the keyboard and the PS/2 mouse >device atkbdc0 at isa? port IO_KBD >device atkbd0 at atkbdc? irq 1 >device psm0 at atkbdc? irq 12 > >device vga0 at isa? > ># splash screen/screen saver >pseudo-device splash > ># syscons is the default console driver, resembling an SCO console >device sc0 at isa? > ># Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver >#device vt0 at isa? >#options XSERVER # support for X server on a vt console >#options FAT_CURSOR # start with block cursor ># If you have a ThinkPAD, uncomment this along with the rest of the PCVT >lines >#options PCVT_SCANSET=2 # IBM keyboards are non-std > ># Floating point support - do not disable. >device npx0 at nexus? port IO_NPX irq 13 > ># Power management support (see LINT for more options) >device apm0 at nexus? disable flags 0x20 # Advanced Power Management > ># PCCARD (PCMCIA) support >#device card >#device pcic0 at isa? irq 10 port 0x3e0 iomem 0xd0000 >#device pcic1 at isa? irq 11 port 0x3e2 iomem 0xd4000 disable > ># Serial (COM) ports >device sio0 at isa? port IO_COM1 flags 0x10 irq 4 >device sio1 at isa? port IO_COM2 irq 3 >device sio2 at isa? disable port IO_COM3 irq 5 >#device sio3 at isa? disable port IO_COM4 irq 9 > ># Parallel port >device ppc0 at isa? irq 7 >device ppbus # Parallel port bus (required) >device lpt # Printer >device plip # TCP/IP over parallel >device ppi # Parallel port interface device >#device vpo0 # Zip, Requires scbus and da > ># PCI Ethernet NICs. >#device de # DEC/Intel DC21x4x (``Tulip'') >#device fxp # Intel EtherExpress PRO/100B (82557, 82558) >#device tx # SMC 9432TX (83c170 ``EPIC'') >#device vx # 3Com 3c590, 3c595 (``Vortex'') >#device wx # Intel Gigabit Ethernet Card (``Wiseman'') > ># PCI Ethernet NICs that use the common MII bus controller code. >device miibus # MII bus support >#device dc # DEC/Intel 21143 and various workalikes >#device rl # RealTek 8129/8139 >#device sf # Adaptec AIC-6915 (``Starfire'') >#device sis # Silicon Integrated Systems SiS 900/SiS 7016 >#device ste # Sundance ST201 (D-Link DFE-550TX) >#device tl # Texas Instruments ThunderLAN >device vr # VIA Rhine, Rhine II >#device wb # Winbond W89C840F >#device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'') > ># ISA Ethernet NICs. >#device ed0 at isa? port 0x280 irq 10 iomem 0xd8000 >#device ex >#device ep ># WaveLAN/IEEE 802.11 wireless NICs. Note: the WaveLAN/IEEE really ># exists only as a PCMCIA device, so there is no ISA attatement needed ># and resources will always be dynamically assigned by the pccard code. >#device wi ># Aironet 4500/4800 802.11 wireless NICs. Note: the declaration below >will ># work for PCMCIA and PCI cards, as well as ISA cards set to ISA PnP ># mode (the factory default). If you set the switches on your ISA ># card for a manually chosen I/O address and IRQ, you must specify ># those paremeters here. >#device an ># The probe order of these is presently determined by >i386/isa/isa_compat.c. >#device ie0 at isa? port 0x300 irq 10 iomem 0xd0000 >#device fe0 at isa? port 0x300 >#device le0 at isa? port 0x300 irq 5 iomem 0xd0000 >#device lnc0 at isa? port 0x280 irq 10 drq 0 >#device cs0 at isa? port 0x300 >#device sn0 at isa? port 0x300 irq 10 ># requires PCCARD (PCMCIA) support to be activated >#device xe0 at isa? > ># Pseudo devices - the number indicates how many units to allocated. >pseudo-device loop # Network loopback >pseudo-device ether # Ethernet support >#pseudo-device sl 1 # Kernel SLIP >#pseudo-device ppp 1 # Kernel PPP >pseudo-device tun # Packet tunnel. >pseudo-device pty # Pseudo-ttys (telnet etc) >pseudo-device snp 3 #Snoop device - to look at pty/vty/etc.. >#pseudo-device md # Memory "disks" >#pseudo-device gif 4 # IPv6 and IPv4 tunneling >#pseudo-device faith 1 # IPv6-to-IPv4 relaying (translation) > ># The `bpf' pseudo-device enables the Berkeley Packet Filter. ># Be aware of the administrative consequences of enabling this! >pseudo-device bpf #Berkeley packet filter > >options IPFIREWALL #firewall >options IPFIREWALL_VERBOSE #print information about > # dropped packets >#options IPFIREWALL_FORWARD #enable transparent proxy >support >options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity >#options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by >default >#options IPV6FIREWALL #firewall for IPv6 >#options IPV6FIREWALL_VERBOSE >#options IPV6FIREWALL_VERBOSE_LIMIT=100 >#options IPV6FIREWALL_DEFAULT_TO_ACCEPT >options IPDIVERT #divert sockets >#options IPFILTER #ipfilter support >#options IPFILTER_LOG #ipfilter logging >#options IPSTEALTH #support for stealth forwarding > ># USB support >#device uhci # UHCI PCI->USB interface >#device ohci # OHCI PCI->USB interface >#device usb # USB Bus (required) >#device ugen # Generic >#device uhid # "Human Interface Devices" >#device ukbd # Keyboard >#device ulpt # Printer >#device umass # Disks/Mass storage - Requires scbus and da >#device ums # Mouse ># USB Ethernet, requires mii >#device aue # ADMtek USB ethernet >#device cue # CATC USB ethernet >#device kue # Kawasaki LSI USB ethernet > >-- >Antoine Beaupre >System Administrator >Chemical Computing Group, Inc. > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200008072123.OAA04143>