From owner-freebsd-stable Wed Apr 4 0:55:40 2001 Delivered-To: freebsd-stable@freebsd.org Received: from smtp.popsite.net (smtp.popsite.net [216.126.128.16]) by hub.freebsd.org (Postfix) with ESMTP id D870737B71E for ; Wed, 4 Apr 2001 00:55:29 -0700 (PDT) (envelope-from bill@twwells.com) Received: from twwells.com (01-058.051.popsite.net [64.24.21.58]) by smtp.popsite.net (Postfix) with ESMTP id 78A99FF5C for ; Wed, 4 Apr 2001 02:54:58 -0500 (CDT) Received: from bill by twwells.com with local (Exim 3.22 #1) id 14ki5p-000KKo-00 for stable@freebsd.org; Wed, 04 Apr 2001 03:52:41 -0400 Subject: possible problem with dc driver To: stable@freebsd.org Date: Wed, 4 Apr 2001 03:52:41 -0400 (EDT) X-Mailer: ELM [version 2.5 PL3] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: From: "T. William Wells" Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I noticed that my network performance seemed sluggish. So, today I decided to do some real testing. Machine G: CPU: AMD-K6(tm) 3D processor (350.80-MHz 586-class CPU) Origin = "AuthenticAMD" Id = 0x580 Stepping = 0 Features=0x8001bf AMD Features=0x80000800 dc0: port 0xd800-0xd8ff mem 0xdf000000-0xdf0000ff irq 10 at device 10.0 on pci0 dc0: Ethernet address: 00:a0:cc:e2:ff:24 miibus0: on dc0 dcphy0: on miibus0 dcphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto Machine P: CPU: AMD-K5(tm) Processor (116.93-MHz 586-class CPU) Origin = "AuthenticAMD" Id = 0x524 Stepping = 4 Features=0x21bf AMD Features=0x0 dc0: port 0xf000-0xf0ff mem 0xffae7c00-0xffae7fff irq 11 at device 13.0 on pci0 dc0: Ethernet address: 00:03:6d:19:3b:ec miibus0: on dc0 ukphy0: on miibus0 ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto Copying a big file from P to G worked without trouble and at a reasonable speed (6.3mbps). But copying from G to P was slow as molasses -- also in the past I have had lockups on P when receiving lots of data on it. So I decided to concentrate there. What I did was set up tcpdump on both ends and did an scp from a file on G to a file on P. I noticed in the tcpdump output that every packet that P saw, G also saw. However, there were packets that G saw that P did not and all of those were packets sent by G. For amusement, I tried swapping P's cable for another cable. No effect. I have another machine on the network, a '486. Testing with it established that the problem isn't with G. Clearly, P is losing packets at some point from the ethernet card inward. Given that it also sometimes hangs on receipt of lots of data, I'm betting on a driver bug. Though, it's possible that there is a hardware problem that causes the packet loss which also triggers a driver bug that wouldn't happen with good hardware. Anyway, this is as far as I've got and I don't know where to proceed from here. I've appended the kernel configuration of P and its dmesg.boot. Copyright (c) 1992-2001 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 4.3-RC #3: Tue Apr 3 00:37:56 EDT 2001 root@twwells.com:/usr/obj/usr/src/sys/P Timecounter "i8254" frequency 1193182 Hz Timecounter "TSC" frequency 116933696 Hz CPU: AMD-K5(tm) Processor (116.93-MHz 586-class CPU) Origin = "AuthenticAMD" Id = 0x524 Stepping = 4 Features=0x21bf AMD Features=0x0 real memory = 29360128 (28672K bytes) avail memory = 25690112 (25088K bytes) Preloaded elf kernel "kernel" at 0xc02f1000. Preloaded userconfig_script "/boot/kernel.conf" at 0xc02f109c. npx0: on motherboard npx0: INT 16 interface pcib0: on motherboard pci0: on pcib0 isab0: at device 1.0 on pci0 isa0: on isab0 atapci0: port 0x4000-0x400f,0x7f1fb9f4-0x7f1fb9f7,0xc7ff02f8-0xc7ff02ff,0xeafa3ee0-0xeafa3ee3,0x90eefdf8-0x90eefdff irq 0 at device 1.1 on pci0 ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 dc0: port 0xf000-0xf0ff mem 0xffae7c00-0xffae7fff irq 11 at device 13.0 on pci0 dc0: Ethernet address: 00:03:6d:19:3b:ec miibus0: on dc0 ukphy0: on miibus0 ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto pci0: at 20.0 irq 0 pca0 at port 0x40 on isa0 atkbdc0: at port 0x60,0x64 on isa0 atkbd0: flags 0x1 irq 1 on atkbdc0 kbd0 at atkbd0 vga0: at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0 sc0: at flags 0x100 on isa0 sc0: VGA <16 virtual consoles, flags=0x300> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 16550A sio1 at port 0x2f8-0x2ff irq 3 on isa0 sio1: type 16550A ppc0: at port 0x378-0x37f irq 7 on isa0 ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode ppi0: on ppbus0 plip0: on ppbus0 lpt0: on ppbus0 lpt0: Interrupt-driven port fdc0: at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0 fd0: <1440-KB 3.5" drive> on fdc0 drive 0 fd1: <1200-KB 5.25" drive> on fdc0 drive 1 pcm0: at port 0x530-0x537,0x388-0x38f irq 5 drq 0 on isa0 IP packet filtering initialized, divert enabled, rule-based forwarding disabled, default to deny, logging limited to 1000 packets/entry by default DUMMYNET initialized (010124) ad0: 6149MB [13328/15/63] at ata0-master UDMA33 acd0: CDROM at ata1-master using PIO4 machine i386 cpu I486_CPU cpu I586_CPU cpu I686_CPU ident P maxusers 64 options CD9660 #ISO 9660 Filesystem options CD9660_ROOT #CD-ROM usable as root, CD9660 required options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!] options DUMMYNET options FFS #Berkeley Fast Filesystem options FFS_ROOT #FFS usable as root device [keep this!] options ICMP_BANDLIM #Rate limit bad replies options INCLUDE_CONFIG_FILE # Include this file in kernel options INET #InterNETworking options IPDIVERT #divert sockets options IPFIREWALL #firewall options IPFIREWALL_VERBOSE #print information about dropped packets options IPFIREWALL_VERBOSE_LIMIT=1000 #limit verbosity options IPSTEALTH #support for stealth forwarding options KBD_INSTALL_CDEV # install a CDEV entry in /dev options KTRACE #kernel tracing options NO_F00F_HACK #Not a Pentium! options P1003_1B #Posix P1003_1B real-time extensions options PROCFS #Process filesystem options SCSI_DELAY=2000 #Delay (in ms) before probing SCSI options SOFTUPDATES #Enable FFS soft updates support options SYSVMSG #SYSV-style message queues options SYSVSEM #SYSV-style semaphores options SYSVSHM #SYSV-style shared memory options UCONSOLE #Allow users to grab the console options USERCONFIG #boot -c editor options VISUAL_USERCONFIG #visual boot -c editor options _KPOSIX_PRIORITY_SCHEDULING device isa device pci device npx0 at nexus? port IO_NPX irq 13 device pca0 at isa? port IO_TIMER1 device atkbdc0 at isa? port IO_KBD device atkbd0 at atkbdc? irq 1 flags 0x1 device psm0 at atkbdc? irq 12 device vga0 at isa? device sc0 at isa? flags 0x100 options SC_KERNEL_CONS_ATTR="(FG_WHITE|BG_BLACK)" options SC_KERNEL_CONS_REV_ATTR="(FG_YELLOW|BG_BLACK)" options SC_NORM_ATTR="(FG_WHITE|BG_BLUE)" options SC_NORM_REV_ATTR="(FG_YELLOW|BG_BLUE)" device sio0 at isa? port IO_COM1 flags 0x10 irq 4 device sio1 at isa? port IO_COM2 irq 3 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 fdc0 at isa? port IO_FD1 irq 6 drq 2 device fd0 at fdc0 drive 0 device fd1 at fdc0 drive 1 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 device miibus # MII bus support device dc # DEC/Intel 21143 and various workalikes device pcm pseudo-device bpf 4 # Berkeley packet filter pseudo-device ether # Ethernet support pseudo-device gzip #Exec gzipped a.out's pseudo-device loop # Network loopback pseudo-device pty 64 # Pseudo-ttys (telnet etc) pseudo-device speaker #Play IBM BASIC-style noises out your speaker pseudo-device splash # splash screen/screen saver pseudo-device tun # Packet tunnel. pseudo-device vn #Vnode driver (turns a file into a device) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message