On Wed 24 Jan 2001, Luke Shulenburger wrote: > I just bought a 100mb switch and have noticed that my alpha is getting > really poor > performance over the network. I have tried other computers and they get > transfer > rates that are acceptable (20mb/s or so). However, whenever I transfer > to or from > my alpha (an LX with a tulip ethernet card with woody installed) I get > about 100kb/s > download and a maximum of 50kb/s upload speed.
This is fairly typical of a wrong halfduplex / fullduplex setting. There's a utility available from Donald Becker's site that can tweak that setting (I forget the site name at the moment, and the utility's name, although that was something starting with mii). > I don't exactly know where to start attacking the problem. Here are a > few things > that look suspicious. Whenever I ping anything I get messages like so: > > 64 bytes from 18.239.0.1: icmp_seq=6 ttl=255 time=4.0 ms > wrong data byte #8 should be 0x8 but was 0x5c > c d e f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 > 23 24 25 26 27 28 29 2a 2b > 2c 2d 2e 2f 0 0 0 0 0 0 0 0 0 0 0 0 This is a stupid bug in ping, where sizeof(struct timeval) was used everywhere except for 3 places where there was a hardcoded 8. I've found the bug and reported it, but I haven't seen any action on it yet. I may have to do an NMU... > and this shows up in /var/log/syslog > Jan 24 22:59:53 bartender kernel: ping(19841): unaligned trap at > 0000000120003110: 000000012002671c 29 2 Hmm, hadn't noticed that. However, I recommend installing iputils-ping instead of netkit-ping (at least for the time being), that ping works better. I do get this, though: $ ping -c 3 gw PING gw.local (192.168.1.254) from 192.168.1.2 : 56(84) bytes of data. 64 bytes from gw.local (192.168.1.254): icmp_seq=0 ttl=255 time=442 usec 64 bytes from gw.local (192.168.1.254): icmp_seq=1 ttl=255 time=66 usec Warning: time of day goes back, taking countermeasures. 64 bytes from gw.local (192.168.1.254): icmp_seq=2 ttl=255 time=1.209 msec Until you see the warning message, don't rely on the times. I have no idea what this means, though. Anyway, that will have nothing to do with your slow ethernet problem. > I'm also getting messages in the /var/log/syslog like this whenever I > try to transfer files > with samba: > Jan 24 14:18:08 bartender nmbd[19120]: warning: /etc/hosts.deny, line 1: > missing ":" separator > Jan 24 14:18:08 bartender nmbd[19120]: warning: /etc/hosts.deny, line 2: > missing ":" separator So fix lines 1 and 2... > Jan 24 14:18:08 bartender nmbd[19120]: params.c:OpenConfFile() - > Unable to open configuration file "/etc/samba/smb.conf": > Jan 24 14:18:08 bartender nmbd[19120]: ^INo such file or directory It definitely looks like you never configured samba? There *must* be a /etc/samba/smb.conf file. > Jan 24 15:38:01 bartender modprobe: modprobe: Can't locate module > net-pf-10 Edit /etc/modutils.conf, uncomment the "alias net-pf-10 off" line. It's for IPv6 which exim tries to use (and then it falls back to IPv4, so this is no problem either). > I have outputs from tulip-diag and from mii-diag as well. Basically Ah, that's the one! > I have lots of information but no idea where to start using it. Any Figure out how to turn on / turn off fullduplex with mii-diag, and see what difference it makes (you can do it on the fly). Paul Slootman -- home: [EMAIL PROTECTED] http://www.wurtel.demon.nl/ work: [EMAIL PROTECTED] http://www.murphy.nl/ debian: [EMAIL PROTECTED] http://www.debian.org/ isdn4linux: [EMAIL PROTECTED] http://www.isdn4linux.org/
