Messages in this thread | | | Date | Fri, 22 Oct 1999 17:20:53 +0200 | From | Radovan Garabik <> | Subject | Re: SMC-Ultra ethernet sluggishness |
| |
Scott G. Miller wrote: : > : : : > I have an SMC-Ultra EtherEZ ISA adapter, which operates well most of the : > time. However, after a lot of traffic (maybe a certain amount of data, or : > a certain period of time), performance becomes abysmal. Connections to : > anything anywhere stall for minutes at a time, or die out : > entirely. Transfers, when they work, operate at a 1 or 2 k per second : > rather than the usual 300k. This is not network performance in general.
the very same happens to me. (the same adapter)
: > : > If I reset the network stack, by bringing eth0 down and removing the : > modules (smc-ultra and 8390), then reinsert them, performance returns to : > normal.
I do not need to reinsert modules; just bringing eth0 down and up returns it to normal
: > : > This is on Linux 2.2.13, on an ASUS SMP motherboard, with only one P2-300 : > processor (kernel is NOT compiled for SMP). I'm including : > /proc/modules, /proc/interrupts and /proc/ioports just in case.
it goes all the time I remember (it was about 2.2.5 since the computer exists), up to 2.2.12, I haven't tried 2.2.13 yet
: : Useful information would also include the driver detection message, : giving whether the card is operating in shared memory or I/O mode, : the output of "cat /proc/net/dev" and any error/warnings reported : by the driver (use "dmesg").
I/O mode, no errors or warning, everything seems usual
after 13 days of uptime, I think it did not happened since then (it is not an important server anymore)
I vaguely remember that when it happened the number of errs went up dramatically.
cat /proc/net/dev: Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed lo: 9890796 78049 0 0 0 0 0 0 9890796 78049 0 0 0 0 0 0 eth0:2115111477 10903678 10 0 0 310 0 6069402 111633103 5965476 32 0 0 60792 64 0 vmnet0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 vmnet1: 0 0 0 0 0 0 0 0 0 3183 0 0 0 0 0 0 vmnet2: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 vmnet3: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
: : If there is nothing obviously wrong in that then you may need to use : tcpdump to get a better look at what is happening during a slowdown.
nothing unusual, just a lot of traffic (i.e. copying files from nfs mount, while ftp-ing (simultaneously more connections) other files, while another linux with ipx-overbroadcasting bug was flooding the network :-) (the latter is not neccessary)
-- ----------------------------------------------------------- | Radovan Garabik http://melkor.dnp.fmph.uniba.sk/~garabik/ | | __..--^^^--..__ garabik @ fmph.uniba.sk | ----------------------------------------------------------- Antivirus alert: file .signature infected by signature virus. Hi! I'm a signature virus! Copy me into your signature file to help me spread!
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |