Messages in this thread | | | Date | Tue, 29 Jun 1999 09:12:22 +0200 | From | Kurt Garloff <> | Subject | Re: Network slow-downs - someone follow this thread this time please! |
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On Mon, Jun 28, 1999 at 11:05:32PM +0000, cybertech@cybertech.org wrote: > I've got 3 machines running 2.2.10. 2 of the machine are PPro200, 1 is > PII 350. All are running 3COM 3C905/905b PCI controllers -- 5 of them in > total, 2 running at 10mb, 3 at 100mb. > > [... ---- ...] > > The machine currently has two network cards, one ISA NE2000 clone and > one Intel Ether Express 100 card, which is the card I have trouble > with. The machine works many as NFS-server. > > After upgrading to the 2.2 series we have from time to time > experienced severe slow-downs on the TCP performance, down to 1-10% of > the normal performance, measured by ttcp. According to /proc/net/dev, > we have no packet loss when the network slows down. > > [...] > The performance goes back to normal when I take down the interface and > reinsert the eepro100 module into the kernel. After I've done that, > the performance is fine for a couple of days or maybe weeks. > [...] > > The traffic that goes through the NE2000-card seems to be unaffected > by what's happening on the eepro100 interface, the ping response is > stable way below 5 ms all time. I used to have an Accton 21140-based > card instead of the eepro100 card, and I experienced the same problems > using that card too.
Strange enough, I remember that I read a thread about losing network connectivity. The 3C905, tulip and eepro100 seemed to be affected, NE2000 not. So what's so special about their drivers? About their hardware? Speed?
Anybody has a clue? -- Kurt Garloff <garloff@suse.de> SuSE GmbH, Nürnberg, FRG Linux kernel development; SCSI driver: DC390 (tmscsim/AM53C974) [unhandled content-type:application/pgp-signature] | |