On Sat, Apr 07, 2007 at 11:53:48AM -0600, Rob Sims wrote: > On Wed, Apr 04, 2007 at 11:19:30AM -0700, Stephen Hemminger wrote: ... > > You might have over run the hub and it wedged. Try doing: > > ethtool -r eth0 > > that forces a down/up > > I'm still seeing throughput drop to under 1 Mb/s (50-100kB/s) > periodically. I did an ethtool -S and ethtool -d to capture state. > (sky2-fail.log). I ran ethtool -r and retested; no change > (sky2-ethtool-r.log). Finally, ifdown - rmmod - modprobe - ifup, which > restored to Gigabit speeds (96+ MB/s), (sky2-modcycle.log). > > Please let me know if there's anything else I can poke into. As a > reminder, this is a 88E8053 r20. Next time I see a degradation, I'll > try cycling the switch.
I continued to have problems with this interface. I tried bringing up the second interface on the motherboard; I added a cable to the same hub as the first interface and configured an address on the same subnet. I intended to see if I could use it as a redundant interface for when the first hung. I haven't been able to test that, because now I haven't seen a hang or slowdown since I brought the second interface up. Could the idle interface have generated an interrupt which is never cleared because the interface is down? Or something similar? -- Rob
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