On 2007/02/23 18:58, William Bloom wrote: > Hmm, I'm rereading the product description for the Soekris lan1621, which > would go into my 4801's PCI slot and give me 2 enet ports. It claims 'High > performance PCI busmaster interface with large buffers and interrupt > holdoff'. > Would you have higher hopes for this than the on-board enet ports?
No, sorry. lan1621 and onboard use the same chip. > Do you know whether the OpenBSD 4.0 sis driver would support the > interrupt holdoff feature? You can modify it to fairly easily, but I didn't find it helping very much and it increases latency a bit when traffic is low. > Has anyone on this list actually tried a lan1621 on a Soekris 4801 in an > effort to boost performance, and were you satisfied with the results? Not 1621, but using a half-decent gig nic doesn't improve performance, I doubt it would help very much. (mind you the gig nic is designed for a standard system and is unlikely to do very much interrupt mitigation at such low traffic levels as max out the Geode cpu so there may be some tuning that could be done, nothing one-size-fits-all though). I think if you have sufficient traffic that this is a problem, you could really do with something faster to leave yourself some headroom to cater for 'unusual' situations (worm activity, etc) too. There are quite a few single-board computers to choose from that might be suitable.
