[openib-general] Re: LLTX and netif_stop_queue
Roland Dreier
roland at topspin.com
Mon Jan 3 07:57:14 PST 2005
jamal> Andi or anyone else - has anyone really done perfomance
jamal> analysis of LLTX (with anything other than loopback) and
jamal> shown it has any value? Maybe time to just shoot the damn
jamal> thing.
For the IPoIB driver, it seems to be worth a couple percent. It's
hard to get really consistent results but on my pair of test systems,
TCP throughput with netperf goes up by about 30 Mbps out of roughly
1900 Mbps total. It's probably not worth the complexity in the net
core if all drivers only get that level of improvement.
- Roland
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