Messages in this thread | | | Date | Mon, 14 Jan 2008 14:02:43 -0600 | From | "Chris Friesen" <> | Subject | Re: questions on NAPI processing latency and dropped network packets |
| |
Eric Dumazet wrote: > Chris Friesen a écrit :
>> Based on the profiling information we're spending time in >> sctp_endpoint_lookup_assoc() which doesn't actually use hashes, so I >> can't see how the hash would be related. I'm pretty new to SCTP >> though, so I may be missing something. > > Well, it does use hashes :) > > hash = sctp_assoc_hashfn(ep->base.bind_addr.port, rport); > head = &sctp_assoc_hashtable[hash]; > read_lock(&head->lock); > sctp_for_each_hentry(epb, node, &head->chain) { > /* maybe your machine is traversing here a *really* long > chain */ > }
The latest released kernel doesn't have this code, it was only added in November. The SCTP maintainer just pointed me to the patch, and made some other suggestions as well.
Chris -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |