Messages in this thread | | | Date | Sat, 20 Apr 2002 16:47:22 +0900 (JST) | Subject | Re: [PATCH] zerocopy NFS updated | From | Hirokazu Takahashi <> |
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Hi,
> > And it seems to be more important on UDP sendfile(). > > processes or threads sharing the same UDP socket would affect each other, > > while processes or threads on TCP sockets don't care about it as TCP > > connection is peer to peer. > > No. It is not the lack of peer-to-peer connections that gives rise to the > bottleneck, but the idea of several threads multiplexing sendfile() through a > single socket. Given a bad program design, it can be done over TCP too. > > The conclusion is that the programmer really ought to choose a different > design. For multimedia streaming, for instance, it makes sense to use 1 UDP > socket per thread rather than to multiplex the output through one socket.
You mean, create UDP sockets which have the same port number? Yes we can if we use setsockopt(SO_REUSEADDR). And it could lead less contention between CPUs. Sounds good!
Thank you, Hirokazu Takahashi. - 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/
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