Messages in this thread | | | Subject | Re: [PATCH] zerocopy NFS updated | From | Trond Myklebust <> | Date | 18 Apr 2002 10:53:31 +0200 |
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>>>>> " " == Hirokazu Takahashi <taka@valinux.co.jp> writes:
> Hi, I've been thinking about your comment, and I realized it > was a good suggestion. There are no problem with the zerocopy > NFS, but If you want to use UDP sendfile for streaming or > something like that, you wouldn't get good performance.
Surely one can work around this in userland without inventing a load of ad-hoc schemes in the kernel socket layer?
If one doesn't want to create a pool of sockets in order to service the different threads, one can use generic methods such as sys_readahead() in order to ensure that the relevant data gets paged in prior to hogging the socket.
There is no difference between UDP and TCP sendfile() in this respect.
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