Differnce between linux write and sendfile syscall

Posted by JosiP on Stack Overflow See other posts from Stack Overflow or by JosiP
Published on 2010-04-30T10:01:38Z Indexed on 2010/04/30 10:07 UTC
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linux

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sendfile

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write

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sockets

Hi

Im programming webserver (C), which should send big files. My question is: What are the main differneces in two syscalls: write and sendfile. Does sendfile depends on size of socket system buffer ? I noticed that write often writes less then i requested.

For example, if got many requests for one file: should i open it, copy into memory and use 'write', or maybe i can do 'sendfile' for each client ?

thx in advance for all answers

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