Messages in this thread | | | From | jlnance@unity ... | Date | Fri, 28 Mar 2003 09:23:28 -0500 | Subject | sendfile or r+w for sending file to multiple machines |
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Hello All, I have an application that needs to be able to send large files to multiple machines (less than 10). The files get sent to the machines at the same time so we are thinking about writing the code so that it does 1 read (or perhaps a mmap) on the file, and then does multiple writes, onece to each machines socket. We are also considering using multicast but this seems unnecessarily complex. I dont want to reimplement TCP. We could also write this using sendfile, and I dont know if that is a good idea or not (hence this post). I think I would have to start multiple threads to get sendfile to work. This makes things more complex which is a minus, but how about performance. Do you think this would work better than read+write? The files are larger than system memory so our goal is to avoid reading the multiple times. With sendfile we can not really control how the files get read, but it seems likely that the different threads would inherently synchronize themselves. Any thoughts?
Thanks,
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