Hi,

How can I control the size of the block requests the sendfile() syscall 
performs
against the disk?

I'm using sendfile (on a 2.6.18 kernel) to copy 1M file chunks into a 
socket. The
socket send buffer size is 2MB, and I verify that its empty before 
making the call.
Indeed, 1M chunk is being sent, but from iostat, I can tell that the 
average request
size is around 128KB. Are there any kernel configuration variables that 
could change that?

Help will be appreciated.

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