[erlang-questions] problem with pread,recursrsive func

[sandeep_k]

I has written a plug in tsung which read data from file and send though UDP
Socket 
But when I crated 10 users per sec with 30 sec it is taking full memory  
when commented  pread it is working properly  
How to avoid this problem , is this problem due to recursive function ?
How to flush for Data buffer ?

Read_send(Fd,Offset) ->
Case 	File:pread(Fd,Offset,4096) of
	{ok,Data} ->
		I am send data using UDP socket
		NewOffset=Offset+4096,
		I will recursively call this function till 20Mb file is read 
		Read(Fd,NewOffset);
	_ ->
		Error
end

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