From: Jonas.Maebe@rug.SPAM.ac.ME.be.NOT   
      
   In article ,   
    Glenn Someone  wrote:   
      
   > records read in at a time in the program / time program ran. (run in   
   > "D" mode)   
   >   
   > 1 record at a time = 22.30 s   
   > 2048 records at a time = 16.64 s   
   > 16384 records at a time = 12.92 s   
      
   Regardless of buffering by the OS, there is of course always the   
   overhead of a context switch when you perform a system call. That's why   
   previous mails suggested to use a reasonably small buffer, but not "no   
   buffer".   
      
      
   Jonas   
      
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