Optimum file buffer read size?

Question

I am writing an application which needs to read fairly large files. I have always wondered what\'s the optimum size for the read buffer on a modern Windows XP computer. I go

Answer 1

Depends on where you draw the line between access time and memory usage. The larger the buffer, the faster - but the more expensive in terms of memory. reading in multiples of your File system cluster size is probably the most efficient, in a Windows XP system using NTFS, 4K is the default cluster size.

You can see this link Default cluster size for NTFS, FAT, and exFAT

Bye.