Michael Gilfix <mgilfix@eecs.tufts.edu> writes: > This comment is more of a question.. Does the chunksize not have > to do with how the filesystem stores blocks? Yes, but probably in non-obvious ways. Many file systems attempt to allocate subsequent blocks in a file into subsequent sectors of the disk. As a result, you can get lots of data in a single rotation of the disk. *If* you are going to use all the data, it is better to transfer them all in one chunk - the kernel needs to setup IO only for a single operation, which then completes at the burst speed of the device. If the disk repositions heads between reads, performance goes down. Regards, Martin
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