the 8 byte buffer would result in a lot of disk thrashing compared to 64k buffer

And there shouldn't be any disk trashing because read and write are buffered. The size of the buffer isn't 8 bytes as you claim, but rather a multiple of the size of a disc sector. The disk is not accessed every time read and write is called.

Because I thought read would be slower than sysread

sysread + syswrite + manual buffering in Perl
should be slower than
read + write + well tested buffering in C

Note that I didn't say my way is faster, just that it might be. Benchmark to find out which is faster on your system.

In reply to Re^3: Fast parsing for cypher block chaining by ikegami
in thread Fast parsing for cypher block chaining by fluffyvoidwarrior

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