Anyone who uses a buffered database knows this is nonsense.
Maybe not for this specific scenario: writing the same string over and over. In fact, concatenating the same string, over and over.
After all, don’t many disk controllers (most in fact?) have their own onboard caching mechanism, including a write caching mechanism?
And isn’t it possible that the controller might in fact be able to operate in parallel with the CPU, with this specific scenario? Isn’t there an assembler command under the old DOS that used to use interrupt 25H that allowed writing sectors and would in fact write more than one sector with the same buffer?
Therefore if the *same* write command (with the same untouched buffer) were repeated over and over, perhaps there is in fact some truth to this.