Free Republic
Browse · Search
General/Chat
Topics · Post Article

To: Utilizer

Anyone who uses a buffered database knows this is nonsense.


63 posted on 03/30/2015 8:08:20 PM PDT by AppyPappy (If you are not part of the solution, there is good money to be made prolonging the problem.)
[ Post Reply | Private Reply | To 1 | View Replies ]


To: AppyPappy

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.


67 posted on 03/30/2015 8:30:15 PM PDT by mbj
[ Post Reply | Private Reply | To 63 | View Replies ]

Free Republic
Browse · Search
General/Chat
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson