by "John W. Kennedy" <jwkenne@[EMAIL PROTECTED]
>
Oct 16, 2007 at 11:30 PM
glen herrmannsfeldt wrote:
> peter.ludemann@[EMAIL PROTECTED]
wrote:
>
> (snip)
>> That's how
>> they discovered that MVCL was slower than a loop of MVCs. (BTW, PL/I
>> "optimizing" compiler also used a loop of MVCs rather than MVCL.)
>
> That has been widely known for a while now.
>
> I believe, though, that MVCL is still faster for validating
> storage. That is, at power up when the ECC hasn't been set
> yet you have to write whole ECC blocks. MVCL will do that
> (assuming the right alignment) MVC might not.
But that isn't necessary. Volatile ECC is made valid on power-on, and
non-volatile ECC is left as-is.
--
John W. Kennedy
"Only an idiot fights a war on two fronts. Only the heir to the throne
of the kingdom of idiots would fight a war on twelve fronts"
-- J. Michael Straczynski. "Babylon 5", "Ceremonies of Light and Dark"