Re: Database I/O Modernization

On Fri, Sep 15, 2017 at 3:18 PM, Charles Wilt <charles.wilt@xxxxxxxxx>
wrote:

​Not even close. Yes at some point a block of data is read, and part of
that data is extracted as a "record" or more likely a set of records.

That's RLA! Whether the read operation returns a pointer to one record or
to a block of records is based on whether "blocking" was selected when the
file was opened.

So the disk I/O it the bottom is basically the same, but that doesn't mean
SQL is ​using RLA.

You and I evidently have a different definition of RLA. To me, open, close,
read, write, update, delete, position to, lock, unlock are RLA operations.
And yes, that is what the SQE is using under the covers.