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  2. MIDRANGE-L
  3. September 2017

Re: Database I/O Modernization

On Tue, Sep 12, 2017 at 10:56 AM, Nathan Andelin <nandelin@xxxxxxxxx> wrote:


To be clear, these are not my I/O servers, nor am I advocating for them.
I'm accumulating my thoughts at the following link, which also shows the
benchmark code:

https://rd.radile.com/rdweb/info2/ibmiapp02.html


​

fcusmstf if e k disk


The file is being opened for input, which allows for blocking of the disk
reads.

The I/O server opens it for update with no blocking.

That's reason for the difference.

The multiple layers of procedure calls are insignificant.

Charles

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