[Info-vax] CRTL and RMS vs SSIO

[Arne Vajhøj]

On 10/7/2021 12:27 PM, Dave Froble wrote:
> On 10/7/2021 10:01 AM, Arne Vajhøj wrote:
>> I still don't get it.
>>
>> I thought SSIO was about shared access to byte streams.
> 
> That is a bit of tunnel vision.

Not really. More like the definition.

<quote>
SSIO
====
Shared Stream IO feature provides POSIX compliant read/write to byte 
stream files.
Hence SSIO feature, the data consistency is guaranteed when mutiple 
processes are performing a Read/Write to non overlapping byte boundaries 
with the same block boundary.
</quote>

> Locking numeric ranges could be used for many other things.  Such a 
> capability should be generic, not just for a single purpose.

I agree that range locking is a useful feature for many other purposes
than SSIO.

> That's the problem I see, the tunnel vision when approaching the issue, 
> rather than the vision to see just how useful the capability could be.
> 
> Craig's post points that out.

It listed some project that could benefit from SSIO besides
PostgreSQL.

And I just don't understand some of the examples since they
sound traditional record oriented to me.

Arne