[Info-vax] Marketing ideas for VSI ?

[Arne Vajhøj]

On 12/15/2018 8:27 PM, Bill Gunshannon wrote:
> On 12/15/18 11:28 AM, Stephen Hoffman wrote:
>> Bill Gunshannon circa December 14, 2018 9:45 PM
>>> ... was network latency and that has really become less of an issue 
>>> today...
>>
>> Absent the advent of linkages via entanglement or wormhole, the 
>> physics used with cluster network links hasn't changed.
>>
>>  From ~six years ago, there can be surprises lurking: 
>> https://superuser.com/a/419167
>>
>> And latency visually: 
>> https://people.eecs.berkeley.edu/~rcs/research/interactive_latency.html
>>
>> If you're in the same or nearby data center, mirroring to remote 
>> server memory can be substantially faster than mirroring to local SSD.
> 
> Well, I was talking real world rather than theoretical.
> 20 years ago I used to connect to a machine in Texas A&M
> from the University of Scranton.  Character echo was not
> just noticeable it was measurable with a stop watch.
> Today, there would be no noticeable delay at all unless
> there was a major network outage somewhere between us.

Single interaction latency may not be human noticeable.

But it will be application noticeable and in some relative
common scenarios (high volume of interactions and
interactions need to be synced some way) the final
result will also be very human noticeable.

What works fine for terminal sessions or a web browser
sessions can be a disaster for database sessions.

Arne