[colug-432] Unix Is The Last Operating System
spp at unixsa.net
Wed Jun 17 12:09:43 EDT 2015
On 6/17/2015 11:18 AM, Rob Funk wrote:
> If you consider the Linux kernel to be the hypervisor, that's starting
> to sound like Docker and similar Container systems. You could set
> things up so that the host only has enough to run the containers, and
> all applications run in containers - which in turn each contain
> nothing that's not necessary for running that application.
Truthfully, I am thinking of more of vSphere/ESXi due to its prevalence
in the market and its wider ecosystem. Containers are not really
changing the paradigm I'm thinking about, because they are still heavily
wedded to the traditional Linux OS concept. You still have a really big
underlying OS without the application itself taking on the higher level
> I think many of the things you want to get rid of will long remain
> useful security and system management tools. You risk throwing things
> out only to see them gradually added back in (reinvented poorly).
The point is to remove the necessity for the security and management
tools. If you are dealing with virtual applications that have a single
function, where do you need much of this? Think of the specialized
hardware appliances we have - network functions, security functions,
telephony, digital signage, cameras, satellite receivers. Many of them
are based on embedded Windows or Linux distributions, but do they truly
need all the complexity of a complete kernel and OS, or would it be
possible to embed that functionality directly into the application.
> "Not a traditional filesystem" means yet another filesystem, optimized
> for the specific purpose at hand. You'll have different filesystems
> for different purposes.
Yes, and as I mentioned, you already see this specifically from DB
systems, where they want a raw device to manage for performance reasons.
> There's been speculation and observance over the last few years that
> the traditional PC is disappearing in favor of tablets and the like.
> But there will always be people with specialized needs who aren't
> served such devices -- for example, developers writing code for those
> tablets and for the servers they rely on.
Of course, there will always be the need for some generic OSes. I was
exaggerating a little when I said no need, but for many major
application systems, when does it get to the point to make more sense to
write to the hypervisor than to write to a specific OS?
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