What Linus Torvalds really thinks about ARM processors



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Real World Technologies, Linus Torvalds, shared their thoughts on why x86 has conquered the server market and the processor market. Some people immediately thought that Torvalds said you should forget ARM in the servers. That's not what he said.

First of all, Torvalds explained why he did not think that the development of multi-platform processors, like the one between x86 and ARM, worked well. "I can pretty much guarantee that as long as everyone crosses, the platform will not be as stable." He continued:

Some people think that "the cloud" means that the game of instructions does not matter. Grow at home, deploy in the cloud.

That's bull *** t. If you are developing on x86, then you will want to deploy to x86, because you will be able to run what you test "at home" (and by "at home", I do not literally speak at home, but in your work environment ).

This means that you will be paying a little more for hosting on the x86 cloud, simply because it matches what you can test on your own local configuration, and the errors you will get will translate better.

This is true even if what you are doing mainly is something that looks like a multiplicity of platforms, like simply running Perl scripts or whatever. Just because you want to have an environment as similar as possible,

Which means that cloud providers will end up making more money on their x86 side, which means they will give it html priority, that sort of thing).

This is not an arm problem. It's just how the development works. Torvalds continued:

Guys, do not you really understand why x86 took the server market?

It was not just all the prices. It was literally this problem "develop at home". Thousands of small businesses ended up having small random internal workloads where it was easy to get a random PC and run a silly little thing on your own. Then, as the workload increased, he became a "real server". And then, once that has grown, it has become quite logical to let someone else manage the hardware and the hosting, and the cloud has taken relay.

You really do not understand? This is not rocket science. This is not an invented story. That's literally what has happened and what has killed all the RISC providers and made x86 the undisputed king of the servers hill, to the point that everyone is no more than just the same. A rounding error.

Torvalds continued … The problem is not with ARM. It is that there is not enough PC ARM:

Without a development platform, ARM in the server space will never succeed. Trying to sell a 64-bit "hyperscaling" model is silly, when you do not have customers and you do not have a workload because you've never sold the good little box market that started the whole market.

The ARM price advantage will never exist for ARM servers unless you get enough volume to compensate for the huge Intel server volume benefit. Being a small die with cheaper NRE does not matter, when you can not compensate for the development costs in volume.

Does this mean that ARM is doomed to also be used on the cloud and servers? Nope.


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Torvalds wrote that the answer is facing us:

And the only way to change is that if you end up saying, "Look, you can deploy cheaply on an ARM box, and here is the development box you can work on. Real hardware for developers is extremely important. That's why the PC took over and why everything else is dead. "

We then addressed these issues by email and Torvalds doubled the need for ARM PCs. Torvalds said: "My argument was not that" ARM can not do it in the server space "as some people seem to have read.My argument was that" for ARM to do it in the server space, I think that they need to have development machines.

Torvalds is hopeful about this:

[It] can happen. Current ARM laptops are not great, but they will probably improve. And for years, people have been talking about Apple's migration from Apple, and that's actually how PowerPC development boxes used to exist.

There are ARM servers today. And there are enterprise-level Linux operating systems, such as Red Hat Enterprise Linux (RHEL) for ARM, SUSE Linux for ARM, and Ubuntu Server for ARM. But in the data center and the server room, they are still as rare as the goosebumps

For the ARM server to work, we need more than the popular, but not-so-powerful ARM systems, such as the Raspberry Pi. For ARM to become a major server and cloud architecture, Torvalds thinks we'll need powerful PCs from ARM development.

He is not wrong.

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