Hacker News new | ask | show | jobs
by seniorgarcia 1924 days ago
So, considering the amount of responses for thread count that you can not count on for any sort of performance, why do you need the thread count? Since you already answered downstream, I'll spare you the bother of doing it here...

>You don't need it. I do. blabla, it makes it easier for me blabla native apps are tracking you as well

1 comments

Do you... Do you maybe not know how concurrency works?

It's not about hitting a minimum threshold of performance. It's about achieving the best possible performance for whatever system it's running on.

Maybe you think because I said VR it must mean I need to be running on massive gaming rigs. We run quite nicely on 5 year old smartphones, too. We run a pancake mode for people without VR. We run on every headset on the market, and we don't have to pay a lick of attention to what Facebook or Google or Apple thinks should and should not be in their app stores. And we can do this because of the broad range of browser APIs.

Maybe you do not know what words in the English language mean? I have a Quest and an Oculus VR and a Samsung Gear VR and a shitty cardboard daydream.

I get how concurrency works. I do not get how you get any sort of useful information from my desktop claiming 12 threads, to my phone claiming 8 threads, to my quest claiming 6 threads, to my ipad/samsung tablet claiming however many threads over webxr.

I do not see how you can do anything useful with the thread count which is what I have been disputing. CPU thread count seems especially useless since it has no relation to VR performance.

I told you what usefulness I get out of it. Any one of those cores can decode a texture in T time. Do you want me to take T*N time to decode them on the render thread, or would you rather I took T*N/C off render thread on a system with C logical cores? I don't care that T is different on different machines. I don't care that C is different. Even small values of C makes up for some very large values of T on old CPUs.
And that is totally fine. If you don't care you don't need to know.

That has been my issue all along. Client computation of course needs to know how many threads are available to distribute computation in an efficient way. Why would the host need to know this though?

Who said anything about the host?
>Why does a webpage get to know how many CPU cores I have?

The question we have been replying too? Nobody gives a shit what you can do within the client. Fingerprinting the client as the host is an issue though, you might at least appreciate that...