this post was submitted on 27 Aug 2024
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Yep. I work in IT support, almost entirely Windows but similar concepts apply.
I see people pushing 6G+ with the OS and remote desktop applications open sometimes. My current shop does almost everything by VDI/remote desktop.... So that's literally the only thing they need to load, it's just not good.
On the remote desktop side, we recently shifted from a balanced remote desktop server, over to a "memory optimised" VM, basically has more RAM but the same or similar CPU, because we kept running out of RAM for users, even though there was plenty of CPU available... It caused problems.
Memory is continually getting more important.
When I do the math on the bandwidth requirements to run everything, the next limit I think we're likely to hit is RAM access speed and bandwidth. We're just dealing with so much RAM at this point that the available bandwidth from the CPU to the RAM is less than the total memory allocation for the virtual system. Eg: 256G for the VM, and the CPU runs at, say, 288GB/s....
Luckily DDR 4/5 brings improvements here, though a lot of that stuff has yet to filter into datacenters