[Cake] some comprehensive arm64 w/cake results

[David Lang]

On Thu, 28 Sep 2023, Jonathan Morton via Cake wrote:

>> On 28 Sep, 2023, at 3:15 pm, Sebastian Moeller <moeller0 at gmx.de> wrote:
>> 
>> This promises even better performance for loads like cake than the already pretty nifty pi4B
>
> Well, increased computing performance is always welcome - but as I've said before, in most cases I don't think CPU performance is the limiting factor for CAKE.
>
> When the CPU load goes up as networking throughput reaches the physical limit of the interface (or the I/O subsystem), what you're seeing is the CPU just spinning its wheels while waiting for a mutex to unblock.  Spinning faster doesn't make the mutex unblock sooner!

but a faster I/O system should help.

David Lang