> On 18 Nov 2021, at 02:06, yadong.li <[email protected]> wrote:
> 
> Hi:
>  I learn the sel4 performance form https://sel4.systems/About/Performance/
>  I focus on the ARMv8 platform, from the website, the parameters are as 
> follows:
>     ISA    Mode  Core/SoC/Board   Clock         IRQ Invoke         IPC call  
> IPC reply
>  "Armv8a     64     A57/Tx1/Jetson   1.9 GHz         863 (18)          
> 396(15)   397(4)"
> 
>  I want to know what is the length of IPC for the record provided on the web 
> page , when test IPC call and reply?  0 or 10?

The page reports the 0-length numbers. The idea is that IPC should fit into 
registers, the 10 case is the one that make it spill into memory deliberately. 
That number is good to know for development, but should not be the main 
performance characteristic.

Cheers,
Gerwin

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