Re: [9front] Thoughts on Wayland?

[David Leimbach <leimy2k@icloud.com>]

Sent from my iPhone

> On Aug 4, 2024, at 3:28 PM, ori@eigenstate.org wrote:
> 
> Quoth David Leimbach <leimy2k@icloud.com>:
>> 
>>> 
>>>> 
>>>> While it's theoretically possible to do mmap over 9p, it's not going to
>>>> be a good experience.
>> 
>> Is it substantially worse than mmap’ing over NFS? I can imagine a lot of panic or deadlock cases but…. Yeah that’s true for NFS also. At least a core dump.
>> 
> 
> I'm not familiar enough with the internals of the NFS
> protocol to say for sure.
> 
> However, dont' just consider deadlock, consider coherence.
> What happens if you put a mutex into shm, and two machines
> try to lock it at the same time?
> 
> How do you avoid turning every single memory access into
> a network round trip without some sort of sideband protocol?
> 
> What happens if a laptop participating in that coherence
> mechanism gets its lid closed and hibernates for an hour or
> three, and then comes back?


It’s a nasty game of timeouts and hangups… like everything in distributed systems.