3 ms·

I could see just powering through because modern hardware is fast enough to do so being an option. Adding 20% to a 10 second operation is a lot longer on a wal

I could see just powering through because modern hardware is fast enough to do so being an option. Adding 20% to a 10 second operation is a lot longer on a wall clock than adding 20% to a 1 second operation.

monocasa 2mo ago
If anything, Mach style IPC has gotten worse because of the greater overhead if kernel/user transitions. Spectre really did a number on context switching overhead.
0cf8612b2e1e 2mo ago
What even is a 20% delta in performance? Like a five year old difference in hardware design. If I could get a micro kernel with a better security profile than Linux, that doesn’t sound so bad. I could easily be using a ten year old chip for my day to day browsing and probably wouldn’t notice.
- yjftsjthsd-h 2mo ago
  > If I could get a micro kernel with a better security profile than Linux, that doesn’t sound so bad. I suggest that you look at genode/sculpt:)
Analemma_ 2mo ago
People lost their shit when Spectre mitigations added 20% overhead to kernel calls though. Why wouldn't they do the same for microkernel overhead?
- floxy 2mo ago
  If people really cared about performance, we'd be doing something other than the bloated way we have been doing things. https://winworldpc.com/product/qnx/144mb-demo https://winworldpc.com/product/qnx/144mb-demo
- pjmlp 2mo ago
  The same people are perfectly fine with Electron crap all over the place, they don't really care about overhead.
  - lanstin 2mo ago
    Not true in a data center - 20% less work for same CPU is like 25% more cores needed for any applications where the scaling is driven by CPU utilization. That is $ - and people have made things so far from efficient many medium size companies have 100k cores to pay for.
    - floxy 2mo ago
      I'm having a hard time believing that data centers are chomping at the bit to use the Hurd.
floxy 2mo ago
Hurd is like 36 years old at this point. More like adding 20% to a 10 second operation, compared to adding 20% to a 10ms operation.

monocasa 2mo ago

If anything, Mach style IPC has gotten worse because of the greater overhead if kernel/user transitions. Spectre really did a number on context switching overhead.

0cf8612b2e1e 2mo ago

What even is a 20% delta in performance? Like a five year old difference in hardware design. If I could get a micro kernel with a better security profile than Linux, that doesn’t sound so bad. I could easily be using a ten year old chip for my day to day browsing and probably wouldn’t notice.

yjftsjthsd-h 2mo ago
> If I could get a micro kernel with a better security profile than Linux, that doesn’t sound so bad. I suggest that you look at genode/sculpt:)

Analemma_ 2mo ago

People lost their shit when Spectre mitigations added 20% overhead to kernel calls though. Why wouldn't they do the same for microkernel overhead?

floxy 2mo ago
If people really cared about performance, we'd be doing something other than the bloated way we have been doing things. https://winworldpc.com/product/qnx/144mb-demo https://winworldpc.com/product/qnx/144mb-demo
pjmlp 2mo ago
The same people are perfectly fine with Electron crap all over the place, they don't really care about overhead.
- lanstin 2mo ago
  Not true in a data center - 20% less work for same CPU is like 25% more cores needed for any applications where the scaling is driven by CPU utilization. That is $ - and people have made things so far from efficient many medium size companies have 100k cores to pay for.
  - floxy 2mo ago
    I'm having a hard time believing that data centers are chomping at the bit to use the Hurd.

floxy 2mo ago

Hurd is like 36 years old at this point. More like adding 20% to a 10 second operation, compared to adding 20% to a 10ms operation.