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A comment on Mezzano – An operating system written in Common Lisp. Parent comment

Re:Mezzano – An operating system written in Common Lisp by 314 on Tuesday June 18, 2019 @04:20AM (#20210646)
As a datapoint Quake is quite old. When it was released it used software rendering on a Pentium2. While is nice that everything from the ground up is written in lisp it sounds as if you are only achieving the performance of a P2 on modern hardware. What is the performance gap between Mezzano and an OS/application written in C/C++?
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Re:Mezzano – An operating system written in Common Lisp by reikonomusha on Tuesday June 18, 2019 @10:36AM (#20213489)
Folks are missing the point with performance. The Mezzano compiler + translating LLVM into Lisp wont be very efficient. That’s not the point. It’s crazy that a game like that runs on a non-Windows non-UNIX machine that is written from the ground up in Common Lisp, by way of compiling an application into a bunch of Lisp source code first.
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Re:Mezzano – An operating system written in Common Lisp by NovaEcosophy on Tuesday June 18, 2019 @04:32AM (#20210704)
I think you forget just how old Quake is. I remember playing it on a 486DX 66Mhz, a P2 would have been total over kill for that game.
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Re:Mezzano – An operating system written in Common Lisp by kazinator on Tuesday June 18, 2019 @05:43PM (#20218760)
I built it (circa 1996) on HP PA-RISC workstations, like HP-715's. There was no assembly code for those, just portable C. The frame rate wasn't great, but it played.
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Re:Mezzano – An operating system written in Common Lisp by skocznymroczny on Tuesday June 18, 2019 @05:24AM (#20210931)
P2 sounds about right for Quake2
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Re:Mezzano – An operating system written in Common Lisp by Crinus on Tuesday June 18, 2019 @12:16PM (#20214719)
Both Quake 1 and Quake 2 ran fine on my Pentium MMX (and i guess regular Pentium since they didn't use the MMX stuff) using the software rasterizer and Quake 3 also ran fine on my Pentium 2 with a GeForce 2.
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Re:Mezzano – An operating system written in Common Lisp by 6thaccount2 on Tuesday June 18, 2019 @07:00AM (#20211615)
Are you thinking Quake III Rocket Arena?
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Re:Mezzano – An operating system written in Common Lisp by LambdaComplex on Tuesday June 18, 2019 @08:44AM (#20212363)
*Quake III Arena

Rocket Arena is/was a mod

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Re:Mezzano – An operating system written in Common Lisp by everdrive on Tuesday June 18, 2019 @12:39PM (#20214953)
I sadly tried to run Quake on my 486DX 33, and it was not up to the task =(
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Re:Mezzano – An operating system written in Common Lisp by PuercoPop on Tuesday June 18, 2019 @12:20PM (#20214760)
The reason it is slow is not because it is written is Lisp but because of how it is implemented, primarily because it is a hobby project. Graphics are rendered on the CPU for example.

https://github.com/froggey/Mezzano/blob/master/gui/blit-x86-...

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