Apt, Apache, and Lua

Not_Oles

Please remember: no claim that any of this is correct.

@Not_Oles said:

LuaJIT is 285.63 times faster than Python

Gemini said:

LuaJIT is significantly faster than Python: This is a great demonstration of LuaJIT's performance benefits. LuaJIT is a just-in-time (JIT) compiler, which means it can compile the Lua code into optimized machine code on the fly, resulting in much faster execution than Python's interpreted approach.

@Not_Oles said:

C is 2.58 times faster than LuaJIT

Gemini said:

C is faster than LuaJIT: This is also expected, as C is a lower-level language with more direct control over hardware resources. Even with JIT compilation, LuaJIT typically has some overhead compared to native C code.

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@entrailz said: Their most recent outage mentions their usage of Lua here:

https://blog.cloudflare.com/cloudflare-incident-on-june-20-2024

See also https://blog.cloudflare.com/more-consistent-luajit-performance

Not_Oles

A kind person pointed out to me that in the code presented above at https://lowendtalk.com/discussion/comment/3983217/#Comment_3983217 and at https://lowendtalk.com/discussion/comment/3983223/#Comment_3983223 LuaJIT opens /dev/null only once and Python opens /dev/null for each write. It seems unfair to Python to make it do more work than LuaJIT. So the comparison shown here seems borked.

I went ahead and redid the files, the compilation, and the comparison with modified Python code which was given to me by the person who pointed out the error:

PyRun_SimpleString(
   "import os\n"
   "with open(os.devnull, 'w') as devnull:\n"
   "    for i in range(10000):\n"
   "        print('hello world from Python', file=devnull)"
);

Thanks to the kind person who pointed out the error and showed me the replacement Python code!

@totally_not_banned