Apt, Apache, and Lua

Comments

• Not_Oles Member, Patron Provider

  July 2024

  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.

  ---

  @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 Member, Patron Provider

  July 2024

  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