Re: Lua versus Ravi versus Luajit - a simple benchmark

[Ahmed Charles <acharles@...>]

Why does the Ravi version exist in a Debug directory? Are optimizations on?



> On Mar 4, 2015, at 4:43 PM, Dibyendu Majumdar <mobile@majumdar.org.uk> wrote:
> 
> Hi,
> 
> I implemented following additional op codes:
> LOADNIL
> LOADFZ (Ravi extension - sets a register to floating point 0)
> ADDFN (Ravi extension - adds a floating point value in register B to
> operand C  and stores in register A)
> 
> With this I am able to run the following Ravi code:
> 
> local function x()
>  local j:double
>  for i=1,1000000000 do
>  j = j+1
>  end
>  return j
> end
> 
> Equivalent Lua code is:
> 
> local function x()
>  local j=0.0
>  for i=1,1000000000 do
>  j = j+1.0
>  end
>  return j
> end
> 
> 
> I ran another comparison with Luajit, Lua 5.3 and Ravi:
> 
> C:\github\ravi\ravi-tests>\luajit\luajit.exe fornum_test2.lua
> 1000000000
> time taken      0.93
> 
> C:\github\ravi\ravi-tests>\lua-5.3.0\src\build\Release\lua.exe fornum_test2.lua
> 1000000000.0
> time taken      9.746
> 
> C:\github\ravi\ravi-tests>..\build\Debug\lua.exe fornum_test2.ravi
> 1000000000.0
> time taken      2.782
> 
> C:\github\ravi\ravi-tests>\luajit\luajit.exe fornum_test2.lua
> 1000000000
> time taken      0.946
> 
> C:\github\ravi\ravi-tests>\lua-5.3.0\src\build\Release\lua.exe fornum_test2.lua
> 1000000000.0
> time taken      9.667
> 
> C:\github\ravi\ravi-tests>..\build\Debug\lua.exe fornum_test2.ravi
> 1000000000.0
> time taken      2.786
> 
> C:\github\ravi\ravi-tests>\luajit\luajit.exe fornum_test2.lua
> 1000000000
> time taken      0.947
> 
> C:\github\ravi\ravi-tests>\lua-5.3.0\src\build\Release\lua.exe fornum_test2.lua
> 1000000000.0
> time taken      9.57
> 
> C:\github\ravi\ravi-tests>..\build\Debug\lua.exe fornum_test2.ravi
> 1000000000.0
> time taken      2.829
>