4 Lua profiling

whosit edited this page 2023-06-29 21:13:18 +00:00

Table of Contents

• Using lua profilers (TODO)
• Using linux perf tool to profile minetest

Using lua profilers (TODO)

Using linux perf tool to profile minetest

1. Compile LuaJIT using LUAJIT_USE_PERFTOOLS flag:

make CFLAGS="-g -DLUAJIT_USE_PERFTOOLS"

2. Run server using LD_PRELOAD to override the installed luajit library:

LD_PRELOAD=<your-path-here>/LuaJIT/src/libluajit.so ./bin/minetestserver

3. run perf

perf record -Fmax -g -p `pgrep minetestserver`

4. examine the output:

perf report

The output will now have [JIT] records with file names and line numbers of lua code.