mirror of https://github.com/minetest/minetest.git
39 lines
1.3 KiB
Markdown
39 lines
1.3 KiB
Markdown
# Miscellaneous
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## Profiling Minetest on Linux
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We will be using a tool called "perf", which you can get by installing `perf` or `linux-perf` or `linux-tools-common`.
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To get usable results you need to build Minetest with debug symbols
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(`-DCMAKE_BUILD_TYPE=RelWithDebInfo` or `-DCMAKE_BUILD_TYPE=Debug`).
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Run the client (or server) like this and do whatever you wanted to test:
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```bash
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perf record -z --call-graph dwarf -- ./bin/minetest
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```
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This will leave a file called "perf.data".
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You can open this file with perf built-in tools but much more interesting
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is the visualization using a GUI tool: **[Hotspot](https://github.com/KDAB/hotspot)**.
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It will give you flamegraphs, per-thread, per-function views and much more.
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### Remote Profiling
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Attach perf to your running server, press *^C* to stop:
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```bash
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perf record -z --call-graph dwarf -F 400 -p "$(pidof minetestserver)"
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```
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Collect a copy of the required libraries/executables:
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```bash
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perf buildid-list | grep -Eo '/[^ ]+(minetestserver|\.so)[^ ]*$' | \
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tar -cvahf debug.tgz --files-from=- --ignore-failed-read
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```
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Give both files to the developer and also provide:
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* Linux distribution and version
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* commit the source was built from and/or modified source code (if applicable)
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Hotspot will resolve symbols correctly when pointing the sysroot option at the collected libs.
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