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Merged
pull merged 2 commits into from
Mar 19, 2026
Merged

[pull] master from ruby:master #866

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ea5aae0
yjit_perf.py: Fix the script for the latest perf format
k0kubun Mar 19, 2026
8003f48
yjit_perf.py: Generalize the script for ZJIT
k0kubun Mar 18, 2026
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4 changes: 2 additions & 2 deletions doc/jit/yjit.md
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Original file line number Diff line number Diff line change
Expand Up @@ -525,7 +525,7 @@ PERF=record ruby --yjit-perf=codegen -Iharness-perf benchmarks/lobsters/benchmar

# Aggregate results
perf script > /tmp/perf.txt
../ruby/misc/yjit_perf.py /tmp/perf.txt
../ruby/misc/jit_perf.py /tmp/perf.txt
```

#### Building perf with Python support
Expand All @@ -543,5 +543,5 @@ make
make install

# Aggregate results
perf script -s ../ruby/misc/yjit_perf.py
perf script -s ../ruby/misc/jit_perf.py
```
9 changes: 5 additions & 4 deletions misc/yjit_perf.py → misc/jit_perf.py
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Expand Up @@ -22,10 +22,11 @@ def categorize_symbol(dso, symbol):
return '[sha256]'
elif symbol.startswith('[JIT] gen_send'):
return '[JIT send]'
elif symbol.startswith('[JIT]'):
# TODO: Stop using zjit:: as the prefix for JIT code. Rust modules and JIT code should use different namespaces.
elif symbol.startswith('[JIT]') or (symbol.startswith('zjit::') and '@') or symbol == 'zjit::ZJIT entry trampoline':
return '[JIT code]'
elif '::' in symbol or symbol.startswith('yjit::') or symbol.startswith('_ZN4yjit'):
return '[YJIT compile]'
elif '::' in symbol or symbol.startswith('_ZN4yjit') or symbol.startswith('_ZN4zjit'):
return '[JIT compile]'
elif symbol.startswith('rb_vm_') or symbol.startswith('vm_') or symbol in {
"rb_call0", "callable_method_entry_or_negative", "invoke_block_from_c_bh",
"rb_funcallv_scope", "setup_parameters_complex", "rb_yield"}:
Expand Down Expand Up @@ -108,7 +109,7 @@ def trace_end():
row = line.split(maxsplit=6)

period = row[3] # "1212775"
symbol, dso = row[6].split(" (") # "[JIT] getlocal_WC_0+0x0", "/tmp/perf-78207.map)\n"
symbol, dso = row[6].rsplit(" (", 1) # "[JIT] getlocal_WC_0+0x0", "/tmp/perf-78207.map)\n"
symbol = symbol.split("+")[0] # "[JIT] getlocal_WC_0"
dso = dso.split(")")[0] # "/tmp/perf-78207.map"

Expand Down