diff options
Diffstat (limited to 'misc/yjit_perf.py')
-rwxr-xr-x | misc/yjit_perf.py | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/misc/yjit_perf.py b/misc/yjit_perf.py new file mode 100755 index 0000000000..61434e5eb4 --- /dev/null +++ b/misc/yjit_perf.py @@ -0,0 +1,116 @@ +#!/usr/bin/env python3 +import os +import sys +from collections import Counter, defaultdict +import os.path + +# Aggregating cycles per symbol and dso +total_cycles = 0 +category_cycles = Counter() +detailed_category_cycles = defaultdict(Counter) +categories = set() + +def truncate_symbol(symbol, max_length=50): + """ Truncate the symbol name to a maximum length """ + return symbol if len(symbol) <= max_length else symbol[:max_length-3] + '...' + +def categorize_symbol(dso, symbol): + """ Categorize the symbol based on the defined criteria """ + if dso == 'sqlite3_native.so': + return '[sqlite3]' + elif 'SHA256' in symbol: + return '[sha256]' + elif symbol.startswith('[JIT] gen_send'): + return '[JIT send]' + elif symbol.startswith('[JIT]'): + return '[JIT code]' + elif '::' in symbol or symbol.startswith('yjit::') or symbol.startswith('_ZN4yjit'): + return '[YJIT 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"}: + return '[interpreter]' + elif symbol.startswith('rb_hash_') or symbol.startswith('hash_'): + return '[rb_hash_*]' + elif symbol.startswith('rb_ary_') or symbol.startswith('ary_'): + return '[rb_ary_*]' + elif symbol.startswith('rb_str_') or symbol.startswith('str_'): + return '[rb_str_*]' + elif symbol.startswith('rb_sym') or symbol.startswith('sym_'): + return '[rb_sym_*]' + elif symbol.startswith('rb_st_') or symbol.startswith('st_'): + return '[rb_st_*]' + elif symbol.startswith('rb_ivar_') or 'shape' in symbol: + return '[ivars]' + elif 'match' in symbol or symbol.startswith('rb_reg') or symbol.startswith('onig'): + return '[regexp]' + elif 'alloc' in symbol or 'free' in symbol or 'gc' in symbol: + return '[GC]' + elif 'pthread' in symbol and 'lock' in symbol: + return '[pthread lock]' + else: + return symbol # Return the symbol itself for uncategorized symbols + +def process_event(event): + global total_cycles, category_cycles, detailed_category_cycles, categories + + full_dso = event.get("dso", "Unknown_dso") + dso = os.path.basename(full_dso) + symbol = event.get("symbol", "[unknown]") + cycles = event["sample"]["period"] + total_cycles += cycles + + category = categorize_symbol(dso, symbol) + category_cycles[category] += cycles + detailed_category_cycles[category][(dso, symbol)] += cycles + + if category.startswith('[') and category.endswith(']'): + categories.add(category) + +def trace_end(): + if total_cycles == 0: + return + + print("Aggregated Event Data:") + print("{:<20} {:<50} {:>20} {:>15}".format("[dso]", "[symbol or category]", "[top-most cycle ratio]", "[num cycles]")) + + for category, cycles in category_cycles.most_common(): + ratio = (cycles / total_cycles) * 100 + dsos = {dso for dso, _ in detailed_category_cycles[category]} + dso_display = next(iter(dsos)) if len(dsos) == 1 else "Multiple DSOs" + print("{:<20} {:<50} {:>20.2f}% {:>15}".format(dso_display, truncate_symbol(category), ratio, cycles)) + + # Category breakdown + for category in categories: + symbols = detailed_category_cycles[category] + category_total = sum(symbols.values()) + category_ratio = (category_total / total_cycles) * 100 + print(f"\nCategory: {category} ({category_ratio:.2f}%)") + print("{:<20} {:<50} {:>20} {:>15}".format("[dso]", "[symbol]", "[top-most cycle ratio]", "[num cycles]")) + for (dso, symbol), cycles in symbols.most_common(): + symbol_ratio = (cycles / category_total) * 100 + print("{:<20} {:<50} {:>20.2f}% {:>15}".format(dso, truncate_symbol(symbol), symbol_ratio, cycles)) + +# There are two ways to use this script: +# 1) perf script -s misc/yjit_perf.py -- native interface +# 2) perf script > perf.txt && misc/yjit_perf.py perf.txt -- hack, which doesn't require perf with Python support +# +# In both cases, __name__ is "__main__". The following code implements (2) when sys.argv is 2. +if __name__ == "__main__" and len(sys.argv) == 2: + if len(sys.argv) != 2: + print("Usage: yjit_perf.py <filename>") + sys.exit(1) + + with open(sys.argv[1], "r") as file: + for line in file: + # [Example] + # ruby 78207 3482.848465: 1212775 cpu_core/cycles:P/: 5c0333f682e1 [JIT] getlocal_WC_0+0x0 (/tmp/perf-78207.map) + 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 = symbol.split("+")[0] # "[JIT] getlocal_WC_0" + dso = dso.split(")")[0] # "/tmp/perf-78207.map" + + process_event({"dso": dso, "symbol": symbol, "sample": {"period": int(period)}}) + trace_end() |