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This commit is contained in:
Pascal Engélibert 2025-11-21 17:05:59 +01:00
commit 0335dac6d4
4 changed files with 378 additions and 157 deletions
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# Extract some data from profile flamegraphs produced by cargo flamegraph
import re, sys
FUNCTIONS = {
"rustls::record_layer::RecordLayer::decrypt_incoming": "decrypt",
"<[a-zA-Z0-9_:]+ as rustls::crypto::cipher::MessageEncrypter>::encrypt": "encrypt",
"<[a-zA-Z0-9_:]+ as rustls::crypto::tls13::Hkdf>::expander_for_okm": "hkdf",
"<[a-zA-Z0-9_:]+ as rustls::crypto::SecureRandom>::fill": "rand",
"<[a-zA-Z0-9_:]+ as rustls::crypto::SupportedKxGroup>::start": "kx",
"<[a-zA-Z0-9_:]+ as rustls::crypto::hash::Hash>::start": "hash",
"<[a-zA-Z0-9_:]+ as rustls::crypto::hash::Context>::finish": "hash",
"<[a-zA-Z0-9_:]+ as rustls::crypto::hash::Context>::update": "hash",
"<[a-zA-Z0-9_:]+ as rustls::crypto::hash::Context>::fork_finish": "hash",
"<[a-zA-Z0-9_:]+ as rustls::crypto::tls13::Hkdf>::extract_from_secret": "hkdf",
"<[a-zA-Z0-9_:]+ as rustls::crypto::ActiveKeyExchange>::complete": "kx",
"<[a-zA-Z0-9_:]+ as rustls::crypto::tls13::HkdfExpander>::hash_len": "hkdf",
"<[a-zA-Z0-9_:]+ as rustls::crypto::tls13::HkdfExpander>::expand_slice": "hkdf",
"<[a-zA-Z0-9_:]+ as rustls::crypto::tls13::Hkdf>::extract_from_secret": "hkdf",
"<[a-zA-Z0-9_:]+ as rustls::crypto::tls13::Hkdf>::hmac_sign": "hkdf",
"ring::hkdf::fill_okm": "hkdf",
"aws_lc_0_32_2_HKDF": "hkdf",
"rustls_openssl::tls13::<impl rustls::crypto::cipher::Tls13AeadAlgorithm for rustls_openssl::aead::Algorithm>::encrypter": "encrypt",
"rustls::crypto::aws_lc_rs::tls13::AeadAlgorithm::encrypter": "encrypt",
"rustls::crypto::aws_lc_rs::tls13::AeadAlgorithm::decrypter": "decrypt",
}
def extract_function(data, name):
r = re.compile(name.replace("<", "&lt;").replace(">", "&gt;") + " \\(([0-9,]+) samples, ([0-9.]+)%\\)")
samples = 0
percents = 0.0
for match in r.finditer(data):
samples += int(match.group(1).replace(",", ""))
percents += float(match.group(2))
return (samples, percents)
if __name__ == "__main__":
filename = sys.argv[1]
f = open(filename, "r")
c = f.read()
results = {}
for function in FUNCTIONS:
samples, percents = extract_function(c, function)
title = FUNCTIONS[function]
if title not in results:
results[title] = [0, 0.0]
results[title][0] += samples
results[title][1] += percents
for title in results:
print(title, results[title])