Profile LDAP SASL bind performance

saslprof.py

#!/usr/bin/python3
import collections
import configparser
import time
import socket

import ldap
import ldap.sasl

SASL_GSSAPI = ldap.sasl.sasl({}, 'GSSAPI')
SASL_GSS_SPNEGO = ldap.sasl.sasl({}, 'GSS-SPNEGO')

METH = SASL_GSSAPI

with open("/etc/ipa/default.conf") as f:
    cfg = configparser.RawConfigParser()
    cfg.read_file(f)

URI = cfg.get("global", "ldap_uri")
assert URI.startswith("ldapi://")

def profile(uri, meth):
    conn = ldap.initialize(uri)
    conn.whoami_s()  # start connection
    start = time.perf_counter()
    try:
        conn.sasl_interactive_bind_s('', meth)
        return time.perf_counter() - start
    finally:
        conn.unbind()

# acquire service ticket
profile(URI, METH)

ctr = collections.Counter()
for i in range(2000):
    dur = profile(URI, METH)
    dur = round(dur * 1000)
    ctr.update({dur: 1})
    # print(f"{dur}ms")
    if dur > 500:
        c = "O"
    elif dur > 20:
        c = "x"
    else:
        c = "."
    print(c, end="", flush=True)

print()
for dur, count in sorted(ctr.items()):
    print(f"{dur}ms\t{count}")