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3proxy/bench/bench.py
Vladimir Dubrovin c13c048f3f Benchmarks: measure the proxy under stress, add results 
bench.py:
- the proxy gets one CPU, the client four, the origin three (8 CPUs), so
  the proxy is what runs out first
- CPU time is the busy time of a role's CPUs from /proc/stat, softirqs
  included: with IRQ time accounting the cgroup's own figure leaves out
  much of the network work
- every run records which side set its pace (proxy, client, origin), by
  the busy share of the role's CPUs and of its busiest thread
- a 50 KB keep-alive scenario with 2000 clients
- haproxy with splice: haproxy::splice-auto and haproxy::splice
- wrk timeouts counted apart from errors; tools found by absolute path;
  leftovers of an interrupted run are cleaned up

report.py turns runs into Markdown tables: throughput, the proxy's CPU
per gigabyte or per request, its peak memory, splice and copying proxies
in groups of their own, the best of each group marked.

RESULTS.md has the comparison of 0.9.4, 1.0.1, devel, nginx and haproxy,
with and without splice, on an Apple M4 and an Intel Skylake virtual
machine, and how it was measured; data/ has the measurements.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-11 22:04:47 +03:00

726 lines
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#!/usr/bin/env python3
"""Compares the speed and the cost of proxies on Linux: 3proxy versions, and
other servers doing the same job.
The client, the proxy and the origin each run in a network namespace of their
own, linked by veth pairs, and in a cgroup of their own pinned to separate
CPUs, so they neither share a loopback nor take CPU from each other, and the
proxy's CPU time and memory can be read on their own. See README.md.
Needs root, iproute2, iperf3, wrk and nginx (the origin); haproxy only when
it is one of the proxies compared.
sudo bench/bench.py --proxy 3proxy:bench/bin/3proxy-1.0.1 \\
--proxy 3proxy:bench/bin/3proxy-devel --proxy nginx --proxy none
"""
import argparse
import csv
import datetime
import json
import os
import re
import resource
import shutil
import signal
import statistics
import subprocess
import sys
import tempfile
import threading
import time
CG = "/sys/fs/cgroup/3proxy-bench"
# client 10.0.1.2 -- 10.0.1.1 proxy 10.0.2.1 -- 10.0.2.2 origin
CLI_ADDR, PRX_IN, PRX_OUT, SRV_ADDR = "10.0.1.2", "10.0.1.1", "10.0.2.1", "10.0.2.2"
HTTP_PORT, TCP_PORT, ORIGIN_HTTP, ORIGIN_TCP = 3128, 5201, 8080, 5201
FILES = {"1k": 1024, "50k": 50 * 1024, "100k": 100 * 1024, "1m": 1024 * 1024}
# name: (kind, parameters)
SCENARIOS = {
"stream1": ("stream", {"streams": 1}),
"stream16": ("stream", {"streams": 16}),
"stream1-down": ("stream", {"streams": 1, "reverse": True}),
"http-ka-1k": ("http", {"file": "1k", "conns": 64}),
"http-ka-1m": ("http", {"file": "1m", "conns": 16}),
"http-ka-50k-2000": ("http", {"file": "50k", "conns": 2000}),
"http-close-1k": ("http", {"file": "1k", "conns": 64, "close": True}),
}
TOOLS = {}
def tool(name):
"""A tool by its absolute path: sudo's secure_path may leave out where
it was installed, /usr/local/bin for a wrk built by hand."""
if name not in TOOLS:
path = shutil.which(name) or shutil.which(
name, path="/usr/local/bin:/usr/local/sbin:/usr/sbin:/usr/bin")
if not path:
sys.exit(f"{name} not found")
TOOLS[name] = path
return TOOLS[name]
def sh(cmd, check=True, **kw):
return subprocess.run(cmd, shell=True, check=check, text=True,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kw).stdout
def cpulist(spec):
cpus = []
for part in spec.split(","):
a, _, b = part.partition("-")
cpus.extend(range(int(a), int(b or a) + 1))
return cpus
def cpumask(spec):
return "%x" % sum(1 << c for c in cpulist(spec))
# --- namespaces --------------------------------------------------------------
def net_up(args):
net_down()
for ns in ("bcli", "bprx", "bsrv"):
sh(f"ip netns add {ns}")
sh(f"ip -n {ns} link set lo up")
sh("ip link add bc0 netns bcli type veth peer name bp0 netns bprx")
sh("ip link add bp1 netns bprx type veth peer name bs0 netns bsrv")
for ns, dev, addr in (("bcli", "bc0", CLI_ADDR), ("bprx", "bp0", PRX_IN),
("bprx", "bp1", PRX_OUT), ("bsrv", "bs0", SRV_ADDR)):
sh(f"ip -n {ns} addr add {addr}/24 dev {dev}")
sh(f"ip -n {ns} link set {dev} mtu {args.mtu} up")
# the direct baseline goes through the proxy namespace, routed by the
# kernel
sh(f"ip -n bcli route add 10.0.2.0/24 via {PRX_IN}")
sh(f"ip -n bsrv route add 10.0.1.0/24 via {PRX_OUT}")
sh("ip netns exec bprx sysctl -qw net.ipv4.ip_forward=1")
for ns in ("bcli", "bprx", "bsrv"):
sh(f"ip netns exec {ns} sysctl -qw net.core.somaxconn=65535 "
"net.ipv4.tcp_max_syn_backlog=65535 net.ipv4.tcp_tw_reuse=1 "
"net.ipv4.ip_local_port_range='1024 65535'")
# A veth hands what it receives to the CPU that sent it; steer it to the
# receiver's own CPUs instead.
for ns, dev, role in (("bcli", "bc0", "cli"), ("bprx", "bp0", "prx"),
("bprx", "bp1", "prx"), ("bsrv", "bs0", "srv")):
sh(f"ip netns exec {ns} sh -c 'echo {cpumask(args.cpus[role])} "
f"> /sys/class/net/{dev}/queues/rx-0/rps_cpus'", check=False)
if args.netem:
for ns, dev in (("bcli", "bc0"), ("bprx", "bp0")):
sh(f"ip netns exec {ns} tc qdisc add dev {dev} root netem {args.netem}")
def net_down():
for ns in ("bcli", "bprx", "bsrv"):
sh(f"ip netns del {ns}", check=False)
# --- cgroups -----------------------------------------------------------------
def cg_write(path, value):
with open(path, "w") as f:
f.write(value)
def cg_read(path):
with open(path) as f:
return f.read()
def cg_up(args):
os.makedirs(CG, exist_ok=True)
cg_write("/sys/fs/cgroup/cgroup.subtree_control", "+cpuset +cpu +memory")
cg_write(f"{CG}/cgroup.subtree_control", "+cpuset +cpu +memory")
for role in ("cli", "srv"):
cg_make(role, args.cpus[role])
def cg_make(role, cpus):
path = f"{CG}/{role}"
os.makedirs(path, exist_ok=True)
cg_write(f"{path}/cpuset.cpus", cpus)
return path
def cg_remove(role):
path = f"{CG}/{role}"
if not os.path.isdir(path):
return
for _ in range(50):
try:
os.rmdir(path)
return
except OSError:
time.sleep(0.1)
def cg_kill(role):
"""Whatever is left in a role's cgroup, e.g. after an interrupted run."""
try:
pids = cg_read(f"{CG}/{role}/cgroup.procs").split()
except OSError:
return
for pid in pids:
try:
os.kill(int(pid), signal.SIGKILL)
except ProcessLookupError:
pass
def cg_down():
for role in ("cli", "prx", "srv"):
cg_kill(role)
cg_remove(role)
try:
os.rmdir(CG)
except OSError:
pass
def cg_usage(role):
"""CPU seconds used so far by everything in the cgroup."""
for line in cg_read(f"{CG}/{role}/cpu.stat").splitlines():
name, value = line.split()
if name == "usage_usec":
return int(value) / 1e6
return 0.0
TICK = os.sysconf("SC_CLK_TCK")
def cpu_busy():
"""Busy and total ticks per CPU. Busy counts interrupts and softirqs too:
a kernel with IRQ time accounting leaves them out of the cgroup's CPU
time, and that is where much of the network work is done."""
busy = {}
with open("/proc/stat") as f:
for line in f:
if not line.startswith("cpu") or line.startswith("cpu "):
continue
name, *v = line.split()
v = [int(x) for x in v]
# user nice system idle iowait irq softirq steal
busy[int(name[3:])] = (v[0] + v[1] + v[2] + v[5] + v[6] + v[7], sum(v[:8]))
return busy
def role_busy(before, after, cpus):
"""Busy seconds of a role's CPUs, and the share of them that was busy."""
b = t = 0
for c in cpus:
b += after[c][0] - before[c][0]
t += after[c][1] - before[c][1]
return b / TICK, (b / t if t else 0.0)
def thread_times(role):
"""CPU ticks per thread of everything in a role's cgroup."""
times = {}
try:
tids = cg_read(f"{CG}/{role}/cgroup.threads").split()
except OSError:
return times
for tid in tids:
try:
with open(f"/proc/{tid}/stat") as f:
v = f.read().rsplit(")", 1)[1].split()
times[tid] = int(v[11]) + int(v[12])
except (OSError, IndexError, ValueError):
pass
return times
def busiest_thread(before, after, wall):
"""The busiest thread's share of one CPU: one thread at 100% is a limit
however many CPUs its role has (iperf3 runs a stream in a thread)."""
top = 0
for tid, t in after.items():
top = max(top, t - before.get(tid, 0))
return top / TICK / wall if wall else 0.0
def cg_peak(role):
try:
return int(cg_read(f"{CG}/{role}/memory.peak")) / 2**20
except OSError:
return float("nan")
# --- processes ---------------------------------------------------------------
def spawn(ns, role, argv, log):
"""Start a process in a namespace and a cgroup; threads it starts stay
there with it."""
procs = f"{CG}/{role}/cgroup.procs"
def enter():
cg_write(procs, str(os.getpid()))
resource.setrlimit(resource.RLIMIT_NOFILE, (1048576, 1048576))
os.setsid()
return subprocess.Popen(["ip", "netns", "exec", ns] + argv, stdout=log,
stderr=subprocess.STDOUT, preexec_fn=enter)
LAST_CLIENT_THREAD = [0.0]
def run_in(ns, role, argv, timeout):
"""Run a load generator to its end. Its busiest thread's share of a CPU
is kept in LAST_CLIENT_THREAD, read just before it exits."""
p = spawn(ns, role, argv, subprocess.PIPE)
t0 = time.time()
top = {}
buf = []
reader = threading.Thread(target=lambda: buf.append(p.stdout.read()))
reader.start()
while p.poll() is None:
for tid, t in thread_times(role).items():
top[tid] = t
time.sleep(0.5)
reader.join(timeout)
wall = time.time() - t0
LAST_CLIENT_THREAD[0] = max(top.values()) / TICK / wall if top and wall else 0.0
return (buf[0] if buf else b"").decode("utf-8", "replace")
def stop(p):
if p and p.poll() is None:
try:
os.killpg(p.pid, signal.SIGTERM)
p.wait(timeout=5)
except (ProcessLookupError, subprocess.TimeoutExpired):
try:
os.killpg(p.pid, signal.SIGKILL)
except ProcessLookupError:
pass
p.wait()
def wait_port(ns, addr, port, timeout=10):
deadline = time.time() + timeout
while time.time() < deadline:
# /dev/tcp is bash's
if subprocess.run(["ip", "netns", "exec", ns, "bash", "-c",
f"exec 3<>/dev/tcp/{addr}/{port}"],
stderr=subprocess.DEVNULL).returncode == 0:
return True
time.sleep(0.1)
return False
# --- the origin --------------------------------------------------------------
def origin_up(args, work):
www = os.path.join(work, "www")
os.makedirs(www, exist_ok=True)
for name, size in FILES.items():
with open(os.path.join(www, name), "wb") as f:
f.write(b"x" * size)
n = len(cpulist(args.cpus["srv"]))
conf = os.path.join(work, "origin.conf")
with open(conf, "w") as f:
f.write(f"""daemon off;
worker_processes {n};
pid {work}/origin.pid;
error_log {work}/origin.err;
worker_rlimit_nofile 1048576;
events {{ worker_connections 65536; }}
http {{
access_log off;
sendfile on;
tcp_nopush on;
keepalive_requests 1000000;
keepalive_timeout 120s;
server {{
listen {SRV_ADDR}:{ORIGIN_HTTP} backlog=65535 reuseport;
root {www};
default_type application/octet-stream;
}}
}}
""")
log = open(os.path.join(work, "origin.out"), "w")
procs = [spawn("bsrv", "srv", [tool("nginx"), "-c", conf, "-p", work], log),
spawn("bsrv", "srv", [tool("iperf3"), "-s", "-B", SRV_ADDR, "-p", str(ORIGIN_TCP)], log)]
if not (wait_port("bsrv", SRV_ADDR, ORIGIN_HTTP) and wait_port("bsrv", SRV_ADDR, ORIGIN_TCP)):
for p in procs:
stop(p)
sys.exit("the origin did not start, see " + work)
return procs
# --- proxies -----------------------------------------------------------------
def proxy_conf(kind, work, ncpu, label, opts=""):
"""Configuration for one proxy: an HTTP proxy on HTTP_PORT and a TCP relay
on TCP_PORT, both towards the origin. Returns the argv. opts are added to
both 3proxy services, e.g. -s0 to keep a version from using splice()."""
if kind == "3proxy":
conf = os.path.join(work, f"{label}.cfg")
with open(conf, "w") as f:
f.write(f"""maxconn 100000
auth none
proxy {opts} -i{PRX_IN} -e{PRX_OUT} -p{HTTP_PORT}
tcppm {opts} -i{PRX_IN} -e{PRX_OUT} {TCP_PORT} {SRV_ADDR} {ORIGIN_TCP}
""")
return [conf]
if kind == "nginx":
conf = os.path.join(work, f"{label}.conf")
with open(conf, "w") as f:
# distributions build the stream module as a dynamic one
load = ""
for d in ("/usr/lib/nginx/modules", "/usr/lib64/nginx/modules"):
stream = os.path.join(d, "ngx_stream_module.so")
if os.path.exists(stream):
load = f"load_module {stream};\n"
break
f.write(f"""{load}daemon off;
worker_processes {ncpu};
pid {work}/{label}.pid;
error_log {work}/{label}.err;
worker_rlimit_nofile 1048576;
events {{ worker_connections 65536; }}
http {{
access_log off;
upstream origin {{ server {SRV_ADDR}:{ORIGIN_HTTP}; keepalive 1024; }}
server {{
listen {PRX_IN}:{HTTP_PORT} backlog=65535 reuseport;
keepalive_requests 1000000;
location / {{
proxy_pass http://origin;
proxy_http_version 1.1;
proxy_set_header Connection "";
proxy_bind {PRX_OUT};
}}
}}
}}
stream {{
server {{
listen {PRX_IN}:{TCP_PORT} backlog=65535 reuseport;
proxy_pass {SRV_ADDR}:{ORIGIN_TCP};
proxy_bind {PRX_OUT};
}}
}}
""")
return ["-c", conf, "-p", work]
if kind == "haproxy":
# splice-auto: haproxy's heuristic, splicing a direction once reads
# fill its buffer three times in a row; splice: both directions always
splice = {"": "", "splice-auto": " option splice-auto\n",
"splice": " option splice-request\n option splice-response\n"}
if opts not in splice:
sys.exit("haproxy options: splice-auto or splice")
splice = splice[opts]
conf = os.path.join(work, f"{label}.cfg")
with open(conf, "w") as f:
f.write(f"""global
nbthread {ncpu}
maxconn 200000
defaults
{splice} timeout connect 5s
timeout client 60s
timeout server 60s
frontend http
mode http
bind {PRX_IN}:{HTTP_PORT}
option http-keep-alive
default_backend origin
backend origin
mode http
http-reuse always
source {PRX_OUT}
server origin {SRV_ADDR}:{ORIGIN_HTTP}
listen tcp
mode tcp
bind {PRX_IN}:{TCP_PORT}
source {PRX_OUT}
server origin {SRV_ADDR}:{ORIGIN_TCP}
""")
return ["-f", conf]
raise ValueError(kind)
class Proxy:
def __init__(self, spec):
kind, _, path = spec.partition(":")
self.kind = kind
self.opts = ""
if kind == "3proxy":
path, _, self.opts = path.partition(":")
if not path:
sys.exit("--proxy 3proxy:<binary>[:<service options>]")
self.binary = os.path.abspath(path)
self.label = os.path.basename(path) + (self.opts.replace(" ", "") if self.opts else "")
elif kind in ("nginx", "haproxy"):
path, _, self.opts = path.partition(":")
if kind == "nginx" and self.opts:
sys.exit("nginx takes no options (it does not use splice() at all)")
self.binary = path or tool(kind)
self.label = kind + ("-" + self.opts if self.opts else "")
elif kind == "none":
self.binary = None
self.label = "direct"
else:
sys.exit("unknown proxy " + spec)
def start(self, args, work):
cg_remove("prx")
cg_make("prx", args.cpus["prx"])
if self.kind == "none":
return None
argv = [self.binary] + proxy_conf(self.kind, work, len(cpulist(args.cpus["prx"])),
self.label, self.opts)
log = open(os.path.join(work, self.label + ".out"), "a")
p = spawn("bprx", "prx", argv, log)
if not (wait_port("bcli", PRX_IN, HTTP_PORT) and wait_port("bcli", PRX_IN, TCP_PORT)):
stop(p)
sys.exit(f"{self.label} did not start, see {work}")
return p
# --- load --------------------------------------------------------------------
WRK_SCRIPT = """
local path, close = "%s", %s
local headers = {["Host"] = "%s:%d"}
if close then headers["Connection"] = "close" end
local req = wrk.format("GET", path, headers)
request = function() return req end
"""
UNITS = {"": 1, "k": 1e3, "K": 1e3, "M": 1e6, "G": 1e9, "KB": 2**10, "MB": 2**20,
"GB": 2**30, "B": 1}
def to_ms(text):
m = re.match(r"([\d.]+)(us|ms|s|m)", text)
v, u = float(m.group(1)), m.group(2)
return v * {"us": 1e-3, "ms": 1, "s": 1e3, "m": 6e4}[u]
def run_http(proxy, params, args, work):
direct = proxy.kind == "none"
host = SRV_ADDR if direct else PRX_IN
port = ORIGIN_HTTP if direct else HTTP_PORT
path = "/" + params["file"]
if not direct:
path = f"http://{SRV_ADDR}:{ORIGIN_HTTP}{path}"
script = os.path.join(work, "wrk.lua")
with open(script, "w") as f:
f.write(WRK_SCRIPT % (path, "true" if params.get("close") else "false",
SRV_ADDR, ORIGIN_HTTP))
threads = len(cpulist(args.cpus["cli"]))
conns = max(params["conns"], threads)
out = run_in("bcli", "cli", [tool("wrk"), "-t", str(threads), "-c", str(conns),
"-d", f"{args.duration}s", "--latency", "-s", script,
f"http://{host}:{port}/"], args.duration + 30)
res = {"raw": out}
m = re.search(r"(\d+) requests in", out)
res["requests"] = int(m.group(1)) if m else 0
m = re.search(r"Requests/sec:\s+([\d.]+)", out)
res["rate"] = float(m.group(1)) if m else 0.0
m = re.search(r"Transfer/sec:\s+([\d.]+)(\w+)", out)
res["gbit"] = float(m.group(1)) * UNITS[m.group(2)] * 8 / 1e9 if m else 0.0
for pct in ("50", "99"):
m = re.search(rf"^\s+{pct}%\s+(\S+)", out, re.M)
res[f"p{pct}_ms"] = to_ms(m.group(1)) if m else float("nan")
errors = 0
res["timeouts"] = 0
m = re.search(r"Socket errors: connect (\d+), read (\d+), write (\d+), timeout (\d+)", out)
if m:
errors += sum(int(x) for x in m.groups()[:3])
# requests slower than wrk's 2 seconds: a latency tail, not a failure
res["timeouts"] = int(m.group(4))
m = re.search(r"Non-2xx or 3xx responses: (\d+)", out)
if m:
errors += int(m.group(1))
if not res["requests"]:
errors += 1 # wrk did not run, or reported nothing
res["errors"] = errors
res["retrans"] = 0
res["bytes"] = res["gbit"] * 1e9 / 8 * args.duration
return res
def run_stream(proxy, params, args, work):
direct = proxy.kind == "none"
host = SRV_ADDR if direct else PRX_IN
port = ORIGIN_TCP if direct else TCP_PORT
argv = [tool("iperf3"), "-c", host, "-p", str(port), "-t", str(args.duration),
"-P", str(params["streams"]), "-J"]
if params.get("reverse"):
argv.append("-R")
out = run_in("bcli", "cli", argv, args.duration + 30)
res = {"raw": out, "rate": float("nan"), "p50_ms": float("nan"),
"p99_ms": float("nan"), "requests": 0, "errors": 0, "retrans": 0, "timeouts": 0}
try:
j = json.loads(out)
s = j["end"]["sum_received"]
res["gbit"] = s["bits_per_second"] / 1e9
res["bytes"] = s["bytes"]
res["retrans"] = j["end"].get("sum_sent", {}).get("retransmits", 0)
if "error" in j:
res["errors"] = 1
except (ValueError, KeyError):
res["gbit"], res["bytes"], res["errors"] = 0.0, 0, 1
return res
BUSY = 0.9
def measure(proxy, scenario, args, work):
kind, params = SCENARIOS[scenario]
p = proxy.start(args, work)
try:
time.sleep(0.5)
task0 = cg_usage("prx")
cpu0 = cpu_busy()
thr0 = {r: thread_times(r) for r in ("cli", "srv")}
t0 = time.time()
res = (run_http if kind == "http" else run_stream)(proxy, params, args, work)
res["cli_thread"] = LAST_CLIENT_THREAD[0]
wall = time.time() - t0
cpu1 = cpu_busy()
# threads of the load generator have ended by now: take what the
# client's cgroup reports for the run instead
thr1 = {r: thread_times(r) for r in ("cli", "srv")}
res["prx_task_s"] = cg_usage("prx") - task0
res["peak_mb"] = cg_peak("prx")
finally:
stop(p)
for r in ("cli", "prx", "srv"):
# the busy time of the role's CPUs, its own processes and the network
# work done there for it
res[f"{r}_cpu_s"], res[f"{r}_util"] = role_busy(cpu0, cpu1, cpulist(args.cpus[r]))
res["srv_thread"] = busiest_thread(thr0["srv"], thr1["srv"], wall)
# Which side set the pace: a role whose CPUs, or a single thread of it,
# were busy all the time. A run limited by the client or the origin says
# only that the proxy can do at least this much.
if res["srv_util"] >= BUSY or res["srv_thread"] >= BUSY:
res["bound"] = "origin"
elif res["cli_util"] >= BUSY or res["cli_thread"] >= BUSY:
res["bound"] = "client"
elif res["prx_util"] >= BUSY:
res["bound"] = "proxy"
else:
res["bound"] = "none"
gb = res["bytes"] / 1e9
res["cpu_s_per_gb"] = res["prx_cpu_s"] / gb if gb else float("nan")
res["cpu_us_per_req"] = (res["prx_cpu_s"] * 1e6 / res["requests"]
if res["requests"] else float("nan"))
return res
# --- main --------------------------------------------------------------------
FIELDS = ["proxy", "scenario", "rep", "gbit", "rate", "p50_ms", "p99_ms", "errors", "timeouts", "retrans",
"prx_cpu_s", "prx_task_s", "cpu_s_per_gb", "cpu_us_per_req", "peak_mb",
"cli_util", "prx_util", "srv_util", "cli_thread", "srv_thread", "bound"]
def summary(rows):
keys = []
for r in rows:
if (r["proxy"], r["scenario"]) not in keys:
keys.append((r["proxy"], r["scenario"]))
cols = ["gbit", "rate", "p99_ms", "cpu_s_per_gb", "cpu_us_per_req", "peak_mb",
"prx_util", "cli_util", "srv_util", "errors"]
print("\nmedians (" + ", ".join(cols) + ")")
print("%-24s %-14s " % ("proxy", "scenario") + " ".join("%10s" % c[:10] for c in cols))
for proxy, scenario in sorted(keys, key=lambda k: (k[1], k[0])):
sel = [r for r in rows if r["proxy"] == proxy and r["scenario"] == scenario]
vals = []
for c in cols:
xs = [r[c] for r in sel if r[c] == r[c]]
vals.append("%10.3g" % statistics.median(xs) if xs else "%10s" % "-")
print("%-24s %-14s " % (proxy, scenario) + " ".join(vals))
def main():
ap = argparse.ArgumentParser(description=__doc__.split("\n\n")[0])
ap.add_argument("--proxy", action="append", required=True,
help="3proxy:<binary>[:<service options>], nginx[:<binary>], "
"haproxy[:<binary>[:splice-auto|splice]] "
"or none (the kernel routing, an upper bound); repeat")
ap.add_argument("--scenario", action="append", choices=sorted(SCENARIOS),
help="default: all")
ap.add_argument("--reps", type=int, default=3)
ap.add_argument("--duration", type=int, default=10, help="seconds per run")
ap.add_argument("--cpus", default="cli=0-3,prx=4,srv=5-7",
help="CPUs per role (default %(default)s)")
ap.add_argument("--mtu", type=int, default=1500)
ap.add_argument("--netem", help='netem on the client link, e.g. "delay 1ms rate 10gbit"')
ap.add_argument("--out", default="bench/results", help="directory for the CSV and logs")
args = ap.parse_args()
if os.geteuid():
sys.exit("needs root")
args.cpus = dict(x.split("=") for x in args.cpus.split(","))
proxies = [Proxy(s) for s in args.proxy]
scenarios = args.scenario or list(SCENARIOS)
# fail now rather than after the first scenarios
for name in ("nginx", "iperf3", "wrk"):
tool(name)
stamp = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
os.makedirs(args.out, exist_ok=True)
work = tempfile.mkdtemp(prefix="3proxy-bench-")
os.chmod(work, 0o755)
csvpath = os.path.join(args.out, f"{stamp}.csv")
rawpath = os.path.join(args.out, f"{stamp}.raw.txt")
with open(os.path.join(args.out, f"{stamp}.env.txt"), "w") as f:
f.write(" ".join(sys.argv) + "\n")
f.write(sh("uname -a; lscpu | head -20; nproc; "
"cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 2>/dev/null; "
f"{tool('iperf3')} --version | head -1; {tool('wrk')} -v 2>&1 | head -1; "
f"{tool('nginx')} -v 2>&1; "
"haproxy -v 2>/dev/null | head -1", check=False))
rows = []
origin = []
try:
net_up(args)
cg_up(args)
origin = origin_up(args, work)
with open(csvpath, "w", newline="") as f, open(rawpath, "w") as raw:
w = csv.DictWriter(f, FIELDS, extrasaction="ignore")
w.writeheader()
# Every repetition runs each proxy once, rotating the order, so a
# drift over time is shared by all of them.
for rep in range(args.reps):
for scenario in scenarios:
order = proxies[rep % len(proxies):] + proxies[:rep % len(proxies)]
for proxy in order:
res = measure(proxy, scenario, args, work)
res.update(proxy=proxy.label, scenario=scenario, rep=rep)
rows.append(res)
w.writerow(res)
f.flush()
raw.write(f"=== {proxy.label} {scenario} {rep}\n{res['raw']}\n")
print("%-24s %-14s rep %d: %7.2f Gbit/s %10.0f req/s proxy cpu %5.2fs "
"busy cli %3.0f%% prx %3.0f%% srv %3.0f%% (threads %3.0f%%/%3.0f%%) "
"bound %-6s errors %d" % (
proxy.label, scenario, rep, res["gbit"],
res["rate"] if res["rate"] == res["rate"] else 0,
res["prx_cpu_s"], res["cli_util"] * 100,
res["prx_util"] * 100, res["srv_util"] * 100,
res["cli_thread"] * 100, res["srv_thread"] * 100,
res["bound"], res["errors"]), flush=True)
finally:
for p in origin:
stop(p)
cg_down()
net_down()
summary(rows)
print(f"\n{csvpath}\nlogs and configurations: {work}")
if __name__ == "__main__":
main()
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