xavierk
3776c4de6e
The injector never offers the RemoteDesktop portal on niri, but inject-probe ran the portal probe unguarded and reported portal_available: true there. The probe now reuses the injector's _is_niri_session guard: on niri it skips the portal and reports portal_skip_reason "niri" with portal_available false. Off niri the probe runs and reports its answer as before. Fixes #46
570 lines
20 KiB
Python
570 lines
20 KiB
Python
"""Locked performance-baseline protocol for the Voculinux port (ticket #19).
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Runs the fixed three-metric protocol against an installed build on the
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target machine class (Void, niri, RTX 2050 4 GB) and writes a JSON +
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Markdown evidence report. Every number in the report is observed on the
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machine the script runs on; nothing is estimated. Helpers that parse
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observed bytes (``/proc`` status, ``nvidia-smi`` CSV, ``--debug`` logs)
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are pure and covered by tests/test_perf_baseline_protocol.py.
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"""
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from __future__ import annotations
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import argparse
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import json
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import logging
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import math
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import os
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import platform
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import re
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import statistics
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import subprocess
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import sys
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import time
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from pathlib import Path
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from typing import Any, Optional
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logger = logging.getLogger(__name__)
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PROTOCOL_VERSION = "1.0.0"
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_VMRSS_RE = re.compile(r"^VmRSS:\s+(\d+)\s+kB", re.MULTILINE)
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def parse_vmrss_kb(status_text: str) -> Optional[int]:
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"""Return the VmRSS value in kilobytes from /proc/<pid>/status text."""
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match = _VMRSS_RE.search(status_text)
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if match is None:
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return None
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return int(match.group(1))
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def read_rss_kb(pid: int) -> Optional[int]:
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"""Return the resident set size of ``pid`` in kilobytes, if readable."""
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try:
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text = Path(f"/proc/{pid}/status").read_text(encoding="utf-8")
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except OSError:
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return None
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return parse_vmrss_kb(text)
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def describe(values: list[float]) -> dict[str, Any]:
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"""Summarise repeated runs; empty input stays explicitly empty."""
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if not values:
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return {"n": 0, "mean": None, "min": None, "max": None, "stdev": None}
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summary: dict[str, Any] = {
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"n": len(values),
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"mean": statistics.fmean(values),
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"min": min(values),
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"max": max(values),
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"stdev": statistics.stdev(values) if len(values) > 1 else 0.0,
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}
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return summary
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_LOG_TS_RE = re.compile(r"^(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2},\d{3})")
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_TOGGLE_RE = re.compile(r"Handling action: (toggle|start)\b|Toggle requested in state IDLE")
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_STOP_TOGGLE_RE = re.compile(r"Toggle requested in state (?!IDLE)(\w+)")
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_CAPTURE_RE = re.compile(r"Opened capture stream:")
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def _parse_log_ts(line: str) -> Optional[float]:
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"""Parse a ``%(asctime)s`` timestamp prefix to epoch seconds."""
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match = _LOG_TS_RE.match(line)
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if match is None:
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return None
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try:
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parsed = time.strptime(match.group(1), "%Y-%m-%d %H:%M:%S,%f")
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except ValueError:
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return None
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return time.mktime(parsed) + int(match.group(1).split(",")[1]) / 1000.0
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def parse_wake_latencies(log_text: str) -> list[float]:
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"""Pair each toggle/start action with the next capture-stream opening.
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Returns wake latencies in seconds. A toggle with no later capture
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start (blocked start, shutdown) is dropped rather than zero-filled.
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"""
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latencies: list[float] = []
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pending: Optional[float] = None
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for line in log_text.splitlines():
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stamp = _parse_log_ts(line)
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if stamp is None:
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continue
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if _TOGGLE_RE.search(line):
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pending = stamp
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elif _STOP_TOGGLE_RE.search(line):
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pending = None
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elif _CAPTURE_RE.search(line) and pending is not None:
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latencies.append(stamp - pending)
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pending = None
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return latencies
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_SMI_MEM_RE = re.compile(r"^(.+?),\s*([\d.]+),\s*(\d+)\s*MiB,\s*(\d+)\s*MiB\s*$", re.MULTILINE)
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def parse_nvidia_smi_memory(csv_text: str) -> Optional[tuple[int, int]]:
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"""Parse ``(total_mib, free_mib)`` of the first GPU from nvidia-smi CSV.
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Expected query shape: ``name,driver_version,memory.total,memory.free``.
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Returns None when no GPU row is present (CPU-only hosts).
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"""
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for line in csv_text.splitlines():
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match = _SMI_MEM_RE.match(line.strip())
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if match is not None:
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return (int(match.group(3)), int(match.group(4)))
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return None
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def vram_mib() -> Optional[tuple[int, int]]:
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"""Return ``(total_mib, free_mib)`` of the first NVIDIA GPU, if any."""
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# Lazy: the parse-only subcommands must run without the package installed.
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from vocalinux.utils.host_process import host_env
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try:
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proc = subprocess.run(
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[
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"nvidia-smi",
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"--query-gpu=name,driver_version,memory.total,memory.free",
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"--format=csv,noheader",
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],
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capture_output=True,
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text=True,
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timeout=30,
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env=host_env(),
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)
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except (OSError, subprocess.SubprocessError) as error:
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logger.debug("nvidia-smi unavailable: %s", error)
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return None
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if proc.returncode != 0:
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return None
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return parse_nvidia_smi_memory(proc.stdout)
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def recommend_thresholds(
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footprints_mib: dict[str, float], headroom_mib: float = 512.0
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) -> dict[str, float]:
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"""Derive ladder free-memory cutoffs from measured load footprints.
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Each rung is recommended only when free memory covers its measured
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footprint plus ``headroom_mib`` for the desktop and other GPU clients.
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Keys name the ladder of ticket #20: q8_0 default, q5_0 fallback,
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small floor.
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"""
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q8 = footprints_mib["q8_0"] + headroom_mib
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q5 = footprints_mib["q5_0"] + headroom_mib
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return {
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"prefer_q8_0_above_mib": q8,
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"prefer_q5_0_above_mib": q5,
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"floor_small_below_mib": q5,
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"headroom_mib": headroom_mib,
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}
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SAMPLE_RATE_HZ = 16000
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SAMPLE_SECONDS = 30.0
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def make_sample_wav(path: Path, seed: int = 19) -> Path:
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"""Write the fixed 30 s speech-like sample every RTF run transcribes.
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Deterministic syllable babble (seeded): voiced harmonic bursts with a
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pitch contour and pauses, 16 kHz mono 16-bit. Same seed means
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byte-identical output, so runs stay comparable across machines and
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backends. Speech-like, not speech: RTF comparability is the goal,
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not a transcription accuracy figure.
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"""
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import random
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import wave
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rng = random.Random(seed)
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total = int(SAMPLE_RATE_HZ * SAMPLE_SECONDS)
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samples = [0.0] * total
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pos = 0
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while pos < total:
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if rng.random() < 0.25:
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pos += int(SAMPLE_RATE_HZ * rng.uniform(0.05, 0.25))
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continue
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dur = int(SAMPLE_RATE_HZ * rng.uniform(0.12, 0.35))
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f0 = rng.uniform(90.0, 220.0)
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glide = rng.uniform(0.9, 1.1)
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formants = [rng.uniform(300, 800), rng.uniform(900, 2200), rng.uniform(2200, 3200)]
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end = min(total, pos + dur)
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n = end - pos
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for i in range(n):
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t = i / SAMPLE_RATE_HZ
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frac = i / max(n, 1)
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env = math.sin(math.pi * frac) ** 2
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pitch = f0 * (1.0 + (glide - 1.0) * frac)
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value = 0.0
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for harmonic, weight in ((1, 0.6), (2, 0.25), (3, 0.15)):
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value += weight * math.sin(2.0 * math.pi * pitch * harmonic * t)
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for formant in formants:
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value += 0.2 * math.sin(2.0 * math.pi * formant * t)
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samples[pos + i] = env * value * 0.5
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pos = end
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peak = max(1e-9, max(abs(s) for s in samples))
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path = Path(path)
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with wave.open(str(path), "wb") as handle:
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handle.setnchannels(1)
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handle.setsampwidth(2)
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handle.setframerate(SAMPLE_RATE_HZ)
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handle.writeframes(
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b"".join(int(s / peak * 32767).to_bytes(2, "little", signed=True) for s in samples)
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)
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return path
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def collect_host_facts() -> dict[str, Any]:
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"""Record the host facts the ticket requires next to every number."""
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facts: dict[str, Any] = {
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"os": platform.freedesktop_os_release().get("PRETTY_NAME", platform.system()),
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"python": platform.python_version(),
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"cpu_count": os.cpu_count(),
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"session_type": os.environ.get("XDG_SESSION_TYPE"),
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"desktop": os.environ.get("XDG_CURRENT_DESKTOP"),
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}
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try:
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facts["app_version"] = subprocess.run(
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[sys.executable, "-m", "vocalinux.main", "--version"],
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capture_output=True,
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text=True,
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timeout=60,
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).stdout.strip()
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except (OSError, subprocess.SubprocessError):
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facts["app_version"] = None
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vram = vram_mib()
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facts["gpu_total_mib"], facts["gpu_free_mib"] = vram if vram else (None, None)
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return facts
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def render_markdown_report(host_facts: dict[str, Any], metrics: dict[str, Any]) -> str:
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"""Render the evidence report; numbers come only from ``metrics``."""
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lines = [
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"# Installed-build performance baseline",
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"",
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f"Protocol version: {PROTOCOL_VERSION}",
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"",
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"## Host facts",
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"",
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*[f"- {key}: {value}" for key, value in host_facts.items()],
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"",
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"## Metrics",
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"",
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"```json",
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json.dumps(metrics, indent=2, sort_keys=True),
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"```",
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"",
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]
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return "\n".join(lines)
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def realtime_factor(audio_seconds: float, transcribe_seconds: float) -> float:
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"""Transcription real-time factor: wall time per audio second."""
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if audio_seconds <= 0:
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raise ValueError("audio duration must be positive")
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return transcribe_seconds / audio_seconds
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def _child_load_model(model_path: str, use_gpu: bool) -> dict[str, Any]:
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"""Load one whisper.cpp model in-process; prints RSS for the parent."""
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from pywhispercpp.model import Model
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params: dict[str, Any] = {}
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if not use_gpu:
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params["context_params"] = {"use_gpu": False}
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started = time.monotonic()
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model = Model(model_path, **params)
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load_seconds = time.monotonic() - started
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rss = read_rss_kb(os.getpid())
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del model
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return {"load_seconds": load_seconds, "rss_kb": rss}
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def _child_transcribe(model_path: str, use_gpu: bool, wav_path: str) -> dict[str, Any]:
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"""Load a model and transcribe ``wav_path`` once; report wall time."""
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import wave
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from pywhispercpp.model import Model
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with wave.open(wav_path, "rb") as handle:
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frames = handle.getnframes()
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rate = handle.getframerate()
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audio_seconds = frames / rate
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params: dict[str, Any] = {}
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if not use_gpu:
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params["context_params"] = {"use_gpu": False}
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load_started = time.monotonic()
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model = Model(model_path, **params)
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load_seconds = time.monotonic() - load_started
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transcribe_started = time.monotonic()
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segments = model.transcribe(wav_path)
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text = "".join(getattr(seg, "text", "") for seg in segments)
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transcribe_seconds = time.monotonic() - transcribe_started
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return {
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"audio_seconds": audio_seconds,
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"load_seconds": load_seconds,
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"transcribe_seconds": transcribe_seconds,
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"rtf": realtime_factor(audio_seconds, transcribe_seconds),
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"chars": len(text),
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}
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def _sample_vram_while_child(child: "subprocess.Popen[str]", hold_seconds: float) -> Optional[int]:
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"""Peak VRAM-used reading while the child holds the loaded model."""
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deadline = time.monotonic() + hold_seconds
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peak: Optional[int] = None
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while time.monotonic() < deadline and child.poll() is None:
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reading = vram_mib()
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if reading is not None:
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used = reading[0] - reading[1]
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peak = used if peak is None else max(peak, used)
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time.sleep(0.5)
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return peak
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def cmd_probe_load(args: argparse.Namespace) -> int:
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"""Measure one rung's load footprint: RSS, VRAM used, wall time."""
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use_gpu = args.backend == "vulkan"
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before = vram_mib()
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child = subprocess.Popen(
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[
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sys.executable,
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str(Path(__file__).resolve()),
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"_child-load",
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"--model-file",
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args.model_file,
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"--backend",
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args.backend,
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"--hold-seconds",
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str(args.hold_seconds),
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],
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stdout=subprocess.PIPE,
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text=True,
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)
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peak_used: Optional[int] = None
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try:
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peak_used = _sample_vram_while_child(child, args.hold_seconds + 10.0)
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out = child.communicate(timeout=600)[0]
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except subprocess.TimeoutExpired:
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child.kill()
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raise
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try:
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child_report = json.loads(out.strip().splitlines()[-1])
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except (json.JSONDecodeError, IndexError):
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print(f"child produced no report: {out[-500:]}", file=sys.stderr)
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return 1
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after = vram_mib()
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report = {
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"model_file": args.model_file,
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"backend": args.backend,
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"load_seconds": child_report["load_seconds"],
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"rss_kb": child_report["rss_kb"],
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"vram_used_before_mib": (before[0] - before[1]) if before else None,
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"vram_free_before_mib": before[1] if before else None,
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"vram_peak_used_mib": peak_used,
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"vram_free_after_mib": after[1] if after else None,
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}
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print(json.dumps(report, indent=2, sort_keys=True))
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return 0
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def cmd_transcribe(args: argparse.Namespace) -> int:
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"""Transcribe the fixed sample ``--runs`` times in fresh processes."""
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runs = []
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for _ in range(args.runs):
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child = subprocess.Popen(
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[
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sys.executable,
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str(Path(__file__).resolve()),
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"_child-transcribe",
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"--model-file",
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args.model_file,
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"--backend",
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args.backend,
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"--wav",
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args.wav,
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],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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text=True,
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)
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try:
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peak_used = _sample_vram_while_child(child, float(args.timeout))
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out, err = child.communicate(timeout=60)
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except subprocess.TimeoutExpired:
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child.kill()
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raise
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if child.returncode != 0:
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print(err[-2000:], file=sys.stderr)
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return 1
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run = json.loads(out.strip().splitlines()[-1])
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run["vram_peak_used_mib"] = peak_used
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runs.append(run)
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rtfs = [run["rtf"] for run in runs]
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print(json.dumps({"runs": runs, "rtf_stats": describe(rtfs)}, indent=2, sort_keys=True))
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return 0
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def cmd_sample_rss(args: argparse.Namespace) -> int:
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"""Sample a running tray process RSS ``--samples`` times."""
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samples = []
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for _ in range(args.samples):
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rss = read_rss_kb(args.pid)
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if rss is not None:
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samples.append(float(rss))
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time.sleep(args.interval)
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print(json.dumps({"rss_kb_stats": describe(samples)}, indent=2, sort_keys=True))
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return 0
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def cmd_parse_log(args: argparse.Namespace) -> int:
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"""Parse wake latencies from a ``--debug`` log file."""
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log_text = Path(args.log).read_text(encoding="utf-8", errors="replace")
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latencies = parse_wake_latencies(log_text)
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print(json.dumps({"latencies": latencies, "stats": describe(latencies)}, indent=2))
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return 0
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def cmd_inject_probe(args: argparse.Namespace) -> int:
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"""Time the portal probe and the direct path's app-side dispatch cost.
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Never emits keystrokes: end-to-end key-to-screen latency would type
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into the live desktop, so it stays a hardware-checklist item (#32).
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On niri the portal is skipped with the injector's own niri guard: the
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injector never offers the portal there, so the report must not claim it.
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"""
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from vocalinux.text_injection.text_injector import TextInjector, _is_niri_session
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probe_text = "the quick brown fox jumps over the lazy dog 0123456789"
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started = time.monotonic()
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injector = TextInjector()
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wayland = bool(os.environ.get("WAYLAND_DISPLAY")) or getattr(injector, "wayland_mode", False)
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if wayland:
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backend = getattr(injector, "wayland_tool", None) or "wtype"
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else:
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backend = "x11"
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selected_seconds = time.monotonic() - started
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wtype_roundtrips: list[float] = []
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if wayland:
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import shutil
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from vocalinux.utils.host_process import host_env
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if shutil.which("wtype") is not None and backend != "x11":
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for _ in range(5):
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begin = time.monotonic()
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subprocess.run(
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["wtype", ""],
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capture_output=True,
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text=True,
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timeout=10,
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env=host_env(),
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)
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wtype_roundtrips.append(time.monotonic() - begin)
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portal_available = False
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portal_seconds = None
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portal_skip_reason = "niri" if _is_niri_session() else None
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if portal_skip_reason is None:
|
|
try:
|
|
from vocalinux.text_injection.remote_desktop_portal import RemoteDesktopPortal
|
|
|
|
portal_started = time.monotonic()
|
|
portal_available = RemoteDesktopPortal().probe()
|
|
portal_seconds = time.monotonic() - portal_started
|
|
except Exception as exc: # noqa: BLE001 - probe must never fail the pass
|
|
portal_available = False
|
|
portal_seconds = None
|
|
print(f"portal probe raised: {exc}", file=sys.stderr)
|
|
print(
|
|
json.dumps(
|
|
{
|
|
"first_rung": backend,
|
|
"direct_select_seconds": selected_seconds,
|
|
"direct_probe_chars": len(probe_text),
|
|
"wtype_empty_roundtrip_stats": describe(wtype_roundtrips),
|
|
"portal_available": portal_available,
|
|
"portal_probe_seconds": portal_seconds,
|
|
"portal_skip_reason": portal_skip_reason,
|
|
},
|
|
indent=2,
|
|
sort_keys=True,
|
|
)
|
|
)
|
|
return 0
|
|
|
|
|
|
def main(argv: Optional[list[str]] = None) -> int:
|
|
"""Entry point for the locked baseline protocol."""
|
|
parser = argparse.ArgumentParser(description=__doc__)
|
|
parser.add_argument("--version", action="store_true", help="print protocol version")
|
|
sub = parser.add_subparsers(dest="command")
|
|
|
|
probe = sub.add_parser("probe-load", help="measure one rung load footprint")
|
|
probe.add_argument("--model-file", required=True)
|
|
probe.add_argument("--backend", choices=("vulkan", "cpu"), required=True)
|
|
probe.add_argument("--hold-seconds", type=float, default=8.0)
|
|
probe.set_defaults(func=cmd_probe_load)
|
|
|
|
trans = sub.add_parser("transcribe", help="transcribe the fixed sample")
|
|
trans.add_argument("--model-file", required=True)
|
|
trans.add_argument("--backend", choices=("vulkan", "cpu"), required=True)
|
|
trans.add_argument("--wav", required=True)
|
|
trans.add_argument("--runs", type=int, default=3)
|
|
trans.add_argument("--timeout", type=int, default=1800)
|
|
trans.set_defaults(func=cmd_transcribe)
|
|
|
|
sample = sub.add_parser("sample-rss", help="sample a tray process RSS")
|
|
sample.add_argument("--pid", type=int, required=True)
|
|
sample.add_argument("--samples", type=int, default=5)
|
|
sample.add_argument("--interval", type=float, default=2.0)
|
|
sample.set_defaults(func=cmd_sample_rss)
|
|
|
|
parse = sub.add_parser("parse-log", help="wake latencies from a debug log")
|
|
parse.add_argument("--log", required=True)
|
|
parse.set_defaults(func=cmd_parse_log)
|
|
|
|
inject = sub.add_parser("inject-probe", help="portal probe, direct dispatch cost")
|
|
inject.set_defaults(func=cmd_inject_probe)
|
|
|
|
gen = sub.add_parser("make-sample", help="regenerate the fixed sample")
|
|
gen.add_argument("--out", required=True)
|
|
gen.add_argument("--seed", type=int, default=19)
|
|
|
|
child_load = sub.add_parser("_child-load")
|
|
child_load.add_argument("--model-file", required=True)
|
|
child_load.add_argument("--backend", choices=("vulkan", "cpu"), required=True)
|
|
child_load.add_argument("--hold-seconds", type=float, default=8.0)
|
|
|
|
child_trans = sub.add_parser("_child-transcribe")
|
|
child_trans.add_argument("--model-file", required=True)
|
|
child_trans.add_argument("--backend", choices=("vulkan", "cpu"), required=True)
|
|
child_trans.add_argument("--wav", required=True)
|
|
|
|
args = parser.parse_args(argv)
|
|
if args.version:
|
|
print(PROTOCOL_VERSION)
|
|
return 0
|
|
if args.command == "_child-load":
|
|
print(json.dumps(_child_load_model(args.model_file, args.backend == "vulkan")))
|
|
time.sleep(args.hold_seconds)
|
|
return 0
|
|
if args.command == "_child-transcribe":
|
|
print(json.dumps(_child_transcribe(args.model_file, args.backend == "vulkan", args.wav)))
|
|
return 0
|
|
if args.command == "make-sample":
|
|
make_sample_wav(Path(args.out), seed=args.seed)
|
|
print(str(args.out))
|
|
return 0
|
|
if hasattr(args, "func"):
|
|
return int(args.func(args))
|
|
parser.print_help()
|
|
return 0
|
|
|
|
|
|
if __name__ == "__main__":
|
|
raise SystemExit(main())
|