23b: mask->FIR chain decoded — DESIGN body is vectorized LOG2 of band curve (poly fingerprinted), WIN_freq identified as periodic Hann(4096) falling half applied to FIR[n/2..n), full ILT stub->impl table resolved offline (ilt_resolve.py), live buffer catalog extended (SIMD lane masks at 0x540598, complex identity reset between callbacks, overlap buffer at 0x5406f8 non-zero), plugin output proven nondeterministic across renders (LCG dither) — spectral metrics only; ptrace lab scripts + lessons (TRACECLONE before CONT, sub-second host lifecycle under -renderproject)

2026-08-23 20:59:54 +03:00
parent 07cd4b7dc0
commit b8d5f83fc5
39 changed files with 190417 additions and 0 deletions
@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+"""hotips.py — sample thread RIPs aggressively during the render burst to find
+which module code actually executes (the real DSP path)."""
+import collections
+import glob
+import os
+import subprocess
+import sys
+import time
+
+MOD_LO, MOD_HI = 0x180001000, 0x181baa000
+
+
+def find_host():
+    for p in glob.glob('/proc/[0-9]*'):
+        pid = int(os.path.basename(p))
+        try:
+            cmd = open(f'/proc/{pid}/cmdline', 'rb').read().replace(b'\0', b' ').decode('utf8', 'replace')
+            maps = open(f'/proc/{pid}/maps').read()
+        except Exception:
+            continue
+        if 'soothe2' in maps and 'reaper' not in cmd:
+            return pid
+    return None
+
+
+def main():
+    subprocess.run("pkill -9 -x reaper; pkill -9 -f '[y]abridge'; sleep 1", shell=True)
+    proc = subprocess.Popen(['/usr/bin/reaper', '-nosplash', '-ignoreerrors',
+                             '-renderproject', '/home/m/soothe-bt/dual_b1q_0.5.rpp'],
+                            stdout=open('/dev/null', 'w'), stderr=subprocess.STDOUT)
+    host = None
+    t0 = time.time()
+    while time.time() - t0 < 30 and not host:
+        host = find_host()
+        time.sleep(0.002)
+    print('host', host, 'at %.3fs' % (time.time() - t0))
+    ips = collections.Counter()
+    t_end = time.time() + float(os.environ.get('HOT_DUR', '6'))
+    n_ok = n_fail = 0
+    while time.time() < t_end:
+        for tid_s in glob.glob(f'/proc/{host}/task/*'):
+            try:
+                parts = open(f'{tid_s}/syscall').read().split()
+                ip = int(parts[-1], 16)
+                n_ok += 1
+                if MOD_LO <= ip < MOD_HI:
+                    ips[ip] += 1
+            except Exception:
+                n_fail += 1
+    proc.kill()
+    print('samples ok=%d fail=%d, in-module=%d' % (n_ok, n_fail, sum(ips.values())))
+    # bucket to 64-byte lines, aggregate by function-ish regions
+    agg = collections.Counter()
+    for ip, c in ips.items():
+        agg[(ip >> 6) << 6] += c
+    for addr, c in agg.most_common(40):
+        print('%#x %d' % (addr, c))
+
+
+if __name__ == '__main__':
+    main()