1 files changed, 45 insertions, 0 deletions
diff --git a/research/experiments/009-runtime-drafts/run.py b/research/experiments/009-runtime-drafts/run.py
new file mode 100755
index 0000000..08ed55d
--- /dev/null
+++ b/research/experiments/009-runtime-drafts/run.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+"""Run bench.c in copy and draft modes on a real device, alternating order."""
+import argparse
+import json
+import platform
+import shutil
+import subprocess
+from pathlib import Path
+
+HERE = Path(__file__).resolve().parent
+CONNECTIONS = HERE.parents[2] / 'prototypes' / 'connections'
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--work', type=Path, default=CONNECTIONS / 'build' / 'bench-drafts')
+    parser.add_argument('--size', type=int, default=1048576)
+    parser.add_argument('--saves', type=int, default=24)
+    parser.add_argument('--rounds', type=int, default=3)
+    parser.add_argument('--output', type=Path)
+    args = parser.parse_args()
+    shutil.rmtree(args.work, ignore_errors=True)
+    args.work.mkdir(parents=True)
+    device = subprocess.check_output(['findmnt', '-n', '-T', str(args.work), '-o', 'SOURCE,FSTYPE'], text=True).split()
+    assert device[1] != 'tmpfs', 'fsync is free on tmpfs'
+    binary = args.work / 'bench'
+    subprocess.run(['cc', '-std=c17', '-O2', '-Wall', '-Wextra', '-Werror', f'-I{CONNECTIONS}',
+                    str(HERE / 'bench.c'), str(CONNECTIONS / 'store-tree.c'), '-o', str(binary)], check=True)
+    runs = []
+    for round_number in range(args.rounds):
+        for mode in (('copy', 'draft') if round_number % 2 == 0 else ('draft', 'copy')):
+            directory = args.work / f'{mode}-{round_number}'
+            subprocess.run([str(binary), 'create', str(directory), str(args.size), '0'], check=True)
+            line = subprocess.check_output([str(binary), mode, str(directory), str(args.size), str(args.saves)], text=True)
+            runs.append(json.loads(line))
+            print(line.strip(), flush=True)
+            shutil.rmtree(directory)
+    report = {'device': device[0], 'filesystem': device[1], 'machine': platform.machine(),
+              'kernel': platform.release(), 'store': 'store-tree.c', 'runs': runs}
+    if args.output:
+        args.output.write_text(json.dumps(report, indent=2) + '\n')
+
+
+if __name__ == '__main__':
+    main()