Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 73 insertions, 0 deletions

diff --git a/src/rocksdb/tools/write_stress_runner.py b/src/rocksdb/tools/write_stress_runner.py
new file mode 100644
index 00000000..b84dfd3c
--- /dev/null
+++ b/src/rocksdb/tools/write_stress_runner.py
@@ -0,0 +1,73 @@
+#! /usr/bin/env python
+import subprocess
+import argparse
+import random
+import time
+import sys
+
+
+def generate_runtimes(total_runtime):
+    # combination of short runtimes and long runtimes, with heavier
+    # weight on short runtimes
+    possible_runtimes_sec = range(1, 10) + range(1, 20) + [100, 1000]
+    runtimes = []
+    while total_runtime > 0:
+        chosen = random.choice(possible_runtimes_sec)
+        chosen = min(chosen, total_runtime)
+        runtimes.append(chosen)
+        total_runtime -= chosen
+    return runtimes
+
+
+def main(args):
+    runtimes = generate_runtimes(int(args.runtime_sec))
+    print "Going to execute write stress for " + str(runtimes)  # noqa: E999 T25377293 Grandfathered in
+    first_time = True
+
+    for runtime in runtimes:
+        kill = random.choice([False, True])
+
+        cmd = './write_stress --runtime_sec=' + \
+            ("-1" if kill else str(runtime))
+
+        if len(args.db) > 0:
+            cmd = cmd + ' --db=' + args.db
+
+        if first_time:
+            first_time = False
+        else:
+            # use current db
+            cmd = cmd + ' --destroy_db=false'
+        if random.choice([False, True]):
+            cmd = cmd + ' --delete_obsolete_files_with_fullscan=true'
+        if random.choice([False, True]):
+            cmd = cmd + ' --low_open_files_mode=true'
+
+        print("Running write_stress for %d seconds (%s): %s" %
+              (runtime, ("kill-mode" if kill else "clean-shutdown-mode"),
+              cmd))
+
+        child = subprocess.Popen([cmd], shell=True)
+        killtime = time.time() + runtime
+        while not kill or time.time() < killtime:
+            time.sleep(1)
+            if child.poll() is not None:
+                if child.returncode == 0:
+                    break
+                else:
+                    print("ERROR: write_stress died with exitcode=%d\n"
+                          % child.returncode)
+                    sys.exit(1)
+        if kill:
+            child.kill()
+        # breathe
+        time.sleep(3)
+
+if __name__ == '__main__':
+    random.seed(time.time())
+    parser = argparse.ArgumentParser(description="This script runs and kills \
+        write_stress multiple times")
+    parser.add_argument("--runtime_sec", default='1000')
+    parser.add_argument("--db", default='')
+    args = parser.parse_args()
+    main(args)