mikeyk · December 2, 2011 19:38 · Dec 2, 2011
diff --git a/parse_vmtouch.py b/parse_vmtouch.py
@@ -0,0 +1,37 @@
+#! /usr/bin/env python
+import fileinput
+import argparse
+from operator import itemgetter
+
+parser = argparse.ArgumentParser()
+parser.add_argument('--target-mb', action = 'store', dest = 'target_mb', default = 61000, type = int)
+parser.add_argument('vmtouch_output_file', action = 'store', nargs = '+')
+args = parser.parse_args()
+
+entries = []
+last_fl_name = None
+for line in open(args.vmtouch_output_file[0]):
+    line = line.strip()
+    if line.startswith('['):
+        # this is a mem info row
+        if not last_fl_name:
+            continue
+        currently_paged_percent = line.rsplit(' ', 1)[-1]
+        num, denom = map(float, currently_paged_percent.split('/'))
+        if num and denom:
+            bytes = denom * 4096
+            mb = bytes / (1024 * 1024)
+            entries.append((last_fl_name, num / denom, mb))
+    elif line.startswith('.') or line.startswith('/'):
+        last_fl_name = line
+
+sorted_entries = sorted(entries, key = itemgetter(1), reverse = True)
+loaded_mb = 0
+
+to_page_in = []
+for entry in sorted_entries:
+    if loaded_mb <= args.target_mb:
+        loaded_mb += entry[-1]
+        to_page_in.append(entry[0])
+
+print 'vmtouch -m 5G -vt', ' '.join(to_page_in)