total_mem_actual.py revision a8af9a7a2462b00e72deff99327bdb452a715277 
1#! /usr/bin/python
2"""Parses the actual memory usage from TCMalloc.
3
4This goes through logs that have the actual allocated memory (not sampled) in
5the logs. The output is of the form of:
6
7time (in seconds from some base time), amount of memory allocated by the
8application
9
10"""
11
12import argparse
13from cros_utils import compute_total_diff
14from datetime import datetime
15
16pretty_print = True
17
18parser = argparse.ArgumentParser()
19parser.add_argument('filename')
20args = parser.parse_args()
21
22my_file = open(args.filename)
23output_file = open('raw_memory_data.csv', 'a')
24
25base_time = datetime(2014, 6, 11, 0, 0)
26prev_line = ''
27half_entry = (None, None)
28
29for line in my_file:
30  if 'Output Heap Stats:' in line:
31    total_diff = compute_total_diff(line, base_time)
32    half_entry = (total_diff, None)
33  if 'Bytes in use by application' in line:
34    total_diff = half_entry[0]
35    memory_used = int(line.strip().split()[1])
36    half_entry = (None, None)
37    output_file.write('{0},{1}\n'.format(total_diff, memory_used))
38