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1 """ | 1 """ |
2 What's eating the battery life of my laptop? Why isn't it many more | 2 What's eating the battery life of my laptop? Why isn't it many more |
3 hours? Which software component causes the most power to be burned? | 3 hours? Which software component causes the most power to be burned? |
4 These are important questions without a good answer... until now. | 4 These are important questions without a good answer... until now. |
5 """ | 5 """ |
6 import time, os | 6 import time, os |
7 from autotest_lib.client.bin import utils, profiler | 7 from autotest_lib.client.bin import utils, profiler |
8 | 8 |
9 class powertop(profiler.profiler): | 9 class powertop(profiler.profiler): |
10 version = 1 | 10 version = 1 |
11 preserve_srcdir = True | 11 preserve_srcdir = True |
12 | 12 |
13 # filenames: list of filenames to cat | 13 # filenames: list of filenames to cat |
14 def setup(self, *args, **dargs): | 14 def setup(self, *args, **dargs): |
15 os.chdir(self.srcdir) | 15 os.chdir(self.srcdir) |
16 utils.system('make') | 16 utils.make() |
17 | 17 |
18 | 18 |
19 def start(self, test): | 19 def start(self, test): |
20 self.child_pid = os.fork() | 20 self.child_pid = os.fork() |
21 if self.child_pid: # parent | 21 if self.child_pid: # parent |
22 return None | 22 return None |
23 else: # child | 23 else: # child |
24 powertop = os.path.join(self.srcdir, 'powertop') + ' -d' | 24 powertop = os.path.join(self.srcdir, 'powertop') + ' -d' |
25 outputfile = os.path.join(test.profdir, 'powertop') | 25 outputfile = os.path.join(test.profdir, 'powertop') |
26 while True: | 26 while True: |
27 output = open(outputfile, 'a') | 27 output = open(outputfile, 'a') |
28 output.write(time.asctime() + '\n') | 28 output.write(time.asctime() + '\n') |
29 data = utils.system_output('%s >> %s' % (powertop, outputfile)) | 29 data = utils.system_output('%s >> %s' % (powertop, outputfile)) |
30 output.write(data) | 30 output.write(data) |
31 output.write('\n=========================\n') | 31 output.write('\n=========================\n') |
32 output.close() | 32 output.close() |
33 | 33 |
34 | 34 |
35 def stop(self, test): | 35 def stop(self, test): |
36 os.kill(self.child_pid, 15) | 36 os.kill(self.child_pid, 15) |
37 | 37 |
38 | 38 |
39 def report(self, test): | 39 def report(self, test): |
40 return None | 40 return None |
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