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1 import os | 1 import os |
2 from autotest_lib.client.bin import test, utils | 2 from autotest_lib.client.bin import test, utils |
3 | 3 |
4 | 4 |
5 class hackbench(test.test): | 5 class hackbench(test.test): |
6 """ | 6 """ |
7 This module will run the hackbench benchmark. Hackbench is a benchmark for | 7 This module will run the hackbench benchmark. Hackbench is a benchmark for |
8 measuring the performance, overhead and scalability of the Linux scheduler. | 8 measuring the performance, overhead and scalability of the Linux scheduler. |
9 The C program was pick from Ingo Molnar's page. | 9 The C program was pick from Ingo Molnar's page. |
10 | 10 |
11 @author: Nikhil Rao (ncrao@google.com) | 11 @author: Nikhil Rao (ncrao@google.com) |
12 @see: http://people.redhat.com/~mingo/cfs-scheduler/tools/hackbench.c | 12 @see: http://people.redhat.com/~mingo/cfs-scheduler/tools/hackbench.c |
13 """ | 13 """ |
14 version = 1 | 14 version = 1 |
15 preserve_srcdir = True | 15 preserve_srcdir = True |
16 | 16 |
17 | 17 |
18 def setup(self): | 18 def setup(self): |
19 os.chdir(self.srcdir) | 19 os.chdir(self.srcdir) |
20 if 'CC' in os.environ: | 20 if 'CC' in os.environ: |
21 cc = '$CC' | 21 cc = '$CC' |
22 else: | 22 else: |
23 cc = 'cc' | 23 cc = 'cc' |
24 utils.system('%s -lpthread hackbench.c -o hackbench' % cc) | 24 utils.system('%s -lpthread hackbench.c -o hackbench' % cc) |
25 | 25 |
26 | 26 |
27 def initialize(self): | 27 def initialize(self): |
28 self.job.require_gcc() | 28 self.job.require_gcc() |
29 self.results = None | 29 self.results = None |
30 | 30 |
31 | 31 |
32 def run_once(self, num_groups=90): | 32 def run_once(self, num_groups=90): |
33 """ | 33 """ |
(...skipping 13 matching lines...) Expand all Loading... |
47 | 47 |
48 def postprocess_iteration(self): | 48 def postprocess_iteration(self): |
49 """ | 49 """ |
50 Pick up the results attribute and write it in the performance keyval. | 50 Pick up the results attribute and write it in the performance keyval. |
51 """ | 51 """ |
52 lines = self.results.split('\n') | 52 lines = self.results.split('\n') |
53 for line in lines: | 53 for line in lines: |
54 if line.startswith('Time:'): | 54 if line.startswith('Time:'): |
55 time_val = line.split()[1] | 55 time_val = line.split()[1] |
56 self.write_perf_keyval({'time': time_val}) | 56 self.write_perf_keyval({'time': time_val}) |
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