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Diffstat (limited to 'meta/lib/oeqa/buildperf/base.py')
-rw-r--r-- | meta/lib/oeqa/buildperf/base.py | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/meta/lib/oeqa/buildperf/base.py b/meta/lib/oeqa/buildperf/base.py new file mode 100644 index 0000000000..3cbdfa7818 --- /dev/null +++ b/meta/lib/oeqa/buildperf/base.py | |||
@@ -0,0 +1,46 @@ | |||
1 | # Copyright (c) 2016, Intel Corporation. | ||
2 | # | ||
3 | # This program is free software; you can redistribute it and/or modify it | ||
4 | # under the terms and conditions of the GNU General Public License, | ||
5 | # version 2, as published by the Free Software Foundation. | ||
6 | # | ||
7 | # This program is distributed in the hope it will be useful, but WITHOUT | ||
8 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
9 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
10 | # more details. | ||
11 | # | ||
12 | """Build performance test base classes and functionality""" | ||
13 | from oeqa.utils.commands import runCmd | ||
14 | |||
15 | |||
16 | class KernelDropCaches(object): | ||
17 | """Container of the functions for dropping kernel caches""" | ||
18 | sudo_passwd = None | ||
19 | |||
20 | @classmethod | ||
21 | def check(cls): | ||
22 | """Check permssions for dropping kernel caches""" | ||
23 | from getpass import getpass | ||
24 | from locale import getdefaultlocale | ||
25 | cmd = ['sudo', '-k', '-n', 'tee', '/proc/sys/vm/drop_caches'] | ||
26 | ret = runCmd(cmd, ignore_status=True, data=b'0') | ||
27 | if ret.output.startswith('sudo:'): | ||
28 | pass_str = getpass( | ||
29 | "\nThe script requires sudo access to drop caches between " | ||
30 | "builds (echo 3 > /proc/sys/vm/drop_caches).\n" | ||
31 | "Please enter your sudo password: ") | ||
32 | cls.sudo_passwd = bytes(pass_str, getdefaultlocale()[1]) | ||
33 | |||
34 | @classmethod | ||
35 | def drop(cls): | ||
36 | """Drop kernel caches""" | ||
37 | cmd = ['sudo', '-k'] | ||
38 | if cls.sudo_passwd: | ||
39 | cmd.append('-S') | ||
40 | input_data = cls.sudo_passwd + b'\n' | ||
41 | else: | ||
42 | cmd.append('-n') | ||
43 | input_data = b'' | ||
44 | cmd += ['tee', '/proc/sys/vm/drop_caches'] | ||
45 | input_data += b'3' | ||
46 | runCmd(cmd, data=input_data) | ||