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| author | Jin Qian <jinqian@google.com> | 2017-01-10 16:10:35 -0800 |
|---|---|---|
| committer | Jin Qian <jinqian@google.com> | 2017-03-14 13:07:19 -0700 |
| commit | bce3e4dd9d49f2a3da44841a6b0b6dcb56ec149d (patch) | |
| tree | 61aa43bf31e5df1eb286f61aef1ee9de615a953b /tools/perf/scripts/python | |
| parent | a2849d45025ca5894e99502752a86ebc744a4361 (diff) | |
ANDROID: uid_cputime: add per-uid IO usage accounting
IO usages are accounted in foreground and background buckets.
For each uid, io usage is calculated in two steps.
delta = current total of all uid tasks - previus total
current bucket += delta
Bucket is determined by current uid stat. Userspace writes to
/proc/uid_procstat/set <uid> <stat> when uid stat is updated.
/proc/uid_io/stats shows IO usage in this format.
<uid> <foreground IO> <background IO>
Signed-off-by: Jin Qian <jinqian@google.com>
Bug: 34198239
Change-Id: Ib8bebda53e7a56f45ea3eb0ec9a3153d44188102
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions