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author | Alexey Budankov <alexey.budankov@linux.intel.com> | 2019-03-18 20:41:02 +0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-05-15 16:36:49 -0300 |
commit | d3c8c08e75c4cbb6a940323092b40fcfd1de5380 (patch) | |
tree | 76900ec276eedfa1c32a9eb89acce9f55c4e6ee9 /tools/perf/util/session.h | |
parent | 5b6f5aef10f65863151fd4daed61657ad2681f98 (diff) |
perf session: Define 'bytes_transferred' and 'bytes_compressed' metrics
Define 'bytes_transferred' and 'bytes_compressed' metrics to calculate
ratio in the end of the data collection:
compression ratio = bytes_transferred / bytes_compressed
The 'bytes_transferred' metric accumulates the amount of bytes that was
extracted from the mmaped kernel buffers for compression, while
'bytes_compressed' accumulates the amount of bytes that was received
after applying compression.
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1d4bf499-cb03-26dc-6fc6-f14fec7622ce@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/session.h')
-rw-r--r-- | tools/perf/util/session.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index d96eccd7d27f..0e14884f28b2 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -35,6 +35,8 @@ struct perf_session { struct ordered_events ordered_events; struct perf_data *data; struct perf_tool *tool; + u64 bytes_transferred; + u64 bytes_compressed; }; struct perf_tool; |