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| author | Alexey Budankov <alexey.budankov@linux.intel.com> | 2019-03-18 18:41:02 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-05-15 21:36:49 +0200 |
| commit | d3c8c08e75c4cbb6a940323092b40fcfd1de5380 (patch) | |
| tree | 76900ec276eedfa1c32a9eb89acce9f55c4e6ee9 /tools | |
| parent | perf build tests: Add NO_LIBZSTD=1 to make_minimal (diff) | |
| download | linux-d3c8c08e75c4cbb6a940323092b40fcfd1de5380.tar.xz linux-d3c8c08e75c4cbb6a940323092b40fcfd1de5380.zip | |
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')
| -rw-r--r-- | tools/perf/builtin-record.c | 14 | ||||
| -rw-r--r-- | tools/perf/util/env.h | 1 | ||||
| -rw-r--r-- | tools/perf/util/session.h | 2 |
3 files changed, 16 insertions, 1 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index d2b5a22b7249..386e665a166f 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1186,6 +1186,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) bool disabled = false, draining = false; struct perf_evlist *sb_evlist = NULL; int fd; + float ratio = 0; atexit(record__sig_exit); signal(SIGCHLD, sig_handler); @@ -1491,6 +1492,11 @@ out_child: record__mmap_read_all(rec, true); record__aio_mmap_read_sync(rec); + if (rec->session->bytes_transferred && rec->session->bytes_compressed) { + ratio = (float)rec->session->bytes_transferred/(float)rec->session->bytes_compressed; + session->header.env.comp_ratio = ratio + 0.5; + } + if (forks) { int exit_status; @@ -1537,9 +1543,15 @@ out_child: else samples[0] = '\0'; - fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s%s ]\n", + fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s%s", perf_data__size(data) / 1024.0 / 1024.0, data->path, postfix, samples); + if (ratio) { + fprintf(stderr, ", compressed (original %.3f MB, ratio is %.3f)", + rec->session->bytes_transferred / 1024.0 / 1024.0, + ratio); + } + fprintf(stderr, " ]\n"); } out_delete_session: diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h index 4f8e2b485c01..34868ca7efd1 100644 --- a/tools/perf/util/env.h +++ b/tools/perf/util/env.h @@ -62,6 +62,7 @@ struct perf_env { struct cpu_topology_map *cpu; struct cpu_cache_level *caches; int caches_cnt; + u32 comp_ratio; struct numa_node *numa_nodes; struct memory_node *memory_nodes; unsigned long long memory_bsize; 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; |