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>
bool disabled = false, draining = false;
struct perf_evlist *sb_evlist = NULL;
int fd;
bool disabled = false, draining = false;
struct perf_evlist *sb_evlist = NULL;
int fd;
atexit(record__sig_exit);
signal(SIGCHLD, sig_handler);
atexit(record__sig_exit);
signal(SIGCHLD, sig_handler);
record__mmap_read_all(rec, true);
record__aio_mmap_read_sync(rec);
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;
if (forks) {
int exit_status;
- 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);
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");
struct cpu_topology_map *cpu;
struct cpu_cache_level *caches;
int caches_cnt;
struct cpu_topology_map *cpu;
struct cpu_cache_level *caches;
int caches_cnt;
struct numa_node *numa_nodes;
struct memory_node *memory_nodes;
unsigned long long memory_bsize;
struct numa_node *numa_nodes;
struct memory_node *memory_nodes;
unsigned long long memory_bsize;
struct ordered_events ordered_events;
struct perf_data *data;
struct perf_tool *tool;
struct ordered_events ordered_events;
struct perf_data *data;
struct perf_tool *tool;
+ u64 bytes_transferred;
+ u64 bytes_compressed;