Messages in this thread | | | From | kan.liang@intel ... | Subject | [PATCH V8 0/7] Freq/CPU%/CORE_BUSY% support | Date | Thu, 3 Sep 2015 08:30:56 -0400 |
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From: Kan Liang <kan.liang@intel.com>
This patch set supports per-sample freq/CPU%/CORE_BUSY% print in perf report -D and --stdio. For printing these information, the perf.data file must have been obtained by group read and using special events cycles, ref-cycles, msr/tsc/, msr/aperf/ or msr/mperf/.
- Freq (MHz): The frequency during the sample interval. Needs cycles ref-cycles event. - CPU%: CPU utilization during the sample interval. Needs ref-cycles and msr/tsc/ events. - CORE_BUSY%: actual percent performance (APERF/MPERF%) during the sample interval. Needs msr/aperf/ and msr/mperf/ events.
Here is an example:
$ perf record --freq-perf ~/tchain_edit
$ perf report --stdio --group --show-freq-perf
Overhead FREQ MHz CPU% CORE_BUSY% Command Shared Object Symbol ........................................ ......... ..... .......... ........... ................ ......................
99.54% 99.54% 99.53% 99.53% 99.53% 2301 96 99 tchain_edit tchain_edit [.] f3 0.20% 0.20% 0.20% 0.20% 0.20% 2301 98 99 tchain_edit tchain_edit [.] f2 0.05% 0.05% 0.05% 0.05% 0.05% 2300 98 99 tchain_edit [kernel.vmlinux] [k] read_tsc
Changes since V1: - Save cpu max freq to header when recording - Read cpu max freq and msr type from header when reporting
Changes since V2: - Introduce generic FEAT for CPU related data stored - Make cpu max freq and msr type part of perf_session_env - rename cpu_u to cpu_util - Don't save sample value in perf_sample and discards new iterator. Calculating the freq_perf_info in add_entry_cb callback - Introduce symbol_conf.freq_perf_type for related hpp column visibility
Changes since V3: - add a identifier 'tag' for CPU attributes, max frequency. - add backpointers to evlist for env, and evsel for evlist. - Use bitmask for freq_perf_type - Replace macros by functions to caculate freq, cpu_util and core_busy - Move all caculation codes under symbol_conf.show_freq_perf condition.
Changes since V4: - Store cpu attributes id as tag and more readable cpu_attr
Changes since V5: - Rename freq to max_freq and use it - Add a loop in process_cpu_attributes to facility future extension
Changes since V6: - Split rename perf_session_env and add backpointer to evlist patches
Changes since V7: - Introduce --freq-perf option for perf record - Factor out fix for dump_sample
Kan Liang (7): perf,tools: introduce generic FEAT for CPU attributes perf,tools: read msr pmu type from header. perf,record: introduce --freq-perf option perf,tools: fix dump_sample crash when evsel is NULL. perf,tools: Dump per-sample freq/CPU%/CORE_BUSY% in report -D perf,tools: caculate and save freq/CPU%/CORE_BUSY% in he_stat perf,tools: Show freq/CPU%/CORE_BUSY% in perf report --stdio
tools/perf/Documentation/perf-record.txt | 4 ++ tools/perf/Documentation/perf-report.txt | 12 ++++++ tools/perf/builtin-record.c | 39 +++++++++++++++++- tools/perf/builtin-report.c | 56 +++++++++++++++++++++++++ tools/perf/ui/hist.c | 71 +++++++++++++++++++++++++++++--- tools/perf/util/cpumap.c | 32 ++++++++++++++ tools/perf/util/cpumap.h | 1 + tools/perf/util/header.c | 62 ++++++++++++++++++++++++++++ tools/perf/util/header.h | 13 ++++++ tools/perf/util/hist.h | 3 ++ tools/perf/util/session.c | 33 +++++++++++++-- tools/perf/util/session.h | 64 ++++++++++++++++++++++++++++ tools/perf/util/sort.c | 3 ++ tools/perf/util/sort.h | 3 ++ tools/perf/util/symbol.h | 12 +++++- 15 files changed, 397 insertions(+), 11 deletions(-)
-- 1.8.3.1
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