[RFC PATCH v2 00/17] Perf stat metric grouping with hardware information
From: weilin . wang
Date: Fri Oct 13 2023 - 21:52:31 EST
From: Weilin Wang <weilin.wang@xxxxxxxxx>
Chanages in v2:
- Updated the ordering of patches and removed bug fixing patches [Kan]
- Move code into dedicated patches or more related patches [Kan]
- Removed unnecessary code [Kan, Yang]
Grouping algorithm details:
- Currently, this grouping method groups a combined list of events, which is a
unique list of events for the required metrics.
- The grouping process traverses the event list to build up a event_info_list
that includes counter restriction rules of each event. It also creates a
pmu_info_list for the counter info - the number of gp counters and fixed
counters available in each PMU in current system. When grouping is in progress,
there are two bitmaps used to represent usages of gp counters and fixed
counters in each group. These two bitmaps are initialized based on the two
counter sizes of the corresponding PMU.
Assumption: this method reads counter availablility from data described in JSON
files and builds up groups based on this info.
- The grouping step traverses the event_info_list. For each event, it checks
bitmaps to get counter availability in current group. It sets the bit and
inserts event into the group if found a vacant counter that fits the
restrictions of the event. Otherwise, it creates a new group, places event in
it, and then inserts it into the group list.
v1: https://lore.kernel.org/all/20230925061824.3818631-1-weilin.wang@xxxxxxxxx/
Weilin Wang (17):
perf stat: Add hardware-grouping cmd option to perf stat
perf stat: Add basic functions for the hardware-grouping stat cmd
option
perf pmu-events: Add functions in jevent.py to parse counter and event
info for hardware aware grouping
perf pmu-events: Add counter info into JSON files for SapphireRapids
perf pmu-events: Add event counter data for Cascadelakex
perf pmu-events: Add event counter data for Icelakex
perf stat: Add functions to set counter bitmaps for hardware-grouping
method
perf stat: Add functions to get counter info
perf stat: Add functions to create new group and assign events into
groups for hardware-grouping method
perf stat: Add build string function and topdown events handling in
hardware-grouping
perf stat: Add function to handle special events in hardware-grouping
perf stat: Add function to combine metrics for hardware-grouping
perf stat: Handle taken alone in hardware-grouping
perf stat: Handle NMI in hardware-grouping
perf stat: Code refactoring in hardware-grouping
perf stat: Add tool events support in hardware-grouping
perf pmu-events: Add event counter data for Tigerlake
tools/lib/bitmap.c | 20 +
tools/perf/builtin-stat.c | 7 +
.../arch/x86/cascadelakex/cache.json | 1237 ++++++++++++
.../arch/x86/cascadelakex/counter.json | 17 +
.../arch/x86/cascadelakex/floating-point.json | 16 +
.../arch/x86/cascadelakex/frontend.json | 68 +
.../arch/x86/cascadelakex/memory.json | 751 ++++++++
.../arch/x86/cascadelakex/other.json | 168 ++
.../arch/x86/cascadelakex/pipeline.json | 102 +
.../arch/x86/cascadelakex/uncore-cache.json | 1138 +++++++++++
.../x86/cascadelakex/uncore-interconnect.json | 1272 +++++++++++++
.../arch/x86/cascadelakex/uncore-io.json | 394 ++++
.../arch/x86/cascadelakex/uncore-memory.json | 509 +++++
.../arch/x86/cascadelakex/uncore-power.json | 25 +
.../arch/x86/cascadelakex/virtual-memory.json | 28 +
.../pmu-events/arch/x86/icelakex/cache.json | 98 +
.../pmu-events/arch/x86/icelakex/counter.json | 17 +
.../arch/x86/icelakex/floating-point.json | 13 +
.../arch/x86/icelakex/frontend.json | 55 +
.../pmu-events/arch/x86/icelakex/memory.json | 53 +
.../pmu-events/arch/x86/icelakex/other.json | 52 +
.../arch/x86/icelakex/pipeline.json | 92 +
.../arch/x86/icelakex/uncore-cache.json | 965 ++++++++++
.../x86/icelakex/uncore-interconnect.json | 1667 +++++++++++++++++
.../arch/x86/icelakex/uncore-io.json | 966 ++++++++++
.../arch/x86/icelakex/uncore-memory.json | 186 ++
.../arch/x86/icelakex/uncore-power.json | 26 +
.../arch/x86/icelakex/virtual-memory.json | 22 +
.../arch/x86/sapphirerapids/cache.json | 104 +
.../arch/x86/sapphirerapids/counter.json | 17 +
.../x86/sapphirerapids/floating-point.json | 25 +
.../arch/x86/sapphirerapids/frontend.json | 98 +-
.../arch/x86/sapphirerapids/memory.json | 44 +
.../arch/x86/sapphirerapids/other.json | 40 +
.../arch/x86/sapphirerapids/pipeline.json | 118 ++
.../arch/x86/sapphirerapids/uncore-cache.json | 534 +++++-
.../arch/x86/sapphirerapids/uncore-cxl.json | 56 +
.../sapphirerapids/uncore-interconnect.json | 476 +++++
.../arch/x86/sapphirerapids/uncore-io.json | 373 ++++
.../x86/sapphirerapids/uncore-memory.json | 391 ++++
.../arch/x86/sapphirerapids/uncore-power.json | 24 +
.../x86/sapphirerapids/virtual-memory.json | 20 +
.../pmu-events/arch/x86/tigerlake/cache.json | 65 +
.../arch/x86/tigerlake/counter.json | 7 +
.../arch/x86/tigerlake/floating-point.json | 13 +
.../arch/x86/tigerlake/frontend.json | 56 +
.../pmu-events/arch/x86/tigerlake/memory.json | 31 +
.../pmu-events/arch/x86/tigerlake/other.json | 4 +
.../arch/x86/tigerlake/pipeline.json | 96 +
.../x86/tigerlake/uncore-interconnect.json | 11 +
.../arch/x86/tigerlake/uncore-memory.json | 6 +
.../arch/x86/tigerlake/uncore-other.json | 1 +
.../arch/x86/tigerlake/virtual-memory.json | 20 +
tools/perf/pmu-events/jevents.py | 177 +-
tools/perf/pmu-events/pmu-events.h | 26 +-
tools/perf/util/metricgroup.c | 947 ++++++++++
tools/perf/util/metricgroup.h | 106 ++
tools/perf/util/pmu.c | 5 +
tools/perf/util/pmu.h | 1 +
tools/perf/util/stat.h | 1 +
60 files changed, 13832 insertions(+), 25 deletions(-)
create mode 100644 tools/perf/pmu-events/arch/x86/cascadelakex/counter.json
create mode 100644 tools/perf/pmu-events/arch/x86/icelakex/counter.json
create mode 100644 tools/perf/pmu-events/arch/x86/sapphirerapids/counter.json
create mode 100644 tools/perf/pmu-events/arch/x86/tigerlake/counter.json
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2.39.3