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Add ttimechart.py, a textual based interactive timechart, and a --tui
option to perf timechart that launches it through perf script. Rather
than writing an SVG file, per-CPU (busy, frequency and idle state),
per-task (running, runnable and blocked) and I/O timelines are shown in
the terminal along with a summary table. The timelines can be zoomed,
panned and the state of the selected row at the cursor is described,
including the task that woke it. The -i, -P, -T and -p options are
passed to the script.
The data is loaded in a background thread and the timelines are shown
and updated as it loads. A --dump option prints a text summary without
the UI.
Committer testing:
Fist record a short session with:
root@x2:/home/acme/git/perf-tools-next# perf timechart record
^C[ perf record: Woken up 9 times to write data ]
[ perf record: Captured and wrote 4.489 MB perf.data (29719 samples) ]
root@x2:/home/acme/git/perf-tools-next#
Then try the TUI with:
root@x2:/home/acme/git/perf-tools-next# tools/perf/python/ttimechart.py
or:
root@x2:/home/acme/git/perf-tools-next# perf timechart --tui
Assisted-by: Antigravity:gemini-3.1-pro
Signed-off-by: Alice Rogers <alice.mei.rogers@gmail.com>
Co-developed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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