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Diffstat (limited to 'tools/perf/Documentation/perf-timechart.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-timechart.txt | 42 |
1 files changed, 38 insertions, 4 deletions
diff --git a/tools/perf/Documentation/perf-timechart.txt b/tools/perf/Documentation/perf-timechart.txt index 3ff8bd4f0b4d..bc5990c33dc0 100644 --- a/tools/perf/Documentation/perf-timechart.txt +++ b/tools/perf/Documentation/perf-timechart.txt @@ -8,8 +8,7 @@ perf-timechart - Tool to visualize total system behavior during a workload SYNOPSIS -------- [verse] -'perf timechart' record <command> -'perf timechart' [<options>] +'perf timechart' [<timechart options>] {record} [<record options>] DESCRIPTION ----------- @@ -21,8 +20,8 @@ There are two variants of perf timechart: 'perf timechart' to turn a trace into a Scalable Vector Graphics file, that can be viewed with popular SVG viewers such as 'Inkscape'. -OPTIONS -------- +TIMECHART OPTIONS +----------------- -o:: --output=:: Select the output file (default: output.svg) @@ -35,6 +34,9 @@ OPTIONS -P:: --power-only:: Only output the CPU power section of the diagram +-T:: +--tasks-only:: + Don't output processor state transitions -p:: --process:: Select the processes to display, by name or PID @@ -54,6 +56,38 @@ $ perf timechart Written 10.2 seconds of trace to output.svg. +Record system-wide timechart: + + $ perf timechart record + + then generate timechart and highlight 'gcc' tasks: + + $ perf timechart --highlight gcc + +-n:: +--proc-num:: + Print task info for at least given number of tasks. +-t:: +--topology:: + Sort CPUs according to topology. +--highlight=<duration_nsecs|task_name>:: + Highlight tasks (using different color) that run more than given + duration or tasks with given name. If number is given it's interpreted + as number of nanoseconds. If non-numeric string is given it's + interpreted as task name. + +RECORD OPTIONS +-------------- +-P:: +--power-only:: + Record only power-related events +-T:: +--tasks-only:: + Record only tasks-related events +-g:: +--callchain:: + Do call-graph (stack chain/backtrace) recording + SEE ALSO -------- linkperf:perf-record[1] |