| perf-sched(1) |
| ============== |
| |
| NAME |
| ---- |
| perf-sched - Tool to trace/measure scheduler properties (latencies) |
| |
| SYNOPSIS |
| -------- |
| [verse] |
| 'perf sched' {record|latency|replay|trace} |
| |
| DESCRIPTION |
| ----------- |
| There's four variants of perf sched: |
| |
| 'perf sched record <command>' to record the scheduling events |
| of an arbitrary workload. |
| |
| 'perf sched latency' to report the per task scheduling latencies |
| and other scheduling properties of the workload. |
| |
| 'perf sched trace' to see a detailed trace of the workload that |
| was recorded. |
| |
| 'perf sched replay' to simulate the workload that was recorded |
| via perf sched record. (this is done by starting up mockup threads |
| that mimic the workload based on the events in the trace. These |
| threads can then replay the timings (CPU runtime and sleep patterns) |
| of the workload as it occured when it was recorded - and can repeat |
| it a number of times, measuring its performance.) |
| |
| OPTIONS |
| ------- |
| -D:: |
| --dump-raw-trace=:: |
| Display verbose dump of the sched data. |
| |
| SEE ALSO |
| -------- |
| linkperf:perf-record[1] |
