perf-sched

Langue: en

Version: 09/20/2010 (ubuntu - 24/10/10)

Section: 1 (Commandes utilisateur)

NAME

perf-sched - Tool to trace/measure scheduler properties (latencies)

SYNOPSIS

 perf sched {record|latency|replay|trace}
 

DESCRIPTION

There are 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 occurred 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

perf-record(1)