PERF\-BENCH

Section: Misc. Reference Manual Pages (1)
Updated: 10/16/2012
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NAME

perf-bench - General framework for benchmark suites

SYNOPSIS

perf bench [<common options>] <subsystem> <suite> [<options>]

DESCRIPTION

This perf bench command is general framework for benchmark suites.

COMMON OPTIONS

-f, --format=

: Specify format style. Current available format styles are:

default

: Default style. This is mainly for human reading.


.ft C
% perf bench sched pipe                      # with no style specified
(executing 1000000 pipe operations between two tasks)
        Total time:5.855 sec
                5.855061 usecs/op
                170792 ops/sec
.ft

simple

: This simple style is friendly for automated processing by scripts.


.ft C
% perf bench --format=simple sched pipe      # specified simple
5.988
.ft

SUBSYSTEM

sched

: Scheduler and IPC mechanisms.

SUITES FOR sched

messaging

: Suite for evaluating performance of scheduler and IPC mechanisms. Based on hackbench by Rusty Russell.

Options of pipe

-p, --pipe

: Use pipe() instead of socketpair()

-t, --thread

: Be multi thread instead of multi process

-g, --group=

: Specify number of groups

-l, --loop=

: Specify number of loops

Example of messaging


.ft C
% perf bench sched messaging                 # run with default
options (20 sender and receiver processes per group)
(10 groups == 400 processes run)

      Total time:0.308 sec

% perf bench sched messaging -t -g 20        # be multi-thread, with 20 groups
(20 sender and receiver threads per group)
(20 groups == 800 threads run)

      Total time:0.582 sec
.ft

pipe

: Suite for pipe() system call. Based on pipe-test-1m.c by Ingo Molnar.

Options of pipe

-l, --loop=

: Specify number of loops.

Example of pipe


.ft C
% perf bench sched pipe
(executing 1000000 pipe operations between two tasks)

        Total time:8.091 sec
                8.091833 usecs/op
                123581 ops/sec

% perf bench sched pipe -l 1000              # loop 1000
(executing 1000 pipe operations between two tasks)

        Total time:0.016 sec
                16.948000 usecs/op
                59004 ops/sec
.ft

Index

SUITES FOR sched

SEE ALSO

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