---
name: "perf_3.2-bench"
section: "1"
platform: "linux"
package: "linux-tools-3.2"
version: "3.2.17-1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/perf_3.2-bench"
---

# perf\_3.2-bench(1)

General framework for benchmark suites

## 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
```

## SEE ALSO

[**perf**(1)](/perf/1.md)