CentOS 7.0 - man page for perf-bench (centos section 1)

Linux & Unix Commands - Search Man Pages

Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)
PERF-BENCH(1)				   perf Manual				    PERF-BENCH(1)

NAME
       perf-bench - General framework for benchmark suites

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

DESCRIPTION
       This perf bench command is a 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.

       mem
	   Memory access performance.

       all
	   All benchmark subsystems.

   SUITES FOR sched
       messaging
	   Suite for evaluating performance of scheduler and IPC mechanisms. Based on hackbench
	   by Rusty Russell.

       Options of messaging
	   -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

   SUITES FOR mem
       memcpy
	   Suite for evaluating performance of simple memory copy in various ways.

       Options of memcpy
	   -l, --length
	       Specify length of memory to copy (default: 1MB). Available units are B, KB, MB, GB
	       and TB (case insensitive).

	   -r, --routine
	       Specify routine to copy (default: default). Available routines are depend on the
	       architecture. On x86-64, x86-64-unrolled, x86-64-movsq and x86-64-movsb are
	       supported.

	   -i, --iterations
	       Repeat memcpy invocation this number of times.

	   -c, --cycle
	       Use perf's cpu-cycles event instead of gettimeofday syscall.

	   -o, --only-prefault
	       Show only the result with page faults before memcpy.

	   -n, --no-prefault
	       Show only the result without page faults before memcpy.

	   memset
	       Suite for evaluating performance of simple memory set in various ways.

       Options of memset
	   -l, --length
	       Specify length of memory to set (default: 1MB). Available units are B, KB, MB, GB
	       and TB (case insensitive).

	   -r, --routine
	       Specify routine to set (default: default). Available routines are depend on the
	       architecture. On x86-64, x86-64-unrolled, x86-64-stosq and x86-64-stosb are
	       supported.

	   -i, --iterations
	       Repeat memset invocation this number of times.

	   -c, --cycle
	       Use perf's cpu-cycles event instead of gettimeofday syscall.

	   -o, --only-prefault
	       Show only the result with page faults before memset.

	   -n, --no-prefault
	       Show only the result without page faults before memset.

SEE ALSO
       perf(1)

perf					    06/30/2014				    PERF-BENCH(1)


All times are GMT -4. The time now is 03:36 AM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
×
UNIX.COM Login
Username:
Password:  
Show Password





Not a Forum Member?
Forgot Password?