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authorHitoshi Mitake <mitake@dcl.info.waseda.ac.jp>2009-11-05 09:31:33 +0900
committerIngo Molnar <mingo@elte.hu>2009-11-08 10:19:18 +0100
commitc7d9300f367f480aee4663a0e3695c5b48859a1a (patch)
tree3377b76fd126f5fb075183151de62a6f0b7aa724 /tools/perf/builtin.h
parente27454cc6352c4226ddc76f5e3a5dedd7dff456a (diff)
downloadlinux-c7d9300f367f480aee4663a0e3695c5b48859a1a.tar.gz
perf bench: Add sched-pipe.c: Benchmark for pipe() system call
This patch adds bench/sched-pipe.c. bench/sched-pipe.c is a benchmark program to measure performance of pipe() system call. This benchmark is based on pipe-test-1m.c by Ingo Molnar: http://people.redhat.com/mingo/cfs-scheduler/tools/pipe-test-1m.c Example of use: % perf bench sched pipe (executing 1000000 pipe operations between two tasks) Total time:4.499 sec 4.499179 usecs/op 222262 ops/sec % perf bench sched pipe -s -l 1000 0.015 Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: fweisbec@gmail.com Cc: Jiri Kosina <jkosina@suse.cz> LKML-Reference: <1257381097-4743-4-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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