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| author | Emilio G. Cota <cota@braap.org> | 2016-06-27 15:02:05 -0400 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2016-10-26 08:29:01 -0700 |
| commit | 070e3edceaa023109bfa7a1c5c259342e0b6b625 (patch) | |
| tree | becaf5021a41e049e4d992bd062cc0e6c0db6001 /tests/Makefile.include | |
| parent | 37b995f6e7a1cb6fa378c5cd4217b9dd9e1fc98b (diff) | |
| download | qemu-070e3edceaa023109bfa7a1c5c259342e0b6b625.tar.gz | |
tests: add atomic_add-bench
With this microbenchmark we can measure the overhead of emulating atomic
instructions with a configurable degree of contention.
The benchmark spawns $n threads, each performing $o atomic ops (additions)
in a loop. Each atomic operation is performed on a different cache line
(assuming lines are 64b long) that is randomly selected from a range [0, $r).
[ Note: each $foo corresponds to a -foo flag ]
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1467054136-10430-20-git-send-email-cota@braap.org>
Diffstat (limited to 'tests/Makefile.include')
| -rw-r--r-- | tests/Makefile.include | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tests/Makefile.include b/tests/Makefile.include index cd058efc14..22656eaf26 100644 --- a/tests/Makefile.include +++ b/tests/Makefile.include @@ -460,7 +460,8 @@ test-obj-y = tests/check-qint.o tests/check-qstring.o tests/check-qdict.o \ tests/test-opts-visitor.o tests/test-qmp-event.o \ tests/rcutorture.o tests/test-rcu-list.o \ tests/test-qdist.o \ - tests/test-qht.o tests/qht-bench.o tests/test-qht-par.o + tests/test-qht.o tests/qht-bench.o tests/test-qht-par.o \ + tests/atomic_add-bench.o $(test-obj-y): QEMU_INCLUDES += -Itests QEMU_CFLAGS += -I$(SRC_PATH)/tests @@ -507,6 +508,7 @@ tests/test-qht$(EXESUF): tests/test-qht.o $(test-util-obj-y) tests/test-qht-par$(EXESUF): tests/test-qht-par.o tests/qht-bench$(EXESUF) $(test-util-obj-y) tests/qht-bench$(EXESUF): tests/qht-bench.o $(test-util-obj-y) tests/test-bufferiszero$(EXESUF): tests/test-bufferiszero.o $(test-util-obj-y) +tests/atomic_add-bench$(EXESUF): tests/atomic_add-bench.o $(test-util-obj-y) tests/test-qdev-global-props$(EXESUF): tests/test-qdev-global-props.o \ hw/core/qdev.o hw/core/qdev-properties.o hw/core/hotplug.o\ |