| commit | 070e3edceaa023109bfa7a1c5c259342e0b6b625 | |
| author | Emilio G. Cota <cota@braap.org> | |
| Mon, 27 Jun 2016 19:02:05 +0000 (27 15:02 -0400) | ||
| committer | Richard Henderson <rth@twiddle.net> | |
| Wed, 26 Oct 2016 15:29:01 +0000 (26 08:29 -0700) | ||
| tree | becaf5021a41e049e4d992bd062cc0e6c0db6001 | treesnapshot (tar.gz zip) |
| parent | 37b995f6e7a1cb6fa378c5cd4217b9dd9e1fc98b | commitdiff |
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>
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>
| tests/.gitignore | diffblobblamehistory | |
| tests/Makefile.include | diffblobblamehistory | |
| tests/atomic_add-bench.c | [new file with mode: 0644] | blob |