diff options
author | Rabin Vincent <[email protected]> | 2014-12-02 16:50:41 +0100 |
---|---|---|
committer | Arnaldo Carvalho de Melo <[email protected]> | 2014-12-09 09:14:08 -0300 |
commit | 1182f883113483cefbc3be0178a2df2dc9ae8b77 (patch) | |
tree | 5cf56d031e524a814e58f9d2a53233a7842c760a /lib/test-string_helpers.c | |
parent | 5bce1a5772cb52aad7e0466484ba07cfbfec2478 (diff) |
perf bench: Fix memcpy/memset output
The memcpy and memset benchmarks return bogus results when iterations >
0 because the iterations value is not taken into account when
calculating the final result:
$ perf bench mem memset --only-prefault --length 1GB --iterations 1
# Running 'mem/memset' benchmark:
# Copying 1GB Bytes ...
20.798669 GB/Sec (with prefault)
$ perf bench mem memset --only-prefault --length 1GB --iterations 10
# Running 'mem/memset' benchmark:
# Copying 1GB Bytes ...
2.086576 GB/Sec (with prefault)
$ perf bench mem memset --only-prefault --length 1GB --iterations 100
# Running 'mem/memset' benchmark:
# Copying 1GB Bytes ...
212.840917 MB/Sec (with prefault)
Fix this.
Signed-off-by: Rabin Vincent <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rabin Vincent <[email protected]>
Cc: Rabin Vincent <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Diffstat (limited to 'lib/test-string_helpers.c')
0 files changed, 0 insertions, 0 deletions