| a630784fe1124ae5956da2639f1b324c15365fa7 |
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17-Feb-2016 |
Elliott Hughes <enh@google.com> |
Switch bionic over to google-benchmark.
Also removes the old benchmarking library.
(cherry picked from commit 281e06ba69ce6f591697acf65a24651050809920)
Bug: http://b/24803663
Change-Id: Idde5aa759b03d2b3cb51e32785beaf1c46476fa3
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| df4942c04a63ae6e4f5c78ece9f696d6b8b74d32 |
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18-Feb-2015 |
Christopher Ferris <cferris@google.com> |
Refactor the benchmark code.
Changes:
- Modify the benchmarks to derive from a single Benchmark object.
- Rewrite the main iteration code. This includes changing the iteration
code to use the actual total time calculated by the benchmark as a basis
for determining whether there are enough iterations instead of using
the time it takes to run the benchmark.
- Allow benchmarks to take no argument, int, or double.
- Fix the PrettyInt printer for negative integers.
- Modify the max column width name to include the whole name including
the arg part.
- Reformat property_benchmark.cpp in line with the rest of the code.
- Modify a few of the math benchmarks to take an argument instead of
separate benchmarks for the same function with different args.
- Create a vector of regex_t structs to represent the args all at
once instead of when running each benchmark.
This change is in preparation for adding new math based benchmarks.
Tested by running on a nexus flo running at max using the new code
and the old code and comparing. All of the numbers are similar, but
some of the iterations are different due to the slightly different
algorithm used.
Change-Id: I57ad1f3ff083282b9ffeb72e687cab369ce3523a
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| 5d064464f139cc0b5fed57e3c439d441ad946fe9 |
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10-Feb-2015 |
Mark Salyzyn <salyzyn@google.com> |
bionic: benchmarks: Add BM_semaphore_sem_post_sem_wait
This test reports the overhead of sem_post to sem_wake for a low thread count
and a high thread count.
Change-Id: Ic30dcc8a78d754979117446bf3a28b7575cabac7
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| 7e50fb2a681c858ec7d85ff92e97794f41fd1f08 |
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09-Feb-2015 |
Mark Salyzyn <salyzyn@google.com> |
bionic: benchmarks: Add BM_semaphore_sem_post
This test tries its best to report the producer side underlying futex
wake syscall overhead wthin sem_post. It does not measure the time it
takes for the wakeup to propagate to the consumer. It suffers from
clock_gettime syscall overhead, so subtract that. Lock the CPU speed
for consistent results as we may not reach >50% cpu utilization.
Change-Id: I02fa9dab2e6ac27202f0290115150bd3c8de00f2
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| b28e490b7350b21c5ae9e5b3bb3e082d8357a1b0 |
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11-Mar-2014 |
Elliott Hughes <enh@google.com> |
Add various benchmarks.
These are based on ones from system/extras/tests/bionic/.
Change-Id: I7b1ae15a2ca5d1031a6a511d97b88125c1770047
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