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bionic: change properties benchmarks to read a single property 

The properties benchmarks were reading n properties from a property
area with n properties in it, which was making it hard to compare
the time between runs of different sizes.  Change the benchmark
to read a random property per iteration so the numbers between
runs are comparable.

Change-Id: Ib1648ce0948d9038fce76d209608427376cfb8da
This commit is contained in:
Colin Cross 2013-06-18 12:47:38 -07:00
parent 977a33137d
commit 7d90cfa6b5
1 changed files with 6 additions and 6 deletions
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12
tests/property_benchmark.cpp
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@ -87,12 +87,12 @@ static void BM_property_get(int iters, int nprops)
LocalPropertyTestState pa(nprops); LocalPropertyTestState pa(nprops);
char value[PROP_VALUE_MAX]; char value[PROP_VALUE_MAX];
srandom(iters * nprops);
StartBenchmarkTiming(); StartBenchmarkTiming();
for (int i = 0; i < iters; i++) { for (int i = 0; i < iters; i++) {
for (int j = 0; j < nprops; j++) { __system_property_get(pa.names[random() % nprops], value);
__system_property_get(pa.names[j], value);
}
} }
StopBenchmarkTiming(); StopBenchmarkTiming();
} }
@ -104,12 +104,12 @@ static void BM_property_find(int iters, int nprops)
LocalPropertyTestState pa(nprops); LocalPropertyTestState pa(nprops);
srandom(iters * nprops);
StartBenchmarkTiming(); StartBenchmarkTiming();
for (int i = 0; i < iters; i++) { for (int i = 0; i < iters; i++) {
for (int j = 0; j < nprops; j++) { __system_property_find(pa.names[random() % nprops]);
__system_property_find(pa.names[j]);
}
} }
StopBenchmarkTiming(); StopBenchmarkTiming();
} }