Kaladaran/briar
0
0
Fork 0
mirror of https://code.briarproject.org/briar/briar.git synced 2026-02-12 10:49:06 +01:00
Code Issues Projects Releases Wiki Activity

Measure the first run to see the extent of warm-up.

Browse Source
This commit is contained in:
akwizgran
2017-12-07 17:50:10 +00:00
parent 3178c16bac
commit 302ced1476
1 changed files with 11 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
bramble-core/src/test/java/org/briarproject/bramble/db/JdbcDatabasePerformanceTest.java
View File

@@ -243,16 +243,23 @@ public abstract class JdbcDatabasePerformanceTest extends BrambleTestCase {
populateDatabase(db);
db.close();
db = openDatabase();
List<Long> durations = new ArrayList<>(MEASUREMENT_ITERATIONS);
// Measure the first run
long start = System.nanoTime();
task.run(db);
long firstDuration = System.nanoTime() - start;
// Warm up the JIT and DB indices
for (int i = 0; i < WARMUP_ITERATIONS; i++) task.run(db);
// Measure the next runs
List<Long> durations = new ArrayList<>(MEASUREMENT_ITERATIONS);
for (int i = 0; i < MEASUREMENT_ITERATIONS; i++) {
long start = System.nanoTime();
start = System.nanoTime();
task.run(db);
durations.add(System.nanoTime() - start);
}
db.close();
String result = String.format("%s\t%,d\t%,d\t%,d", name,
(long) getMean(durations), (long) getMedian(durations),
String result = String.format("%s\t%,d\t%,d\t%,d\t%,d", name,
firstDuration, (long) getMean(durations),
(long) getMedian(durations),
(long) getStandardDeviation(durations));
System.out.println(result);
PrintWriter out =