Gargi-jais11 commented on code in PR #9858:
URL: https://github.com/apache/ozone/pull/9858#discussion_r2910765370
##########
hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/scm/node/TestDiskBalancerPolicyPerformance.java:
##########
@@ -181,90 +177,165 @@ private void testPolicyPerformance(String policyName,
ContainerChoosingPolicy po
for (int i = 0; i < NUM_THREADS; i++) {
executor.submit(() -> {
try {
- long threadStart = System.nanoTime();
- int containerChosen = 0;
- int containerNotChosen = 0;
+ int containerCandidateChosen = 0;
+ int containerCandidateNotChosen = 0;
int failures = 0;
- // Choose a random volume
- HddsVolume srcVolume = volumes.get(rand.nextInt(NUM_VOLUMES));
- HddsVolume destVolume;
-
- do {
- destVolume = volumes.get(rand.nextInt(NUM_VOLUMES));
- } while (srcVolume.equals(destVolume));
for (int j = 0; j < NUM_ITERATIONS; j++) {
+ // Block all volumes except the highest-util (source) - no
destination has space
+ if (rand.nextDouble() < 0.05 && volumes.size() >= 2) {
+ List<HddsVolume> sorted = new ArrayList<>(volumes);
+ sorted.sort(Comparator.comparingDouble(v ->
+ v.getCurrentUsage().getUsedSpace() / (double) Math.max(1,
v.getCurrentUsage().getCapacity())));
+ for (int k = 0; k < sorted.size() - 1; k++) {
+ HddsVolume v = sorted.get(k);
+ long avail = v.getCurrentUsage().getAvailable();
+ if (avail > 0) {
+ v.incCommittedBytes(avail);
+ }
+ }
+ }
+
+ long threadStart = System.nanoTime();
try {
- ContainerData c = policy.chooseContainer(ozoneContainer,
srcVolume,
- destVolume, inProgressContainerIDs, THRESHOLD, volumeSet,
null);
- if (c == null) {
- containerNotChosen++;
+ ContainerCandidate candidate =
pol.chooseVolumesAndContainer(ozoneContainer,
+ volumeSet, deltaMap, inProgressContainerIDs, THRESHOLD);
+
+ if (candidate == null) {
+ containerCandidateNotChosen++;
} else {
- containerChosen++;
+ containerCandidateChosen++;
+ ContainerID chosenId =
ContainerID.valueOf(candidate.getContainerData().getContainerID());
if (inProgressContainerIDs.size() < MAX_IN_PROGRESS) {
-
inProgressContainerIDs.add(ContainerID.valueOf(c.getContainerID()));
+ inProgressContainerIDs.add(chosenId);
}
+ deltaMap.compute(candidate.getSourceVolume(), (k, v) -> (v ==
null ? 0L : v)
+ - candidate.getContainerData().getBytesUsed());
}
} catch (Exception e) {
failures++;
+ } finally {
+ totalTimeNanos.addAndGet(System.nanoTime() - threadStart);
}
}
- long threadEnd = System.nanoTime();
- totalTimeNanos.addAndGet(threadEnd - threadStart);
- containerChosenCount.addAndGet(containerChosen);
- containerNotChosenCount.addAndGet(containerNotChosen);
+ pairChosenCount.addAndGet(containerCandidateChosen);
+ pairNotChosenCount.addAndGet(containerCandidateNotChosen);
failureCount.addAndGet(failures);
} finally {
latch.countDown();
}
});
}
- // Wait max 5 minutes for test completion
assertTrue(latch.await(5, TimeUnit.MINUTES), "Test timed out");
long totalOperations = (long) NUM_THREADS * NUM_ITERATIONS;
- double avgTimePerOp = (double) totalTimeNanos.get() / totalOperations;
- double opsPerSec = totalOperations / (totalTimeNanos.get() /
1_000_000_000.0);
-
- System.out.println("Performance results for " + policyName);
+ int selections = pairChosenCount.get();
+ int noSelection = pairNotChosenCount.get();
+ System.out.println("Performance results for " + testName);
System.out.println("Total volumes: " + NUM_VOLUMES);
System.out.println("Total containers: " + NUM_CONTAINERS);
System.out.println("Total threads: " + NUM_THREADS);
System.out.println("Total operations: " + totalOperations);
- System.out.println("Container Chosen operations: " +
containerChosenCount.get());
- System.out.println("Container Not Chosen operations: " +
containerNotChosenCount.get());
- System.out.println("Failed operations: " + failureCount.get());
+ System.out.println("Container Candidate Chosen (src+dest+container): " +
selections);
Review Comment:
```
Created 20 volumes in 15 ms
Created 100000 containers in 1841 ms
Performance results for VolumeAndContainerSelection
Total volumes: 20
Total containers: 100000
Total threads: 10
Total operations: 100000
Container Candidate Chosen (src+dest+container): 99970
No Container Candidate Chosen: 30
Failed: 0
Total time (ms): 16476
Avg time per operation (ns): 164762.39932
Operations per second: 6069.345943778164
```
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