dcapwell commented on code in PR #28:
URL: https://github.com/apache/cassandra-accord/pull/28#discussion_r1089587525
##########
accord-core/src/test/java/accord/impl/basic/DelayedExecutorService.java:
##########
@@ -0,0 +1,80 @@
+package accord.impl.basic;
+
+import org.apache.cassandra.concurrent.FutureTask;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Random;
+import java.util.concurrent.AbstractExecutorService;
+import java.util.concurrent.Callable;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+public class DelayedExecutorService extends AbstractExecutorService
+{
+ private static final int THREAD_SCHEDULING_OVERHEAD_MILLIS = 5;
+
+ private final PendingQueue pending;
+ private final Random random;
+
+ public DelayedExecutorService(PendingQueue pending, Random random)
+ {
+ this.pending = pending;
+ this.random = random;
+ }
+
+ @Override
+ protected <T> Task<T> newTaskFor(Runnable runnable, T value) {
+ return newTaskFor(Executors.callable(runnable, value));
+ }
+
+ @Override
+ protected <T> Task<T> newTaskFor(Callable<T> callable) {
+ return new Task<>(callable);
+ }
+
+ private Task<?> newTaskFor(Runnable command) {
+ return command instanceof Task ? (Task<?>) command :
newTaskFor(command, null);
+ }
+
+ @Override
+ public void execute(Runnable command) {
+ Task<?> task = newTaskFor(command);
+ int jitterMillis = THREAD_SCHEDULING_OVERHEAD_MILLIS +
random.nextInt(1000);
Review Comment:
pushed change
```
this.jitterInNano = new SegmentedIntRange(
new IntRange(random, microToNanos(0), microToNanos(50)),
new IntRange(random, microToNanos(50), msToNanos(5)),
// this is different from Apache Cassandra Simulator as this
is computed differently for each executor
// rather than being a global config
new Decision.FixedChance(random, new IntRange(random, 1,
10).getInt() / 100f)
);
```
I tried zipf to bias to higher values in the range, but math3's version
added a lot more cost, so went with simple uniform.
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