Examples of com.google.common.base.Stopwatch.elapsed()

com.google.common.base.Stopwatch.elapsed()
Returns the current elapsed time shown on this stopwatch, expressed in the desired time unit, with any fraction rounded down.
Note that the overhead of measurement can be more than a microsecond, so it is generally not useful to specify {@link TimeUnit#NANOSECONDS}precision here. @since 14.0 (since 10.0 as {@code elapsedTime()})

      client.connect();
      ParquetResultsListener listener = new ParquetResultsListener();
      Stopwatch watch = new Stopwatch();
      watch.start();
      client.runQuery(UserProtos.QueryType.PHYSICAL, Resources.toString(Resources.getResource(fileName),Charsets.UTF_8), listener);
      System.out.println(String.format("Got %d total records in %d seconds", listener.await(), watch.elapsed(TimeUnit.SECONDS)));
      client.close();
    }
  }


  @AfterClass

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  @Override
  public void endSlice() {
    Stopwatch stopwatch = Stopwatch.createStarted();
    sortData();
    log.info(
        "Sorted " + valuesHeld + " items in " + stopwatch.elapsed(TimeUnit.MILLISECONDS) + "ms");
    stopwatch.reset().start();
    writeOutData();
    log.info("Wrote " + getStoredSize() + " bytes of data in "
        + stopwatch.elapsed(TimeUnit.MILLISECONDS) + "ms");
  }

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    log.info(
        "Sorted " + valuesHeld + " items in " + stopwatch.elapsed(TimeUnit.MILLISECONDS) + "ms");
    stopwatch.reset().start();
    writeOutData();
    log.info("Wrote " + getStoredSize() + " bytes of data in "
        + stopwatch.elapsed(TimeUnit.MILLISECONDS) + "ms");
  }


  private int getStoredSize() {
    return memoryBuffer.position();
  }

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  @Benchmark long stopwatch(int reps) {
    long total = 0;
    for (int i = 0; i < reps; i++) {
      Stopwatch s = Stopwatch.createStarted();
      // here is where you would do something
      total += s.elapsed(TimeUnit.NANOSECONDS);
    }
    return total;
  }


  @Benchmark long manual(int reps) {

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            try (Statement statement = connection.createStatement()) {
                TimeLimiter limiter = new SimpleTimeLimiter();
                Stopwatch stopwatch = Stopwatch.createStarted();
                Statement limitedStatement = limiter.newProxy(statement, Statement.class, timeout.toMillis(), TimeUnit.MILLISECONDS);
                try (final ResultSet resultSet = limitedStatement.executeQuery(query.getQuery())) {
                    List<List<Object>> results = limiter.callWithTimeout(getResultSetConverter(resultSet), timeout.toMillis() - stopwatch.elapsed(TimeUnit.MILLISECONDS), TimeUnit.MILLISECONDS, true);
                    return new QueryResult(State.SUCCESS, null, nanosSince(start), results);
                }
                catch (AssertionError e) {
                    if (e.getMessage().startsWith("unimplemented type:")) {
                        return new QueryResult(State.INVALID, null, null, ImmutableList.<List<Object>>of());

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            Stopwatch partitionTimer = Stopwatch.createStarted();
            PartitionResult matchingPartitions = splitManager.getPartitions(node.getTable(), Optional.of(tupleDomain));
            List<Partition> partitions = matchingPartitions.getPartitions();
            TupleDomain undeterminedTupleDomain = matchingPartitions.getUndeterminedTupleDomain();
            log.debug("Partition retrieval, table %s (%d partitions): %dms", node.getTable(), partitions.size(), partitionTimer.elapsed(TimeUnit.MILLISECONDS));


            Expression unevaluatedDomainPredicate = DomainTranslator.toPredicate(undeterminedTupleDomain, ImmutableBiMap.copyOf(node.getAssignments()).inverse());


            // Construct the post scan predicate. Add the unevaluated TupleDomain back first since those are generally cheaper to evaluate than anything we can't extract
            Expression postScanPredicate = combineConjuncts(unevaluatedDomainPredicate, extractionRemainingExpression);

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        checkState(tableMetadata != null, "no metadata for %s found", tableHandle);


        Set<TablePartition> tablePartitions = shardManager.getPartitions(tableHandle);


        log.debug("Partition retrieval, raptor table %s (%d partitions): %dms", tableHandle, tablePartitions.size(), partitionTimer.elapsed(TimeUnit.MILLISECONDS));


        Multimap<String, ? extends PartitionKey> allPartitionKeys = shardManager.getAllPartitionKeys(tableHandle);
        Map<String, ConnectorColumnHandle> columnHandles = metadata.getColumnHandles(tableHandle);


        log.debug("Partition key retrieval, raptor table %s (%d keys): %dms", tableHandle, allPartitionKeys.size(), partitionTimer.elapsed(TimeUnit.MILLISECONDS));

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        log.debug("Partition retrieval, raptor table %s (%d partitions): %dms", tableHandle, tablePartitions.size(), partitionTimer.elapsed(TimeUnit.MILLISECONDS));


        Multimap<String, ? extends PartitionKey> allPartitionKeys = shardManager.getAllPartitionKeys(tableHandle);
        Map<String, ConnectorColumnHandle> columnHandles = metadata.getColumnHandles(tableHandle);


        log.debug("Partition key retrieval, raptor table %s (%d keys): %dms", tableHandle, allPartitionKeys.size(), partitionTimer.elapsed(TimeUnit.MILLISECONDS));


        List<ConnectorPartition> partitions = ImmutableList.copyOf(transform(tablePartitions, partitionMapper(allPartitionKeys, columnHandles)));


        log.debug("Partition generation, raptor table %s (%d partitions): %dms", tableHandle, partitions.size(), partitionTimer.elapsed(TimeUnit.MILLISECONDS));

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        log.debug("Partition key retrieval, raptor table %s (%d keys): %dms", tableHandle, allPartitionKeys.size(), partitionTimer.elapsed(TimeUnit.MILLISECONDS));


        List<ConnectorPartition> partitions = ImmutableList.copyOf(transform(tablePartitions, partitionMapper(allPartitionKeys, columnHandles)));


        log.debug("Partition generation, raptor table %s (%d partitions): %dms", tableHandle, partitions.size(), partitionTimer.elapsed(TimeUnit.MILLISECONDS));


        return new ConnectorPartitionResult(partitions, tupleDomain);
    }


    @Override

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                ConnectorSplit split = new RaptorSplit(entry.getKey(), addresses);
                splits.add(split);
            }
        }


        log.debug("Split retrieval for %d partitions (%d splits): %dms", partitions.size(), splits.size(), splitTimer.elapsed(TimeUnit.MILLISECONDS));


        // The query engine assumes that splits are returned in a somewhat random fashion. The Raptor split manager,
        // because it loads the data from a database table, will return the splits somewhat ordered by node ID,
        // so only a subset of nodes are fired up. Shuffle the splits to ensure random distribution.
        Collections.shuffle(splits);

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