/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.ignite.internal.visor.igfs;
import java.util.Collections;
import java.util.List;
import org.apache.ignite.igfs.IgfsMode;
import org.apache.ignite.internal.util.typedef.F;
/**
* Various global constants for IGFS profiler.
*/
public class VisorIgfsProfiler {
/** Default file block size to calculate uniformity. */
public static final int UNIFORMITY_DFLT_BLOCK_SIZE = 4096;
/** Default number of blocks to split file for uniformity calculations. */
public static final int UNIFORMITY_BLOCKS = 100;
/**
* Aggregate IGFS profiler entries.
*
* @param entries Entries to sum.
* @return Single aggregated entry.
*/
public static VisorIgfsProfilerEntry aggregateIgfsProfilerEntries(List<VisorIgfsProfilerEntry> entries) {
assert !F.isEmpty(entries);
if (entries.size() == 1)
return entries.get(0); // No need to aggregate.
else {
String path = entries.get(0).getPath();
Collections.sort(entries, VisorIgfsProfilerEntry.ENTRY_TIMESTAMP_COMPARATOR);
long ts = 0;
long size = 0;
long bytesRead = 0;
long readTime = 0;
long userReadTime = 0;
long bytesWritten = 0;
long writeTime = 0;
long userWriteTime = 0;
IgfsMode mode = null;
VisorIgfsProfilerUniformityCounters counters = new VisorIgfsProfilerUniformityCounters();
for (VisorIgfsProfilerEntry entry : entries) {
// Take last timestamp.
ts = entry.getTimestamp();
// Take last size.
size = entry.getSize();
// Take last mode.
mode = entry.getMode();
// Aggregate metrics.
bytesRead += entry.getBytesRead();
readTime += entry.getReadTime();
userReadTime += entry.getUserReadTime();
bytesWritten += entry.getBytesWritten();
writeTime += entry.getWriteTime();
userWriteTime += entry.getUserWriteTime();
counters.aggregate(entry.getCounters());
}
return new VisorIgfsProfilerEntry(path, ts, mode, size, bytesRead, readTime, userReadTime,
bytesWritten, writeTime, userWriteTime, counters);
}
}
}