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8150183: gc/g1/plab/TestPLABResize.java - previous PLAB size should be less than current

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Reviewed-by: jmasa, dfazunen
This commit is contained in:
Michail Chernov 2016-03-03 16:12:38 +03:00
parent df20815bbb
commit a956d2a0a0
3 changed files with 33 additions and 40 deletions
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35
hotspot/test/gc/g1/plab/TestPLABResize.java
View file

@ -122,29 +122,23 @@ public class TestPLABResize {
.collect(Collectors.toCollection(ArrayList::new));
// Check that desired plab size was changed during iterations.
// It should decrease during first half of iterations
// and increase after.
List<Long> decreasedPlabs = plabSizes.subList(testCase.getIterations(), testCase.getIterations() * 2);
List<Long> increasedPlabs = plabSizes.subList(testCase.getIterations() * 2, testCase.getIterations() * 3);
// The test case does 3 rounds of allocations. The second round of N allocations and GC's
// has a decreasing size of allocations so that iterations N to 2*N -1 will be of decreasing size.
// The third round with iterations 2*N to 3*N -1 has increasing sizes of allocation.
long startDesiredPLABSize = plabSizes.get(testCase.getIterations());
long endDesiredPLABSize = plabSizes.get(testCase.getIterations() * 2 - 1);
Long prev = decreasedPlabs.get(0);
for (int index = 1; index < decreasedPlabs.size(); ++index) {
Long current = decreasedPlabs.get(index);
if (prev < current) {
System.out.println(output);
throw new RuntimeException("Test failed! Expect that previous PLAB size should be greater than current. Prev.size: " + prev + " Current size:" + current);
}
prev = current;
if (startDesiredPLABSize < endDesiredPLABSize) {
System.out.println(output);
throw new RuntimeException("Test failed! Expect that initial PLAB size should be greater than checked. Initial size: " + startDesiredPLABSize + " Checked size:" + endDesiredPLABSize);
}
prev = increasedPlabs.get(0);
for (int index = 1; index < increasedPlabs.size(); ++index) {
Long current = increasedPlabs.get(index);
if (prev > current) {
System.out.println(output);
throw new RuntimeException("Test failed! Expect that previous PLAB size should be less than current. Prev.size: " + prev + " Current size:" + current);
}
prev = current;
startDesiredPLABSize = plabSizes.get(testCase.getIterations() * 2);
endDesiredPLABSize = plabSizes.get(testCase.getIterations() * 3 - 1);
if (startDesiredPLABSize > endDesiredPLABSize) {
System.out.println(output);
throw new RuntimeException("Test failed! Expect that initial PLAB size should be less than checked. Initial size: " + startDesiredPLABSize + " Checked size:" + endDesiredPLABSize);
}
System.out.println("Test passed!");
@ -195,7 +189,6 @@ public class TestPLABResize {
return Arrays.asList("-XX:ParallelGCThreads=" + parGCThreads,
"-XX:ParallelGCBufferWastePct=" + wastePct,
"-XX:+ResizePLAB",
"-Dthreads=" + parGCThreads,
"-Dchunk.size=" + chunkSize,
"-Diterations=" + iterations,
"-XX:NewSize=16m",

6
hotspot/test/gc/g1/plab/lib/AppPLABResize.java
View file

@ -38,7 +38,6 @@ import sun.hotspot.WhiteBox;
* Expects the following properties to be set:
* - iterations - amount of iteration per cycle.
* - chunk.size - size of objects to be allocated
* - threads - number of gc threads (-XX:ParallelGCThreads) to calculate PLAB sizes.
*/
final public class AppPLABResize {
@ -47,7 +46,6 @@ final public class AppPLABResize {
// Defined by properties.
private static final int ITERATIONS = Integer.getInteger("iterations");
private static final long CHUNK = Long.getLong("chunk.size");
private static final int GC_THREADS = Integer.getInteger("threads");
private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
@ -59,13 +57,13 @@ final public class AppPLABResize {
*/
public static void main(String[] args) {
if (ITERATIONS == 0 || CHUNK == 0 || GC_THREADS == 0) {
if (ITERATIONS == 0 || CHUNK == 0) {
throw new IllegalArgumentException("Properties should be set");
}
long wordSize = Platform.is32bit() ? 4l : 8l;
// PLAB size is shared between threads.
long initialMemorySize = wordSize * GC_THREADS * MEM_ALLOC_WORDS;
long initialMemorySize = wordSize * MEM_ALLOC_WORDS;
// Expect changing memory to half during all iterations.
long memChangeStep = initialMemorySize / 2 / ITERATIONS;

32
hotspot/test/gc/g1/plab/lib/LogParser.java
View file

@ -57,7 +57,8 @@ final public class LogParser {
private final String log;
private final Map<Long, Map<ReportType, Map<String,Long>>> reportHolder;
// Contains Map of PLAB statistics for given log.
private final Map<Long, Map<ReportType, Map<String, Long>>> report;
// GC ID
private static final Pattern GC_ID_PATTERN = Pattern.compile("\\[gc,plab\\s*\\] GC\\((\\d+)\\)");
@ -65,7 +66,7 @@ final public class LogParser {
private static final Pattern PAIRS_PATTERN = Pattern.compile("\\w* \\w+:\\s+\\d+");
/**
* Construct LogParser Object
* Construct LogParser object, parse log file with PLAB statistics and store it into report.
*
* @param log - VM Output
*/
@ -74,43 +75,44 @@ final public class LogParser {
throw new IllegalArgumentException("Parameter log should not be null.");
}
this.log = log;
reportHolder = parseLines();
report = parseLines();
}
/**
* @return log which is being processed
* @return log which was processed
*/
public String getLog() {
return log;
}
/**
* Returns list of log entries.
* Returns the GC log entries for Survivor and Old stats.
* The entries are represented as a map of gcID to the StatMap.
*
* @return list of Pair with ReportType and Map of parameters/values.
* @return The log entries for the Survivor and Old stats.
*/
public Map<Long,Map<ReportType, Map<String,Long>>> getEntries() {
return reportHolder;
public Map<Long, Map<ReportType, Map<String, Long>>> getEntries() {
return report;
}
private Map<Long,Map<ReportType, Map<String,Long>>> parseLines() throws NumberFormatException {
private Map<Long, Map<ReportType, Map<String, Long>>> parseLines() throws NumberFormatException {
Scanner lineScanner = new Scanner(log);
Map<Long,Map<ReportType, Map<String,Long>>> allocationStatistics = new HashMap<>();
Map<Long, Map<ReportType, Map<String, Long>>> allocationStatistics = new HashMap<>();
Optional<Long> gc_id;
while (lineScanner.hasNextLine()) {
String line = lineScanner.nextLine();
gc_id = getGcId(line);
if ( gc_id.isPresent() ) {
if (gc_id.isPresent()) {
Matcher matcher = PAIRS_PATTERN.matcher(line);
if (matcher.find()) {
Map<ReportType,Map<String, Long>> oneReportItem;
Map<ReportType, Map<String, Long>> oneReportItem;
ReportType reportType;
if (!allocationStatistics.containsKey(gc_id.get())) {
allocationStatistics.put(gc_id.get(), new EnumMap<>(ReportType.class));
allocationStatistics.put(gc_id.get(), new EnumMap<>(ReportType.class));
}
if ( line.contains("Young") ) {
if (line.contains("Young")) {
reportType = ReportType.SURVIVOR_STATS;
} else {
reportType = ReportType.OLD_STATS;
@ -118,7 +120,7 @@ final public class LogParser {
oneReportItem = allocationStatistics.get(gc_id.get());
if (!oneReportItem.containsKey(reportType)) {
oneReportItem.put(reportType,new HashMap<String, Long>());
oneReportItem.put(reportType, new HashMap<>());
}
// Extract all pairs from log.