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test/gc/g1/TestLargePageUseForAuxMemory.java
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*** 34,43 ****
--- 34,45 ----
* sun.hotspot.WhiteBox$WhiteBoxPermission
* @run main/othervm -Xbootclasspath/a:. -XX:+UseG1GC -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+IgnoreUnrecognizedVMOptions -XX:+UseLargePages TestLargePageUseForAuxMemory
*/
import java.lang.Math;
+ import java.lang.reflect.InvocationTargetException;
+ import java.lang.reflect.Method;
import jdk.test.lib.*;
import jdk.test.lib.Asserts;
import sun.hotspot.WhiteBox;
*** 45,62 ****
static final long HEAP_REGION_SIZE = 1 * 1024 * 1024;
static long largePageSize;
static long smallPageSize;
static long allocGranularity;
static void checkSmallTables(OutputAnalyzer output, long expectedPageSize) throws Exception {
! output.shouldContain("G1 'Block offset table': pg_sz=" + expectedPageSize);
! output.shouldContain("G1 'Card counts table': pg_sz=" + expectedPageSize);
}
static void checkBitmaps(OutputAnalyzer output, long expectedPageSize) throws Exception {
! output.shouldContain("G1 'Prev Bitmap': pg_sz=" + expectedPageSize);
! output.shouldContain("G1 'Next Bitmap': pg_sz=" + expectedPageSize);
}
static void testVM(String what, long heapsize, boolean cardsShouldUseLargePages, boolean bitmapShouldUseLargePages) throws Exception {
System.out.println(what + " heapsize " + heapsize + " card table should use large pages " + cardsShouldUseLargePages + " " +
"bitmaps should use large pages " + bitmapShouldUseLargePages);
--- 47,79 ----
static final long HEAP_REGION_SIZE = 1 * 1024 * 1024;
static long largePageSize;
static long smallPageSize;
static long allocGranularity;
+ static void checkSize(OutputAnalyzer output, long expectedSize, String pattern) {
+ String pageSizeStr = output.firstMatch(pattern, 1);
+
+ if (pageSizeStr == null) {
+ output.reportDiagnosticSummary();
+ throw new RuntimeException("Match from '" + pattern + "' got 'null' expected: " + expectedSize);
+ }
+
+ long size = parseMemoryString(pageSizeStr);
+ if (size != expectedSize) {
+ output.reportDiagnosticSummary();
+ throw new RuntimeException("Match from '" + pattern + "' got " + size + " expected: " + expectedSize);
+ }
+ }
+
static void checkSmallTables(OutputAnalyzer output, long expectedPageSize) throws Exception {
! checkSize(output, expectedPageSize, "Block Offset Table: .*page_size=([^ ]+)");
! checkSize(output, expectedPageSize, "Card Counts Table: .*page_size=([^ ]+)");
}
static void checkBitmaps(OutputAnalyzer output, long expectedPageSize) throws Exception {
! checkSize(output, expectedPageSize, "Prev Bitmap: .*page_size=([^ ]+)");
! checkSize(output, expectedPageSize, "Next Bitmap: .*page_size=([^ ]+)");
}
static void testVM(String what, long heapsize, boolean cardsShouldUseLargePages, boolean bitmapShouldUseLargePages) throws Exception {
System.out.println(what + " heapsize " + heapsize + " card table should use large pages " + cardsShouldUseLargePages + " " +
"bitmaps should use large pages " + bitmapShouldUseLargePages);
*** 64,74 ****
// Test with large page enabled.
pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
"-XX:G1HeapRegionSize=" + HEAP_REGION_SIZE,
"-Xms" + heapsize,
"-Xmx" + heapsize,
! "-XX:+TracePageSizes",
"-XX:+UseLargePages",
"-XX:+IgnoreUnrecognizedVMOptions", // there is no ObjectAlignmentInBytes in 32 bit builds
"-XX:ObjectAlignmentInBytes=8",
"-version");
--- 81,91 ----
// Test with large page enabled.
pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
"-XX:G1HeapRegionSize=" + HEAP_REGION_SIZE,
"-Xms" + heapsize,
"-Xmx" + heapsize,
! "-Xlog:pagesizes",
"-XX:+UseLargePages",
"-XX:+IgnoreUnrecognizedVMOptions", // there is no ObjectAlignmentInBytes in 32 bit builds
"-XX:ObjectAlignmentInBytes=8",
"-version");
*** 80,90 ****
// Test with large page disabled.
pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
"-XX:G1HeapRegionSize=" + HEAP_REGION_SIZE,
"-Xms" + heapsize,
"-Xmx" + heapsize,
! "-XX:+TracePageSizes",
"-XX:-UseLargePages",
"-XX:+IgnoreUnrecognizedVMOptions", // there is no ObjectAlignmentInBytes in 32 bit builds
"-XX:ObjectAlignmentInBytes=8",
"-version");
--- 97,107 ----
// Test with large page disabled.
pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
"-XX:G1HeapRegionSize=" + HEAP_REGION_SIZE,
"-Xms" + heapsize,
"-Xmx" + heapsize,
! "-Xlog:pagesizes",
"-XX:-UseLargePages",
"-XX:+IgnoreUnrecognizedVMOptions", // there is no ObjectAlignmentInBytes in 32 bit builds
"-XX:ObjectAlignmentInBytes=8",
"-version");
*** 106,120 ****
private static long lcm(long x, long y) {
return x * (y / gcd(x, y));
}
public static void main(String[] args) throws Exception {
- if (!Platform.isDebugBuild()) {
- System.out.println("Skip tests on non-debug builds because the required option TracePageSizes is a debug-only option.");
- return;
- }
-
// Size that a single card covers.
final int cardSize = 512;
WhiteBox wb = WhiteBox.getWhiteBox();
smallPageSize = wb.getVMPageSize();
largePageSize = wb.getVMLargePageSize();
--- 123,132 ----
*** 157,162 ****
--- 169,194 ----
testVM("case4: only bitmap uses large pages (barely)", heapSizeForBitmapUsingLargePages, false, true);
testVM("case5: only bitmap uses large pages (extra slack)", heapSizeForBitmapUsingLargePages + heapSizeDiffForBitmap, false, true);
testVM("case6: nothing uses large pages (barely not)", heapSizeForBitmapUsingLargePages - heapSizeDiffForBitmap, false, false);
}
+
+ public static long parseMemoryString(String value) {
+ long multiplier = 1;
+
+ if (value.endsWith("B")) {
+ multiplier = 1;
+ } else if (value.endsWith("K")) {
+ multiplier = 1024;
+ } else if (value.endsWith("M")) {
+ multiplier = 1024 * 1024;
+ } else if (value.endsWith("G")) {
+ multiplier = 1024 * 1024 * 1024;
+ } else {
+ throw new IllegalArgumentException("Expected memory string '" + value + "'to end with either of: B, K, M, G");
+ }
+
+ long longValue = Long.parseUnsignedLong(value.substring(0, value.length() - 1));
+
+ return longValue * multiplier;
+ }
}
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