49 lines
2.0 KiB
Java
49 lines
2.0 KiB
Java
package net.minecraft.util.profiling.jfr.stats;
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import java.time.Duration;
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import java.time.Instant;
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import java.util.List;
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import java.util.Map;
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import java.util.stream.Collectors;
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import jdk.jfr.consumer.RecordedEvent;
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public record GcHeapStat(Instant timestamp, long heapUsed, GcHeapStat.Timing timing) {
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public static GcHeapStat from(RecordedEvent p_185698_) {
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return new GcHeapStat(
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p_185698_.getStartTime(),
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p_185698_.getLong("heapUsed"),
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p_185698_.getString("when").equalsIgnoreCase("before gc") ? GcHeapStat.Timing.BEFORE_GC : GcHeapStat.Timing.AFTER_GC
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);
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}
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public static GcHeapStat.Summary summary(Duration p_185691_, List<GcHeapStat> p_185692_, Duration p_185693_, int p_185694_) {
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return new GcHeapStat.Summary(p_185691_, p_185693_, p_185694_, calculateAllocationRatePerSecond(p_185692_));
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}
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private static double calculateAllocationRatePerSecond(List<GcHeapStat> p_185696_) {
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long i = 0L;
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Map<GcHeapStat.Timing, List<GcHeapStat>> map = p_185696_.stream().collect(Collectors.groupingBy(p_185689_ -> p_185689_.timing));
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List<GcHeapStat> list = map.get(GcHeapStat.Timing.BEFORE_GC);
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List<GcHeapStat> list1 = map.get(GcHeapStat.Timing.AFTER_GC);
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for (int j = 1; j < list.size(); j++) {
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GcHeapStat gcheapstat = list.get(j);
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GcHeapStat gcheapstat1 = list1.get(j - 1);
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i += gcheapstat.heapUsed - gcheapstat1.heapUsed;
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}
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Duration duration = Duration.between(p_185696_.get(1).timestamp, p_185696_.get(p_185696_.size() - 1).timestamp);
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return (double)i / duration.getSeconds();
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}
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public record Summary(Duration duration, Duration gcTotalDuration, int totalGCs, double allocationRateBytesPerSecond) {
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public float gcOverHead() {
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return (float)this.gcTotalDuration.toMillis() / (float)this.duration.toMillis();
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}
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}
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static enum Timing {
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BEFORE_GC,
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AFTER_GC;
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}
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} |