Example usage for java.lang.management BufferPoolMXBean getMemoryUsed

Introduction

In this page you can find the example usage for java.lang.management BufferPoolMXBean getMemoryUsed.

Prototype

long getMemoryUsed();

Source Link

Document

Returns an estimate of the memory that the Java virtual machine is using for this buffer pool.

Usage

From source file:net.centro.rtb.monitoringcenter.metrics.system.jvm.BufferPoolMetricSet.java

BufferPoolMetricSet() {
    this.bufferPoolMXBeans = ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class);

    List<BufferPoolStatus> bufferPoolStatuses = new ArrayList<>();
    Map<String, Metric> metricsByNames = new HashMap<>();

    for (final BufferPoolMXBean bufferPoolMXBean : bufferPoolMXBeans) {
        final String bufferPoolName = bufferPoolMXBean.getName();

        final Gauge<Long> sizeGauge = new Gauge<Long>() {
            @Override//  w  ww . j a va2s  .c om
            public Long getValue() {
                return bufferPoolMXBean.getCount();
            }
        };
        metricsByNames.put(MetricNamingUtil.join(bufferPoolName, "size"), sizeGauge);

        final Gauge<Long> totalCapacityInBytesGauge = new Gauge<Long>() {
            @Override
            public Long getValue() {
                return bufferPoolMXBean.getTotalCapacity();
            }
        };
        metricsByNames.put(MetricNamingUtil.join(bufferPoolName, "totalCapacityInBytes"),
                totalCapacityInBytesGauge);

        final Gauge<Long> usedMemoryInBytesGauge;
        if (bufferPoolMXBean.getMemoryUsed() >= 0) {
            usedMemoryInBytesGauge = new Gauge<Long>() {
                @Override
                public Long getValue() {
                    return bufferPoolMXBean.getMemoryUsed();
                }
            };
            metricsByNames.put(MetricNamingUtil.join(bufferPoolName, "usedMemoryInBytes"),
                    usedMemoryInBytesGauge);
        } else {
            usedMemoryInBytesGauge = null;
        }

        bufferPoolStatuses.add(new BufferPoolStatus() {
            @Override
            public String getName() {
                return bufferPoolName;
            }

            @Override
            public Gauge<Long> getSizeGauge() {
                return sizeGauge;
            }

            @Override
            public Gauge<Long> getTotalCapacityInBytesGauge() {
                return totalCapacityInBytesGauge;
            }

            @Override
            public Gauge<Long> getUsedMemoryInBytesGauge() {
                return usedMemoryInBytesGauge;
            }
        });
    }

    this.bufferPoolStatuses = bufferPoolStatuses;
    this.metricsByNames = metricsByNames;
}

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From source file:org.apache.flink.runtime.metrics.util.MetricUtils.java

private static void instantiateMemoryMetrics(MetricGroup metrics) {
    final MemoryMXBean mxBean = ManagementFactory.getMemoryMXBean();
    MetricGroup heap = metrics.addGroup("Heap");
    heap.gauge("Used", new Gauge<Long>() {
        @Override/*from  w ww.j  a v a2 s  .  com*/
        public Long getValue() {
            return mxBean.getHeapMemoryUsage().getUsed();
        }
    });
    heap.gauge("Committed", new Gauge<Long>() {
        @Override
        public Long getValue() {
            return mxBean.getHeapMemoryUsage().getCommitted();
        }
    });
    heap.gauge("Max", new Gauge<Long>() {
        @Override
        public Long getValue() {
            return mxBean.getHeapMemoryUsage().getMax();
        }
    });

    MetricGroup nonHeap = metrics.addGroup("NonHeap");
    nonHeap.gauge("Used", new Gauge<Long>() {
        @Override
        public Long getValue() {
            return mxBean.getNonHeapMemoryUsage().getUsed();
        }
    });
    nonHeap.gauge("Committed", new Gauge<Long>() {
        @Override
        public Long getValue() {
            return mxBean.getNonHeapMemoryUsage().getCommitted();
        }
    });
    nonHeap.gauge("Max", new Gauge<Long>() {
        @Override
        public Long getValue() {
            return mxBean.getNonHeapMemoryUsage().getMax();
        }
    });

    List<BufferPoolMXBean> bufferMxBeans = ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class);

    for (final BufferPoolMXBean bufferMxBean : bufferMxBeans) {
        MetricGroup bufferGroup = metrics.addGroup(WordUtils.capitalize(bufferMxBean.getName()));
        bufferGroup.gauge("Count", new Gauge<Long>() {
            @Override
            public Long getValue() {
                return bufferMxBean.getCount();
            }
        });
        bufferGroup.gauge("MemoryUsed", new Gauge<Long>() {
            @Override
            public Long getValue() {
                return bufferMxBean.getMemoryUsed();
            }
        });
        bufferGroup.gauge("TotalCapacity", new Gauge<Long>() {
            @Override
            public Long getValue() {
                return bufferMxBean.getTotalCapacity();
            }
        });
    }
}

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From source file:org.apache.pulsar.common.stats.JvmMetrics.java

public static long getJvmDirectMemoryUsed() {
    if (directMemoryUsage != null) {
        try {/*w  w  w  .  jav  a 2s. c  o m*/
            return ((AtomicLong) directMemoryUsage.get(null)).get();
        } catch (Exception e) {
            if (log.isDebugEnabled()) {
                log.debug("Failed to get netty-direct-memory used count {}", e.getMessage());
            }
        }
    }

    List<BufferPoolMXBean> pools = ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class);
    for (BufferPoolMXBean pool : pools) {
        if (pool.getName().equals("direct")) {
            return pool.getMemoryUsed();
        }
    }

    // Couldnt get direct memory usage
    return -1;
}

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From source file:org.apache.tajo.QueryTestCaseBase.java

@Before
public void printTestName() {
    /* protect a travis stalled build */
    BufferPoolMXBean direct = BufferPool.getDirectBufferPool();
    BufferPoolMXBean mapped = BufferPool.getMappedBufferPool();
    System.out.println(/*from ww w.j  ava2  s . c o  m*/
            String.format("Used heap: %s/%s, direct:%s/%s, mapped:%s/%s, Active Threads: %d, Run: %s.%s",
                    FileUtil.humanReadableByteCount(
                            Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory(), false),
                    FileUtil.humanReadableByteCount(Runtime.getRuntime().maxMemory(), false),
                    FileUtil.humanReadableByteCount(direct.getMemoryUsed(), false),
                    FileUtil.humanReadableByteCount(direct.getTotalCapacity(), false),
                    FileUtil.humanReadableByteCount(mapped.getMemoryUsed(), false),
                    FileUtil.humanReadableByteCount(mapped.getTotalCapacity(), false), Thread.activeCount(),
                    getClass().getSimpleName(), name.getMethodName()));
}

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