public virtual void TestSimpleByteArrays()
{
MemoryMXBean memoryMXBean = ManagementFactory.MemoryMXBean;
object[][] all = new object[0][];
try
{
while (true)
{
// Check the current memory consumption and provide the estimate.
CauseGc();
MemoryUsage mu = memoryMXBean.HeapMemoryUsage;
long estimated = ShallowSizeOf(all);
if (estimated > 50 * RamUsageEstimator.ONE_MB)
{
break;
}
Console.WriteLine(string.format(Locale.ROOT, "%10s\t%10s\t%10s", RamUsageEstimator.humanReadableUnits(mu.Used), RamUsageEstimator.humanReadableUnits(mu.Max), RamUsageEstimator.humanReadableUnits(estimated)));
// Make another batch of objects.
object[] seg = new object[10000];
all = Arrays.copyOf(all, all.Length + 1);
all[all.Length - 1] = seg;
for (int i = 0; i < seg.Length; i++)
{
seg[i] = new sbyte[Random().Next(7)];
}
}
}
catch (System.OutOfMemoryException e)
{
// Release and quit.
}
}
public virtual void TestChainedEstimation()
{
MemoryMXBean memoryMXBean = ManagementFactory.MemoryMXBean;
Random rnd = Random();
Entry first = new Entry();
try
{
while (true)
{
// Check the current memory consumption and provide the estimate.
long jvmUsed = memoryMXBean.HeapMemoryUsage.Used;
long estimated = RamUsageEstimator.sizeOf(first);
Console.WriteLine(string.format(Locale.ROOT, "%10d, %10d", jvmUsed, estimated));
// Make a batch of objects.
for (int i = 0; i < 5000; i++)
{
first.CreateNext(new sbyte[rnd.Next(1024)]);
}
}
}
catch (System.OutOfMemoryException e)
{
// Release and quit.
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public long estimatedSize(org.neo4j.diagnostics.DiagnosticsReporterProgress progress) throws java.io.IOException
public long estimatedSize(DiagnosticsReporterProgress progress)
{
MemoryMXBean bean = ManagementFactory.getPlatformMXBean(_outerInstance.mBeanServer, typeof(MemoryMXBean));
long totalMemory = bean.HeapMemoryUsage.Committed + bean.NonHeapMemoryUsage.Committed;
// We first write raw to disk then write to archive, 5x compression is a reasonable worst case estimation
return(( long )(totalMemory * 1.2));
}
private void DoMemoryUpdates()
{
MemoryMXBean memoryMXBean = ManagementFactory.GetMemoryMXBean();
MemoryUsage memNonHeap = memoryMXBean.GetNonHeapMemoryUsage();
MemoryUsage memHeap = memoryMXBean.GetHeapMemoryUsage();
Runtime runtime = Runtime.GetRuntime();
metrics.SetMetric("memNonHeapUsedM", memNonHeap.GetUsed() / M);
metrics.SetMetric("memNonHeapCommittedM", memNonHeap.GetCommitted() / M);
metrics.SetMetric("memHeapUsedM", memHeap.GetUsed() / M);
metrics.SetMetric("memHeapCommittedM", memHeap.GetCommitted() / M);
metrics.SetMetric("maxMemoryM", runtime.MaxMemory() / M);
}
public virtual void TestLargeSetOfByteArrays()
{
MemoryMXBean memoryMXBean = ManagementFactory.MemoryMXBean;
CauseGc();
long before = memoryMXBean.HeapMemoryUsage.Used;
object[] all = new object[1000000];
for (int i = 0; i < all.Length; i++)
{
all[i] = new sbyte[Random().Next(3)];
}
CauseGc();
long after = memoryMXBean.HeapMemoryUsage.Used;
Console.WriteLine("mx: " + RamUsageEstimator.humanReadableUnits(after - before));
Console.WriteLine("rue: " + RamUsageEstimator.humanReadableUnits(ShallowSizeOf(all)));
Guard = all;
}
