RamUsageTester (Lucene 8.5.1 API)

java.lang.Object
- org.apache.lucene.util.RamUsageTester

```
public final class RamUsageTester
extends Object
```
Crawls object graph to collect RAM usage for testing

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class RamUsageTester.Accumulator
An accumulator of object references.

Constructor Summary

Constructors
Constructor Description

RamUsageTester()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static String`	`humanSizeOf(Object object)`	Return a human-readable size of a given object.
`static long`	`sizeOf(Object obj)`	Same as calling `sizeOf(obj, DEFAULT_FILTER)`.
`static long`	`sizeOf(Object obj, RamUsageTester.Accumulator accumulator)`	Estimates the RAM usage by the given object.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RamUsageTester
```
public RamUsageTester()
```
- Method Detail
  - sizeOf
```
public static long sizeOf(Object obj,
                          RamUsageTester.Accumulator accumulator)
```
    Estimates the RAM usage by the given object. It will walk the object tree and sum up all referenced objects.
    Resource Usage: This method internally uses a set of every object seen during traversals so it does allocate memory (it isn't side-effect free). After the method exits, this memory should be GCed.
  - sizeOf
```
public static long sizeOf(Object obj)
```
    Same as calling sizeOf(obj, DEFAULT_FILTER).
  - humanSizeOf
```
public static String humanSizeOf(Object object)
```
    Return a human-readable size of a given object.
    
    See Also:
    
    sizeOf(Object), RamUsageEstimator.humanReadableUnits(long)