gettxoutsetinfo giving two different disksize #14921

I got surprised to see that the disk size of the txoutsetinfo on two different machine is different, is it normal?

Node1:

{
  "height": 553392,
  "bestblock": "000000000000000000296776e029f7f080f7fb5a6add661fa2833dee72e3ab5f",
  "transactions": 26313045,
  "txouts": 50178355,
  "bogosize": 3782162613,
  "hash_serialized_2": "a086c7291271916e2959d6efc107d5ea896df03d3f78ac83223c23d2909b8317",
  "disk_size": 2946125043,
  "total_amount": 17417229.82774740
}

Node2:

{
  "height": 553392,
  "bestblock": "000000000000000000296776e029f7f080f7fb5a6add661fa2833dee72e3ab5f",
  "transactions": 26313045,
  "txouts": 50178355,
  "bogosize": 3782162613,
  "hash_serialized_2": "a086c7291271916e2959d6efc107d5ea896df03d3f78ac83223c23d2909b8317",
  "disk_size": 3048699532,
  "total_amount": 17417229.82774740
}

Internally this calls leveldb GetApproximateSizes, and from https://stackoverflow.com/a/19614759 looks like it doesn't account memory only keys.

Yes, it depends on various factors like exactly when flushes happened, when LevelDB decides to compact the database, configuration settings like dbcache.

If you want a consistent number for size, look at the bogosize field (which has a well-defined meaning in function of the sizes of keys and values in the database, and is independent from actual disk usage).

Thanks