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getmemoryinfo RPC Method

Returns an object that contains information regarding memory usage.

Updated on
Feb 04, 2026

Parameters

mode
string

It determines what kind of information is returned. "stats" returns general statistics about memory usage in the daemon and "mallocinfo" returns an XML string describing low-level heap state (only available if compiled with glibc 2.10+)

Returns

result
object

Memory usage information for the node

locked
object

Information about locked memory manager

used
integer

Number of bytes used

free
integer

Number of bytes available in current arenas

total
integer

Total number of bytes managed

locked
integer

Amount of bytes that succeeded locking in the locked memory manager

chunks_used
integer

Number allocated chunks

chunks_free
integer

Number of unused chunks

error
object | null

JSON-RPC error object when the request failed, or null on success

id
integer

The JSON-RPC request identifier

Request
Response
1
{
2
"result": {
3
"locked": {
4
"used": 64128,
5
"free": 1408,
6
"total": 65536,
7
"locked": 65536,
8
"chunks_used": 2002,
9
"chunks_free": 2
10
}
11
},
12
"error": null,
13
"id": 1
14
}
1
{
2
"result": {
3
"locked": {
4
"used": 64128,
5
"free": 1408,
6
"total": 65536,
7
"locked": 65536,
8
"chunks_used": 2002,
9
"chunks_free": 2
10
}
11
},
12
"error": null,
13
"id": 1
14
}
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