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. If this number is smaller than total, locking pages failed at some point and key data could be swapped to disk

chunks_used

integer

Number allocated chunks

chunks_free

integer

Number of unused chunks

error

object | null

(Optional) JSON-RPC error when the request failed; omitted or null on success

code

integer

Error code

message

string

Error message

Request

1
curl -X POST "https://docs-demo.btc.quiknode.pro/" \
2
  -H "Content-Type: application/json" \
3
  -d '{
4
  "jsonrpc": "2.0",
5
  "method": "getmemoryinfo",
6
  "params": [],
7
  "id": 1
8
}'

1
curl -X POST "https://docs-demo.btc.quiknode.pro/" \
2
  -H "Content-Type: application/json" \
3
  -d '{
4
  "jsonrpc": "2.0",
5
  "method": "getmemoryinfo",
6
  "params": [],
7
  "id": 1
8
}'

1
const body = {
2
    jsonrpc: '2.0',
3
    method: 'getmemoryinfo',
4
    params: [],
5
    id: 1
6
}
7

8
async function main() {
9
    const response = await fetch('https://docs-demo.btc.quiknode.pro/', {
10
        method: 'POST',
11
        headers: {'Content-Type': 'application/json'},
12
        body: JSON.stringify(body)
13
    })
14
    const data = await response.json()
15
    console.log(data)
16
}
17

18
main()

1
const body = {
2
    jsonrpc: '2.0',
3
    method: 'getmemoryinfo',
4
    params: [],
5
    id: 1
6
}
7

8
async function main() {
9
    const response = await fetch('https://docs-demo.btc.quiknode.pro/', {
10
        method: 'POST',
11
        headers: {'Content-Type': 'application/json'},
12
        body: JSON.stringify(body)
13
    })
14
    const data = await response.json()
15
    console.log(data)
16
}
17

18
main()

1
import requests
2
import json
3

4
url = "https://docs-demo.btc.quiknode.pro/"
5

6
payload = json.dumps({
7
  "jsonrpc": "2.0",
8
  "method": "getmemoryinfo",
9
  "params": [],
10
  "id": 1
11
})
12
headers = {
13
  'Content-Type': 'application/json'
14
}
15

16
response = requests.request("POST", url, headers=headers, data=payload)
17

18
print(response.text)

1
import requests
2
import json
3

4
url = "https://docs-demo.btc.quiknode.pro/"
5

6
payload = json.dumps({
7
  "jsonrpc": "2.0",
8
  "method": "getmemoryinfo",
9
  "params": [],
10
  "id": 1
11
})
12
headers = {
13
  'Content-Type': 'application/json'
14
}
15

16
response = requests.request("POST", url, headers=headers, data=payload)
17

18
print(response.text)

1
require "uri"
2
require "json"
3
require "net/http"
4

5
uri = URI("https://docs-demo.btc.quiknode.pro/")
6

7
payload = {
8
  jsonrpc: "2.0",
9
  id: 1,
10
  method: "getmemoryinfo",
11
  params: []
12
}
13

14
request = Net::HTTP::Post.new(uri)
15
request["Content-Type"] = "application/json"
16
request.body = JSON.generate(payload)
17

18
response = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
19
  http.request(request)
20
end
21

22
puts response.body

1
require "uri"
2
require "json"
3
require "net/http"
4

5
uri = URI("https://docs-demo.btc.quiknode.pro/")
6

7
payload = {
8
  jsonrpc: "2.0",
9
  id: 1,
10
  method: "getmemoryinfo",
11
  params: []
12
}
13

14
request = Net::HTTP::Post.new(uri)
15
request["Content-Type"] = "application/json"
16
request.body = JSON.generate(payload)
17

18
response = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
19
  http.request(request)
20
end
21

22
puts response.body

Response

1
{
2
  "jsonrpc": "2.0",
3
  "result": {
4
    "locked": {
5
      "used": 1760,
6
      "free": 260384,
7
      "total": 262144,
8
      "locked": 262144,
9
      "chunks_used": 45,
10
      "chunks_free": 4
11
    }
12
  },
13
  "id": 1
14
}

1
{
2
  "jsonrpc": "2.0",
3
  "result": {
4
    "locked": {
5
      "used": 1760,
6
      "free": 260384,
7
      "total": 262144,
8
      "locked": 262144,
9
      "chunks_used": 45,
10
      "chunks_free": 4
11
    }
12
  },
13
  "id": 1
14
}

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