getRecentPerformanceSamples RPC Method

Returns a list of recent performance samples, in reverse slot order. Performance samples are taken every 60 seconds and include the number of transactions and slots that occur in a given time window.

Parameters

limit usize optional

number of samples to return (maximum 720)

Result

An array of RpcPerfSample<object> with the following fields:

slot: <u64> - Slot in which sample was taken at
numTransactions: <u64> - Number of transactions processed during the sample period
numSlots: <u64> - Number of slots completed during the sample period
samplePeriodSecs: <u16> - Number of seconds in a sample window
numNonVoteTransactions: <u64> - Number of non-vote transactions processed during the sample period.

numNonVoteTransactions is present starting with v1.15. To get a number of voting transactions compute:

numTransactions - numNonVoteTransactions

Code sample

curl https://api.devnet.solana.com -s -X POST -H "Content-Type: application/json" -d '
  {
    "jsonrpc":"2.0", "id":1,
    "method": "getRecentPerformanceSamples",
    "params": [4]
  }
'

Response

{
  "jsonrpc": "2.0",
  "result": [
    {
      "numSlots": 126,
      "numTransactions": 126,
      "numNonVoteTransactions": 1,
      "samplePeriodSecs": 60,
      "slot": 348125
    },
    {
      "numSlots": 126,
      "numTransactions": 126,
      "numNonVoteTransactions": 1,
      "samplePeriodSecs": 60,
      "slot": 347999
    },
    {
      "numSlots": 125,
      "numTransactions": 125,
      "numNonVoteTransactions": 0,
      "samplePeriodSecs": 60,
      "slot": 347873
    },
    {
      "numSlots": 125,
      "numTransactions": 125,
      "numNonVoteTransactions": 0,
      "samplePeriodSecs": 60,
      "slot": 347748
    }
  ],
  "id": 1
}