eth_feeHistory blob gas used ratio error

[sebaespindola]

System information

Geth version: 1.15.2
CL client & version: Teku
OS & Version: Linux

There seems to be a bug in the eth_feeHistory method. The blob gas used ratio is no longer a coefficient:

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "oldestBlock": "0x76ac95",
    "baseFeePerGas": [
      "0x17a2450f4",
      "0x16be16dff",
      "0x168412aff",
      "0x16cd1cde6",
      "0x157794815"
    ],
    "gasUsedRatio": [
      0.34914364543796966,
      0.4601405237392908,
      0.5506862222222222,
      0.26595780555555554
    ],
    "baseFeePerBlobGas": [
      "0x26609f9",
      "0x27ea052",
      "0x27ea052",
      "0x2ce745d",
      "0x30924a1"
    ],
    "blobGasUsedRatio": [
      87381.33333333333,
      65536,
      131072,
      109226.66666666667
    ]
  }
}

The regression seems to have been created here

[jamesstanleystewart]

@fjl Would this regression fix warrant being included in a 1.15.4 release? Ideally we'd love to be able to release this fix before pectra hits sepolia so we don't have the known issue with serving feeHistory rpc requests.

[fjl]

Yes, 1.15.4 will be released soon!