gistfile1.txt

[clever@amd-nixos:~/apps/nix]$ nix-build -A build.x86_64-linux release.nix && NIX_SHOW_STATS=json ./result/bin/nix-instantiate --eval -E '5*5'
25
evaluation statistics:
{
  "cpuTime": 0.030959,
  "envs": {
    "number": 0,
    "bytes": 0
  },
  "list": {
    "elements": 5,
    "bytes": 40,
    "concats": 0
  },
  "values": {
    "number": 119,
    "bytes": 2856
  },
  "symbols": {
    "number": 217,
    "bytes": 2056
  },
  "sets": {
    "number": 6,
    "bytes": 3360
  },
  "sizes": {
    "Env": 16,
    "Value": 24,
    "Bindings": 8,
    "Attr": 24
  },
  "nrOpUpdates": 0,
  "nrOpUpdateValuesCopied": 0,
  "nrThunks": 0,
  "nrAvoided": 2,
  "nrLookups": 0,
  "nrPrimOpCalls": 1,
  "nrFunctionCalls": 0,
  "gc": {
    "heapSize": 402718720,
    "totalBytes": 9520
  }
}