)]}'
{
  "commit": "49426578ff8f9e16d8649e22bebec7c79da0a33c",
  "tree": "6d5e6563246da23f1b82d84d3e6deb65d20c4766",
  "parents": [
    "0ff8c4882c6fc09d56f41d9946b28c9a0ef5f19e"
  ],
  "author": {
    "name": "QUICHE team",
    "email": "quiche-dev@google.com",
    "time": "Wed Sep 30 10:54:44 2026 -0700"
  },
  "committer": {
    "name": "Copybara-Service",
    "email": "copybara-worker@google.com",
    "time": "Wed Sep 30 10:55:56 2026 -0700"
  },
  "message": "Reorder fields in `PragueSender` to reduce its size from 360B to 352B (go/memory-cy).\n\nAs part of go/memory-cy, this CL reorders the fields of `quic::PragueSender` to reduce its size from 360B to 352B. For single allocations, this drops the TCMalloc size class from 448B to 352B, saving ~229.3 GiB of fleet RAM.\n\nTo ensure no GCU regressions, we checked field-level `heapaccessz_all_loads` profiles and confirmed that hot fields are not split or displaced across 64-byte cache lines. We will also monitor for any GCU regressions with `gwp-cl-impact`.\n\nEDIT_CATEGORY: CATEGORY_TYPE_FIELD_REORDERING\nFULLY_QUALIFIED_TYPE_NAME: quic::PragueSender\n#gwp-cl-impact\n\nTested:\n    Local presubmit tests failed.\n    Some test failures are present; the CL author decided to mail\nPiperOrigin-RevId: 991090772\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "c4e617414fe5f804eb5a81793973dda57032717f",
      "old_mode": 33188,
      "old_path": "quiche/quic/core/congestion_control/prague_sender.h",
      "new_id": "f82c9233f5049f10244e795410bba4264d297155",
      "new_mode": 33188,
      "new_path": "quiche/quic/core/congestion_control/prague_sender.h"
    }
  ]
}