---
title: "Changes to Fetch runtime memory stats"
method: POST
path: "/core/memstats"
---

# Changes to Fetch runtime memory stats

`POST /core/memstats`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 9 of 30 revisions.

- **2026-10-31** `9abe65975575`: 1 info
- **2026-10-31** `1d0b982bbbff`: 21 info
- **2026-10-31** `5342b87535b9`: 3 warning, 2 info
- **2026-08-19** `adc0c129da4f`: 1 info
- **2026-08-19** `86429c26cace`: 1 breaking
- **2026-08-19** `842fb2d927ae`: 1 info
- **2026-06-05** `2849bf2803ce`: 2 info
- **2026-04-11** `809edee23ac4`: 1 info
- **2025-12-06** `30e239e76ba1`: 6 breaking, 1 warning

## Changes

- **2026-10-31** `9abe65975575`: 1 info
  - api tag `core` added
- **2026-10-31** `1d0b982bbbff`: 21 info
  - added the non-success response with the status `401`
  - added the required property `Alloc` to the response with the `200` status
  - added the required property `BuckHashSys` to the response with the `200` status
  - added the required property `Frees` to the response with the `200` status
  - added the required property `GCSys` to the response with the `200` status
  - added the required property `HeapAlloc` to the response with the `200` status
  - added the required property `HeapIdle` to the response with the `200` status
  - added the required property `HeapInuse` to the response with the `200` status
  - added the required property `HeapObjects` to the response with the `200` status
  - added the required property `HeapReleased` to the response with the `200` status
  - added the required property `HeapSys` to the response with the `200` status
  - added the required property `MCacheInuse` to the response with the `200` status
  - added the required property `MCacheSys` to the response with the `200` status
  - added the required property `MSpanInuse` to the response with the `200` status
  - added the required property `MSpanSys` to the response with the `200` status
  - added the required property `Mallocs` to the response with the `200` status
  - added the required property `OtherSys` to the response with the `200` status
  - added the required property `StackInuse` to the response with the `200` status
  - added the required property `StackSys` to the response with the `200` status
  - added the required property `Sys` to the response with the `200` status
  - added the required property `TotalAlloc` to the response with the `200` status
- **2026-10-31** `5342b87535b9`: 3 warning, 2 info
  - deleted the `query` request parameter `_async`
  - deleted the `query` request parameter `_group`
  - removed the request property `_async`
  - added the new optional request property `_config`
  - added the new optional request property `_filter`
- **2026-08-19** `adc0c129da4f`: 1 info
  - added the required property `executeId` to the response with the `202` status
- **2026-08-19** `86429c26cace`: 1 breaking
  - removed the required property `executeId` from the response with the `202` status
- **2026-08-19** `842fb2d927ae`: 1 info
  - added the required property `executeId` to the response with the `202` status
- **2026-06-05** `2849bf2803ce`: 2 info
  - added the new optional `header` request parameter `Prefer`
  - added the success response with the status `202`
- **2026-04-11** `809edee23ac4`: 1 info
  - added optional request body
- **2025-12-06** `30e239e76ba1`: 6 breaking, 1 warning
  - removed the request body
  - the response property `input` became nullable for the status `4XX`
  - the response property `input` became nullable for the status `5XX`
  - the response property `input/additionalProperties/` became nullable for the status `4XX`
  - the response property `input/additionalProperties/` became nullable for the status `5XX`
  - removed the success response with the status `202`
  - deleted the `header` request parameter `Prefer`

---

[Operation](https://skmtc.dev/rclone/apis/rclone-rc-api/docs/core/memstats/post.md) - [API](https://skmtc.dev/rclone/apis/rclone-rc-api.md) - [Page](https://skmtc.dev/rclone/apis/rclone-rc-api/changes/core/memstats/post)