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Add two internal session variable info: InPacketBytes, OutPacketBytes #22508

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Merged
ti-chi-bot merged 5 commits into from
Apr 13, 2026
Merged

Add two internal session variable info: InPacketBytes, OutPacketBytes #22508

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4b0e4a3
Add two internal session variables info
yibin87 Feb 27, 2026
f73ea23
Little update
yibin87 Feb 27, 2026
03304bc
Merge remote-tracking branch 'upstream/master' into pr/22508
hfxsd Feb 27, 2026
af9ff20
Update system-variables.md
qiancai Mar 30, 2026
3863cbe
docs: place InPacketBytes and OutPacketBytes alphabetically
qiancai Mar 30, 2026
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8 changes: 8 additions & 0 deletions system-variables.md
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Expand Up @@ -590,6 +590,10 @@ This variable is an alias for [`last_insert_id`](#last_insert_id).
- Unit: Seconds
- The lock wait timeout for pessimistic transactions (default).

### InPacketBytes <span class="version-mark">New in v8.5.6 and v9.0.0</span>

- This variable is used only for internal statistics and is not visible to users.

### interactive_timeout

> **Note:**
Expand Down Expand Up @@ -671,6 +675,10 @@ This variable is an alias for [`last_insert_id`](#last_insert_id).
- The default value `0` means there is no limit for user connections. When the value is greater than `0` and the number of user connections reaches this value, the TiDB server will reject the user's new connection.
- If the value of this variable exceeds [`max_connections`](https://docs.pingcap.com/tidb/stable/tidb-configuration-file#max_connections), TiDB uses `max_connections` to limit the maximum number of connections a single user can establish. For example, if `max_user_connections` of a user is set to `2000`, but `max_connections` is `1000`, the user can actually establish up to `1000` connections to a TiDB server instance.

### OutPacketBytes <span class="version-mark">New in v8.5.6 and v9.0.0</span>

- This variable is used only for internal statistics and is not visible to users.

### password_history <span class="version-mark">New in v6.5.0</span>

- Scope: GLOBAL
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