# Speed Control for Deleting Large Amount of Data

+ Configurations related to the speed of compaction
  + **`max-compaction-bytes`**
    + The maximum number of bytes written into disk per compaction
  + **`soft-pending-compaction-bytes-limit`**
  + **`hard-pending-compaction-bytes-limit`**

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`max-compaction-bytes`: `https://docs.pingcap.com/tidb/stable/tikv-configuration-file#max-compaction-bytes`

`soft-pending-compaction-bytes-limit`: `https://docs.pingcap.com/tidb/stable/tikv-configuration-file#soft-pending-compaction-bytes-limit`

`hard-pending-compaction-bytes-limit`: `https://docs.pingcap.com/tidb/stable/tikv-configuration-file#hard-pending-compaction-bytes-limit`