These settings are available in system.settings and are autogenerated from the ClickHouse snapshot.
temporary_files_buffer_size
Size of the buffer for temporary files writers. Larger buffer size means less system calls, but more memory consumption. A value above 1 GiB is reduced to 1 GiB.
temporary_files_codec
Sets compression codec for temporary files used in sorting and joining operations on disk.
Possible values:
- LZ4 — LZ4 compression is applied.
- NONE — No compression is applied.