| Type: | integer |
| Default: | 16 (128kB) |
| Min: | 1 (8kB) |
| Max: | 32 (256kB) |
| Unit: | 8kB |
| Context: | user |
| Restart: | false |
| Since: | 17 |
Controls the largest I/O size in operations that combine I/O. The default is 128kB.