diff options
Diffstat (limited to 'Documentation/admin-guide/device-mapper/dm-crypt.rst')
| -rw-r--r-- | Documentation/admin-guide/device-mapper/dm-crypt.rst | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Documentation/admin-guide/device-mapper/dm-crypt.rst b/Documentation/admin-guide/device-mapper/dm-crypt.rst index 552c9155165d..48a48bd09372 100644 --- a/Documentation/admin-guide/device-mapper/dm-crypt.rst +++ b/Documentation/admin-guide/device-mapper/dm-crypt.rst @@ -162,13 +162,18 @@ iv_large_sectors Module parameters:: - max_read_size + Maximum size of read requests. When a request larger than this size + is received, dm-crypt will split the request. The splitting improves + concurrency (the split requests could be encrypted in parallel by multiple + cores), but it also causes overhead. The user should tune this parameters to + fit the actual workload. + max_write_size - Maximum size of read or write requests. When a request larger than this size + Maximum size of write requests. When a request larger than this size is received, dm-crypt will split the request. The splitting improves concurrency (the split requests could be encrypted in parallel by multiple - cores), but it also causes overhead. The user should tune these parameters to + cores), but it also causes overhead. The user should tune this parameters to fit the actual workload. |