block/Kconfig.iosched

   1 # SPDX-License-Identifier: GPL-2.0
   2 menu "IO Schedulers"
   3
   4 config MQ_IOSCHED_DEADLINE
   5         tristate "MQ deadline I/O scheduler"
   6         default y
   7         help
   8           MQ version of the deadline IO scheduler.
   9
  10 config MQ_IOSCHED_KYBER
  11         tristate "Kyber I/O scheduler"
  12         default y
  13         help
  14           The Kyber I/O scheduler is a low-overhead scheduler suitable for
  15           multiqueue and other fast devices. Given target latencies for reads and
  16           synchronous writes, it will self-tune queue depths to achieve that
  17           goal.
  18
  19 config IOSCHED_BFQ
  20         tristate "BFQ I/O scheduler"
  21         select BLK_ICQ
  22         help
  23         BFQ I/O scheduler for BLK-MQ. BFQ distributes the bandwidth of
  24         of the device among all processes according to their weights,
  25         regardless of the device parameters and with any workload. It
  26         also guarantees a low latency to interactive and soft
  27         real-time applications.  Details in
  28         Documentation/block/bfq-iosched.rst
  29
  30 config BFQ_GROUP_IOSCHED
  31        bool "BFQ hierarchical scheduling support"
  32        depends on IOSCHED_BFQ && BLK_CGROUP
  33        default y
  34        select BLK_CGROUP_RWSTAT
  35         help
  36
  37        Enable hierarchical scheduling in BFQ, using the blkio
  38        (cgroups-v1) or io (cgroups-v2) controller.
  39
  40 config BFQ_CGROUP_DEBUG
  41         bool "BFQ IO controller debugging"
  42         depends on BFQ_GROUP_IOSCHED
  43         help
  44         Enable some debugging help. Currently it exports additional stat
  45         files in a cgroup which can be useful for debugging.
  46
  47 endmenu