tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1
2menu "IO Schedulers"
3
4config IOSCHED_NOOP
5 bool
6 default y
7 ---help---
8 The no-op I/O scheduler is a minimal scheduler that does basic merging
9 and sorting. Its main uses include non-disk based block devices like
10 memory devices, and specialised software or hardware environments
11 that do their own scheduling and require only minimal assistance from
12 the kernel.
13
14config IOSCHED_AS
15 tristate "Anticipatory I/O scheduler"
16 default y
17 ---help---
18 The anticipatory I/O scheduler is the default disk scheduler. It is
19 generally a good choice for most environments, but is quite large and
20 complex when compared to the deadline I/O scheduler, it can also be
21 slower in some cases especially some database loads.
22
23config IOSCHED_DEADLINE
24 tristate "Deadline I/O scheduler"
25 default y
26 ---help---
27 The deadline I/O scheduler is simple and compact, and is often as
28 good as the anticipatory I/O scheduler, and in some database
29 workloads, better. In the case of a single process performing I/O to
30 a disk at any one time, its behaviour is almost identical to the
31 anticipatory I/O scheduler and so is a good choice.
32
33config IOSCHED_CFQ
34 tristate "CFQ I/O scheduler"
35 default y
36 ---help---
37 The CFQ I/O scheduler tries to distribute bandwidth equally
38 among all processes in the system. It should provide a fair
39 working environment, suitable for desktop systems.
40
41endmenu