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CONFIG_IOSCHED_AS: Anticipatory I/O scheduler
General informations
The Linux kernel configuration item CONFIG_IOSCHED_AS has multiple definitions:
Anticipatory I/O scheduler found in block/Kconfig.iosched
The configuration item CONFIG_IOSCHED_AS:
- prompt: Anticipatory I/O scheduler
- type: tristate
- depends on:
(none) - defined in block/Kconfig.iosched
- found in Linux kernels: 2.6.15–2.6.32
- modules built:
as-iosched,as-iosched
Help text
The anticipatory I/O scheduler is generally a good choice for most environments, but is quite large and complex when compared to the deadline I/O scheduler, it can also be slower in some cases especially some database loads.
Anticipatory I/O scheduler found in drivers/block/Kconfig.iosched
The configuration item CONFIG_IOSCHED_AS:
- prompt: Anticipatory I/O scheduler
- type: bool
- depends on:
CONFIG_EMBEDDED - defined in drivers/block/Kconfig.iosched
- found in Linux kernels: 2.6.0–2.6.9
- modules built:
as-iosched,as-iosched
Help text
The anticipatory I/O scheduler is the default disk scheduler. It is generally a good choice for most environments, but is quite large and complex when compared to the deadline I/O scheduler, it can also be slower in some cases especially some database loads.
Anticipatory I/O scheduler found in drivers/block/Kconfig.iosched
The configuration item CONFIG_IOSCHED_AS:
- prompt: Anticipatory I/O scheduler
- type: tristate
- depends on:
(none) - defined in drivers/block/Kconfig.iosched
- found in Linux kernels: 2.6.10–2.6.14
- modules built:
as-iosched,as-iosched
Help text
The anticipatory I/O scheduler is the default disk scheduler. It is generally a good choice for most environments, but is quite large and complex when compared to the deadline I/O scheduler, it can also be slower in some cases especially some database loads.
Hardware
LKDDb
Raw data from LKDDb:
lkddb module as-iosched CONFIG_IOSCHED_AS : block/Kconfig.iosched : "Anticipatory I/O scheduler"lkddb module as-iosched CONFIG_IOSCHED_AS : drivers/block/Kconfig.iosched : "Anticipatory I/O scheduler"
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