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CONFIG_IOSCHED_DEADLINE: Deadline I/O scheduler

General informations

The Linux kernel configuration item CONFIG_IOSCHED_DEADLINE has multiple definitions:

Deadline I/O scheduler found in block/Kconfig.iosched

The configuration item CONFIG_IOSCHED_DEADLINE:

Help text

The deadline I/O scheduler is simple and compact. It will provide CSCAN service with FIFO expiration of requests, switching to a new point in the service tree and doing a batch of IO from there in case of expiry.

Deadline I/O scheduler found in drivers/block/Kconfig.iosched

The configuration item CONFIG_IOSCHED_DEADLINE:

Help text

The deadline I/O scheduler is simple and compact, and is often as good as the anticipatory I/O scheduler, and in some database workloads, better. In the case of a single process performing I/O to a disk at any one time, its behaviour is almost identical to the anticipatory I/O scheduler and so is a good choice.

Deadline I/O scheduler found in drivers/block/Kconfig.iosched

The configuration item CONFIG_IOSCHED_DEADLINE:

Help text

The deadline I/O scheduler is simple and compact, and is often as good as the anticipatory I/O scheduler, and in some database workloads, better. In the case of a single process performing I/O to a disk at any one time, its behaviour is almost identical to the anticipatory I/O scheduler and so is a good choice.

Hardware

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