if [31mCONFIG_BLOCK[0m menu "IO Schedulers" config [31mCONFIG_IOSCHED_NOOP[0m bool default y ---help--- The no-op I/O scheduler is a minimal scheduler that does basic merging and sorting. Its main uses include non-disk based block devices like memory devices, and specialised software or hardware environments that do their own scheduling and require only minimal assistance from the kernel. config [31mCONFIG_IOSCHED_DEADLINE[0m tristate "Deadline I/O scheduler" default y ---help--- 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. config [31mCONFIG_IOSCHED_CFQ[0m tristate "CFQ I/O scheduler" default y ---help--- The CFQ I/O scheduler tries to distribute bandwidth equally among all processes in the system. It should provide a fair and low latency working environment, suitable for both desktop and server systems. This is the default I/O scheduler. config [31mCONFIG_CFQ_GROUP_IOSCHED[0m bool "CFQ Group Scheduling support" depends on [31mCONFIG_IOSCHED_CFQ[0m && [31mCONFIG_BLK_CGROUP[0m default n ---help--- Enable group IO scheduling in CFQ. choice prompt "Default I/O scheduler" default [31mCONFIG_DEFAULT_CFQ[0m help Select the I/O scheduler which will be used by default for all block devices. config [31mCONFIG_DEFAULT_DEADLINE[0m bool "Deadline" if [31mCONFIG_IOSCHED_DEADLINE[0m=y config [31mCONFIG_DEFAULT_CFQ[0m bool "CFQ" if [31mCONFIG_IOSCHED_CFQ[0m=y config [31mCONFIG_DEFAULT_NOOP[0m bool "No-op" endchoice config [31mCONFIG_DEFAULT_IOSCHED[0m string default "deadline" if [31mCONFIG_DEFAULT_DEADLINE[0m default "cfq" if [31mCONFIG_DEFAULT_CFQ[0m default "noop" if [31mCONFIG_DEFAULT_NOOP[0m endmenu endif |