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sys-kernel: enable BFQ I/O scheduler

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BFQ is a proportional-share storage-I/O scheduler for the
blk-mq layer. Its main features are:

 * Low latency for interactive applications
 * Low latency for soft real-time applications
 * Higher speed for code-development tasks
 * High throughput
 * Strong fairness, bandwidth and delay guarantees

Note that the default blk-mq scheduler is "None", so
th BFQ scheduler must be explicitly chosen for a given
storage device.

Note also that BFQ only supports blk-mq layer, so drivers
using legacy blk layer are not affected by this change.

In particular, both HDD and SSD storage drives use
the legacy blk layer by default.

Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
This commit is contained in:
Ezequiel Garcia 2017-12-29 16:49:21 -03:00
parent 56f138af4a
commit cbe1d6973d
6 changed files with 4 additions and 0 deletions
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sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-4.14.18-r1.ebuild → sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-4.14.18-r2.ebuild vendored
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sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-4.15.2-r1.ebuild → sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-4.15.2-r2.ebuild vendored
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sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/coreos-modules-4.14.18-r1.ebuild → sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/coreos-modules-4.14.18-r2.ebuild vendored
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sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/coreos-modules-4.15.2-r1.ebuild → sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/coreos-modules-4.15.2-r2.ebuild vendored
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sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-4.14 vendored
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@ -54,6 +54,8 @@ CONFIG_MINIX_SUBPARTITION=y
CONFIG_SOLARIS_X86_PARTITION=y CONFIG_SOLARIS_X86_PARTITION=y
CONFIG_UNIXWARE_DISKLABEL=y CONFIG_UNIXWARE_DISKLABEL=y
CONFIG_CFQ_GROUP_IOSCHED=y CONFIG_CFQ_GROUP_IOSCHED=y
CONFIG_IOSCHED_BFQ=y
CONFIG_BFQ_GROUP_IOSCHED=y
CONFIG_PCIEPORTBUS=y CONFIG_PCIEPORTBUS=y
CONFIG_HOTPLUG_PCI_PCIE=y CONFIG_HOTPLUG_PCI_PCIE=y
CONFIG_PCIE_ECRC=y CONFIG_PCIE_ECRC=y

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sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-4.15 vendored
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@ -54,6 +54,8 @@ CONFIG_MINIX_SUBPARTITION=y
CONFIG_SOLARIS_X86_PARTITION=y CONFIG_SOLARIS_X86_PARTITION=y
CONFIG_UNIXWARE_DISKLABEL=y CONFIG_UNIXWARE_DISKLABEL=y
CONFIG_CFQ_GROUP_IOSCHED=y CONFIG_CFQ_GROUP_IOSCHED=y
CONFIG_IOSCHED_BFQ=y
CONFIG_BFQ_GROUP_IOSCHED=y
CONFIG_PCIEPORTBUS=y CONFIG_PCIEPORTBUS=y
CONFIG_HOTPLUG_PCI_PCIE=y CONFIG_HOTPLUG_PCI_PCIE=y
CONFIG_PCIE_ECRC=y CONFIG_PCIE_ECRC=y