f550b7e6c2
Move content from stx-utils into stx-integ or stx-update
Packages will be relocated to
stx-update:
enable-dev-patch
extras
stx-integ:
config-files/
io-scheduler
filesystem/
filesystem-scripts
grub/
grubby
logging/
logmgmt
tools/
collector
monitor-tools
tools/engtools/
hostdata-collectors
parsers
utilities/
build-info
branding (formerly wrs-branding)
platform-util
Change-Id: Id6b1984eb421278610709eea54e055de5269bf18
Story: 2002801
Task: 22687
Signed-off-by: Scott Little <scott.little@windriver.com>
29 lines
1.4 KiB
Plaintext
29 lines
1.4 KiB
Plaintext
# This file contains the rules to customize io scheduler.
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# Heuristics:
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# 'deadline' io-scheduler tuned settings
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# - deadline generally recommended for databases, servers, and SSDs,
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# and for more deterministic latency
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# - note that read_expire is a key tuning parameter here
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# - the following is recommended by DRBD user guide
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# front_merges: 0 (from 1)
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# read_expire: 150 (from 500)
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# write_expire: 1500 (from 5000)
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#
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# 'noop' io scheduler for variants of HW-RAID.
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# - RAID controller will do its own separate scheduling
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#
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# Overall:
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# - We prefer to guarantee latency more than fairness for all platform services,
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# especially under extreme read and write load, e.g, when creating/deleting
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# multiple heat stacks, or running disk intensive operations.
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ACTION=="add|change", SUBSYSTEM=="block", KERNEL=="sd[a-z]", ATTR{queue/scheduler}="deadline"
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ACTION=="add|change", SUBSYSTEM=="block", KERNEL=="sd[a-z]", ATTR{queue/iosched/front_merges}="0"
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ACTION=="add|change", SUBSYSTEM=="block", KERNEL=="sd[a-z]", ATTR{queue/iosched/read_expire}="150"
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ACTION=="add|change", SUBSYSTEM=="block", KERNEL=="sd[a-z]", ATTR{queue/iosched/write_expire}="1500"
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# Set noop io scheduler for variants of HW-RAID.
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# HP ProLiant DL360p Gen8; HP ProLiant DL380p Gen8
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ACTION=="add|change", SUBSYSTEM=="block", KERNEL=="sd[a-z]", ATTRS{raid_level}=="*RAID*", ATTR{queue/scheduler}="noop"
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