Public bug reported:
Config options below are useful for Realtime users:
1. CONFIG_WQ_POWER_EFFICIENT_DEFAULT disabled: energy saving is not that
important for Realtime workload but locality of any workqueues (thus
waking up only local CPU).
2. CONFIG_TIMERLAT_TRACER and CONFIG_OSNOISE_TRACER enabled: for
debugging latency issues.
3. CONFIG_BLK_CGROUP_IOLATENCY enabled: for users wanting to have
guarantees on IO latencies.
4. CONFIG_IRQ_TIME_ACCOUNTING enabled: for fine granularity task IRQ
accounting.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Krzysztof Kozlowski (krzk)
Status: In Progress
** Tags: 5.15 jammy realtime
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Krzysztof Kozlowski (krzk)
** Changed in: linux (Ubuntu)
Status: New => In Progress
** Tags added: 5.15 jammy realtime
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https://bugs.launchpad.net/bugs/1961588
Title:
Tweak realtime-related config options in Jammy realtime kernel
Status in linux package in Ubuntu:
In Progress
Bug description:
Config options below are useful for Realtime users:
1. CONFIG_WQ_POWER_EFFICIENT_DEFAULT disabled: energy saving is not
that important for Realtime workload but locality of any workqueues
(thus waking up only local CPU).
2. CONFIG_TIMERLAT_TRACER and CONFIG_OSNOISE_TRACER enabled: for
debugging latency issues.
3. CONFIG_BLK_CGROUP_IOLATENCY enabled: for users wanting to have
guarantees on IO latencies.
4. CONFIG_IRQ_TIME_ACCOUNTING enabled: for fine granularity task IRQ
accounting.
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