Message ID | 20220222081840.15257-1-krzysztof.kozlowski@canonical.com |
---|---|
State | New |
Headers | show |
Series | [J/realtime,v2] UBUNTU: [Config] realtime: tweak config for realtime tasks | expand |
Acked-by: Tim Gardner <tim.gardner@canonical.com> Since you've gone to the trouble to create a bug report, you might as well add some policies and notes in the annotations. On 2/22/22 01:18, Krzysztof Kozlowski wrote: > BugLink: https://bugs.launchpad.net/bugs/1961588 > > Change kernel config to fit Realtime use cases: > > 1. CONFIG_WQ_POWER_EFFICIENT_DEFAULT disable: 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 enable: for > debugging latency issues. > > 3. CONFIG_BLK_CGROUP_IOLATENCY enable: for users wanting to have > guarantees on IO latencies. > > 4. CONFIG_IRQ_TIME_ACCOUNTING enable: for fine granularity task IRQ > accounting. > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> > --- > Changes since v1: > 1. Correct subject > > > debian.realtime/config/config.common.ubuntu | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-) > > diff --git a/debian.realtime/config/config.common.ubuntu b/debian.realtime/config/config.common.ubuntu > index 9d325d4ab744..9cb2a8111c51 100644 > --- a/debian.realtime/config/config.common.ubuntu > +++ b/debian.realtime/config/config.common.ubuntu > @@ -983,7 +983,7 @@ CONFIG_BITREVERSE=y > CONFIG_BLK_CGROUP=y > CONFIG_BLK_CGROUP_FC_APPID=y > CONFIG_BLK_CGROUP_IOCOST=y > -# CONFIG_BLK_CGROUP_IOLATENCY is not set > +CONFIG_BLK_CGROUP_IOLATENCY=y > CONFIG_BLK_CGROUP_IOPRIO=y > CONFIG_BLK_CGROUP_RWSTAT=y > CONFIG_BLK_DEBUG_FS=y > @@ -3848,6 +3848,7 @@ CONFIG_HAVE_PREEMPT_LAZY=y > CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y > CONFIG_HAVE_RELIABLE_STACKTRACE=y > CONFIG_HAVE_RSEQ=y > +CONFIG_HAVE_SCHED_AVG_IRQ=y > CONFIG_HAVE_SETUP_PER_CPU_AREA=y > CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y > CONFIG_HAVE_STACKPROTECTOR=y > @@ -4894,7 +4895,7 @@ CONFIG_IRQ_FORCED_THREADING=y > CONFIG_IRQ_MSI_IOMMU=y > CONFIG_IRQ_POLL=y > CONFIG_IRQ_REMAP=y > -# CONFIG_IRQ_TIME_ACCOUNTING is not set > +CONFIG_IRQ_TIME_ACCOUNTING=y > CONFIG_IRQ_WORK=y > CONFIG_IR_ENE=m > CONFIG_IR_FINTEK=m > @@ -7012,7 +7013,7 @@ CONFIG_OPTPROBES=y > CONFIG_ORANGEFS_FS=m > CONFIG_ORINOCO_USB=m > CONFIG_OSF_PARTITION=y > -# CONFIG_OSNOISE_TRACER is not set > +CONFIG_OSNOISE_TRACER=y > CONFIG_OUTPUT_FORMAT="elf64-x86-64" > CONFIG_OVERLAY_FS=m > # CONFIG_OVERLAY_FS_INDEX is not set > @@ -10468,7 +10469,7 @@ CONFIG_TIFM_CORE=m > CONFIG_TIGON3=m > CONFIG_TIGON3_HWMON=y > CONFIG_TIMERFD=y > -# CONFIG_TIMERLAT_TRACER is not set > +CONFIG_TIMERLAT_TRACER=y > CONFIG_TIMER_ACPI=y > CONFIG_TIMER_IMX_SYS_CTR=y > CONFIG_TIMER_OF=y > @@ -11806,7 +11807,7 @@ CONFIG_WM831X_WATCHDOG=m > CONFIG_WM8350_POWER=m > CONFIG_WM8350_WATCHDOG=m > CONFIG_WMI_BMOF=m > -CONFIG_WQ_POWER_EFFICIENT_DEFAULT=y > +# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set > # CONFIG_WQ_WATCHDOG is not set > CONFIG_WWAN=y > CONFIG_WWAN_HWSIM=m
On 22/02/2022 13:31, Tim Gardner wrote: > Acked-by: Tim Gardner <tim.gardner@canonical.com> > > Since you've gone to the trouble to create a bug report, you might as > well add some policies and notes in the annotations. > Makes sense, thanks! Best regards, Krzysztof
On 22/02/2022 13:31, Tim Gardner wrote: > Acked-by: Tim Gardner <tim.gardner@canonical.com> > > Since you've gone to the trouble to create a bug report, you might as > well add some policies and notes in the annotations. > v3 will be coming Best regards, Krzysztof
diff --git a/debian.realtime/config/config.common.ubuntu b/debian.realtime/config/config.common.ubuntu index 9d325d4ab744..9cb2a8111c51 100644 --- a/debian.realtime/config/config.common.ubuntu +++ b/debian.realtime/config/config.common.ubuntu @@ -983,7 +983,7 @@ CONFIG_BITREVERSE=y CONFIG_BLK_CGROUP=y CONFIG_BLK_CGROUP_FC_APPID=y CONFIG_BLK_CGROUP_IOCOST=y -# CONFIG_BLK_CGROUP_IOLATENCY is not set +CONFIG_BLK_CGROUP_IOLATENCY=y CONFIG_BLK_CGROUP_IOPRIO=y CONFIG_BLK_CGROUP_RWSTAT=y CONFIG_BLK_DEBUG_FS=y @@ -3848,6 +3848,7 @@ CONFIG_HAVE_PREEMPT_LAZY=y CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y CONFIG_HAVE_RELIABLE_STACKTRACE=y CONFIG_HAVE_RSEQ=y +CONFIG_HAVE_SCHED_AVG_IRQ=y CONFIG_HAVE_SETUP_PER_CPU_AREA=y CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y CONFIG_HAVE_STACKPROTECTOR=y @@ -4894,7 +4895,7 @@ CONFIG_IRQ_FORCED_THREADING=y CONFIG_IRQ_MSI_IOMMU=y CONFIG_IRQ_POLL=y CONFIG_IRQ_REMAP=y -# CONFIG_IRQ_TIME_ACCOUNTING is not set +CONFIG_IRQ_TIME_ACCOUNTING=y CONFIG_IRQ_WORK=y CONFIG_IR_ENE=m CONFIG_IR_FINTEK=m @@ -7012,7 +7013,7 @@ CONFIG_OPTPROBES=y CONFIG_ORANGEFS_FS=m CONFIG_ORINOCO_USB=m CONFIG_OSF_PARTITION=y -# CONFIG_OSNOISE_TRACER is not set +CONFIG_OSNOISE_TRACER=y CONFIG_OUTPUT_FORMAT="elf64-x86-64" CONFIG_OVERLAY_FS=m # CONFIG_OVERLAY_FS_INDEX is not set @@ -10468,7 +10469,7 @@ CONFIG_TIFM_CORE=m CONFIG_TIGON3=m CONFIG_TIGON3_HWMON=y CONFIG_TIMERFD=y -# CONFIG_TIMERLAT_TRACER is not set +CONFIG_TIMERLAT_TRACER=y CONFIG_TIMER_ACPI=y CONFIG_TIMER_IMX_SYS_CTR=y CONFIG_TIMER_OF=y @@ -11806,7 +11807,7 @@ CONFIG_WM831X_WATCHDOG=m CONFIG_WM8350_POWER=m CONFIG_WM8350_WATCHDOG=m CONFIG_WMI_BMOF=m -CONFIG_WQ_POWER_EFFICIENT_DEFAULT=y +# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set # CONFIG_WQ_WATCHDOG is not set CONFIG_WWAN=y CONFIG_WWAN_HWSIM=m
BugLink: https://bugs.launchpad.net/bugs/1961588 Change kernel config to fit Realtime use cases: 1. CONFIG_WQ_POWER_EFFICIENT_DEFAULT disable: 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 enable: for debugging latency issues. 3. CONFIG_BLK_CGROUP_IOLATENCY enable: for users wanting to have guarantees on IO latencies. 4. CONFIG_IRQ_TIME_ACCOUNTING enable: for fine granularity task IRQ accounting. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> --- Changes since v1: 1. Correct subject debian.realtime/config/config.common.ubuntu | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)