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kernel: Change timer tick to 1000Hz

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This change is required to make the system respond faster to any
realtime events (sending or receiving data packets).

It will wake up at least one core 1000 times a second which will result
in finer timer granularity and make scheduling smoother. HTB for
example sends large packet bursts on each timer even to keep up data
rates which is not helpful for most applications.

The change might increase resource consumption and overhead slightly on
some systems, but since we are running in an idle-dyntick configuration,
we should not keep awake any cores that have not been awake before.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Acked-by: Peter Müller <peter.mueller@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
This commit is contained in:
Michael Tremer
2021-09-17 11:42:17 +00:00
committed by Arne Fitzenreiter
parent f06578af15
commit 0e83b0d03c
4 changed files with 12 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
config/kernel/kernel.config.aarch64-ipfire
View File

@@ -370,11 +370,11 @@ CONFIG_NR_CPUS=8
CONFIG_HOTPLUG_CPU=y
# CONFIG_NUMA is not set
CONFIG_HOLES_IN_ZONE=y
CONFIG_HZ_100=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y

6
config/kernel/kernel.config.armv6l-ipfire
View File

@@ -588,13 +588,13 @@ CONFIG_HOTPLUG_CPU=y
CONFIG_ARM_PSCI=y
CONFIG_ARCH_NR_GPIO=512
CONFIG_HZ_FIXED=0
CONFIG_HZ_100=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_200 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_500 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
CONFIG_ARM_PATCH_IDIV=y
CONFIG_AEABI=y

6
config/kernel/kernel.config.i586-ipfire
View File

@@ -438,11 +438,11 @@ CONFIG_X86_INTEL_TSX_MODE_OFF=y
# CONFIG_X86_INTEL_TSX_MODE_AUTO is not set
CONFIG_EFI=y
CONFIG_EFI_STUB=y
CONFIG_HZ_100=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
# CONFIG_KEXEC is not set
CONFIG_CRASH_DUMP=y

6
config/kernel/kernel.config.x86_64-ipfire
View File

@@ -430,11 +430,11 @@ CONFIG_X86_INTEL_TSX_MODE_OFF=y
CONFIG_EFI=y
CONFIG_EFI_STUB=y
CONFIG_EFI_MIXED=y
CONFIG_HZ_100=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
# CONFIG_KEXEC is not set
# CONFIG_KEXEC_FILE is not set