From: "Peter Müller" <peter.mueller@ipfire.org>
To: development@lists.ipfire.org
Subject: Re: [PATCH 01/13] kernel: Change timer tick to 1000Hz
Date: Sat, 18 Sep 2021 16:09:28 +0000 [thread overview]
Message-ID: <ad925273-abfd-4b2e-649d-0a684763e341@ipfire.org> (raw)
In-Reply-To: <20210917114229.10704-1-michael.tremer@ipfire.org>
[-- Attachment #1: Type: text/plain, Size: 3774 bytes --]
Acked-by: Peter Müller <peter.mueller(a)ipfire.org>
> 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(a)ipfire.org>
> ---
> config/kernel/kernel.config.aarch64-ipfire | 6 +++---
> config/kernel/kernel.config.armv6l-ipfire | 6 +++---
> config/kernel/kernel.config.i586-ipfire | 6 +++---
> config/kernel/kernel.config.x86_64-ipfire | 6 +++---
> 4 files changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/config/kernel/kernel.config.aarch64-ipfire b/config/kernel/kernel.config.aarch64-ipfire
> index 450835d8b..54cd7c084 100644
> --- a/config/kernel/kernel.config.aarch64-ipfire
> +++ b/config/kernel/kernel.config.aarch64-ipfire
> @@ -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
> diff --git a/config/kernel/kernel.config.armv6l-ipfire b/config/kernel/kernel.config.armv6l-ipfire
> index b1af6555c..6fe17954d 100644
> --- a/config/kernel/kernel.config.armv6l-ipfire
> +++ b/config/kernel/kernel.config.armv6l-ipfire
> @@ -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
> diff --git a/config/kernel/kernel.config.i586-ipfire b/config/kernel/kernel.config.i586-ipfire
> index 5f5a496a8..a915682e4 100644
> --- a/config/kernel/kernel.config.i586-ipfire
> +++ b/config/kernel/kernel.config.i586-ipfire
> @@ -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
> diff --git a/config/kernel/kernel.config.x86_64-ipfire b/config/kernel/kernel.config.x86_64-ipfire
> index f8289aeb8..730e0791e 100644
> --- a/config/kernel/kernel.config.x86_64-ipfire
> +++ b/config/kernel/kernel.config.x86_64-ipfire
> @@ -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
>
next prev parent reply other threads:[~2021-09-18 16:09 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-17 11:42 Michael Tremer
2021-09-17 11:42 ` [PATCH 02/13] kernel: Disable suspending systems to RAM Michael Tremer
2021-09-18 16:09 ` Peter Müller
2021-09-17 11:42 ` [PATCH 03/13] kernel: Disable IRQ time accounting Michael Tremer
2021-09-18 16:10 ` Peter Müller
2021-09-17 11:42 ` [PATCH 04/13] kernel: Enable Pressure Stall Information Michael Tremer
2021-09-18 16:16 ` Peter Müller
2021-09-17 11:42 ` [PATCH 05/13] kernel: Disable SLUB debugging Michael Tremer
2021-09-18 16:27 ` Peter Müller
2021-09-21 9:42 ` Michael Tremer
2021-09-17 11:42 ` [PATCH 06/13] kernel: Disable any runtime testing Michael Tremer
2021-09-18 16:24 ` Peter Müller
2021-09-17 11:42 ` [PATCH 07/13] kernel: Disable OpenvSwitch Michael Tremer
2021-09-18 16:10 ` Peter Müller
2021-09-17 11:42 ` [PATCH 08/13] kernel: Disable network security hooks Michael Tremer
2021-09-18 16:23 ` Peter Müller
2021-09-17 11:42 ` [PATCH 09/13] kernel: Enable frontswap Michael Tremer
2021-09-18 16:20 ` Peter Müller
2021-09-17 11:42 ` [PATCH 10/13] kernel: Enable ExFAT on all architectures Michael Tremer
2021-09-18 16:10 ` Peter Müller
2021-09-20 13:48 ` Adolf Belka
2021-09-17 11:42 ` [PATCH 11/13] kernel: Enable support for TPM hardware Michael Tremer
2021-09-18 16:15 ` Peter Müller
2021-09-21 9:50 ` Michael Tremer
2021-09-21 11:40 ` Adolf Belka
2021-09-21 12:31 ` Adolf Belka
2021-10-01 17:25 ` Michael Tremer
2021-09-17 11:42 ` [PATCH 12/13] kernel: Zero-init all stack variables by default Michael Tremer
2021-09-18 16:11 ` Peter Müller
2021-09-21 9:50 ` Michael Tremer
2021-09-17 11:42 ` [PATCH 13/13] kernel: Enable all cgroups on all architectures Michael Tremer
2021-09-18 16:15 ` Peter Müller
2021-09-18 16:09 ` Peter Müller [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-09-07 15:02 [PATCH 01/13] kernel: Change timer tick to 1000Hz Michael Tremer
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