kernel: Change timer tick to 1000Hz

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>

diff --git a/config/kernel/kernel.config.aarch64-ipfire b/config/kernel/kernel.config.aarch64-ipfire
index 450835d8b596a8bf55e970c46992a6fec0a4b4fe..54cd7c084d570a532dcc66a3d4b430202739d044 100644 (file)
--- 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 b1af6555c4b8c2f4402705e95549c9fc40830936..6fe17954dc1429424e9863e2a56238fec872f983 100644 (file)
--- 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 5f5a496a8c3b357108066cfd9b7be397c50398b5..a915682e48d67afc16b9bd724d09ec7bb9059745 100644 (file)
--- 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 f8289aeb89c15c2c434049948629aa31598e48a5..730e0791ef8e4fcafa93b56c1ade7f6671e968cf 100644 (file)
--- 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