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94 lines
2.6 KiB
94 lines
2.6 KiB
From 837c6bd12a5eedc3fbf46291bf1040e724786efd Mon Sep 17 00:00:00 2001 |
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From: Marcelo Tosatti <mtosatti@redhat.com> |
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Date: Fri, 31 Aug 2018 13:27:12 +0200 |
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Subject: [PATCH] start/stop rt-entsk daemon on initialization/shutdown |
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MIME-Version: 1.0 |
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Content-Type: text/plain; charset=UTF-8 |
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Content-Transfer-Encoding: 8bit |
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The rt-entsk application, part of newer rt-setup packages, |
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worksaround a latency issue with static key |
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IPI's. What it does it: |
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/* |
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* Open a socket, and enable timestamping on it. |
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* |
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* This is to avoid Chrony from changing timestamping |
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* user count from 0->1 and vice-versa, causing |
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* static key enable/disable IPIs. |
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* |
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*/ |
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Start/stop the systemctl service from the realtime-virtual-host |
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and realtime-virtual-guest profiles. |
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Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> |
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Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com> |
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--- |
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profiles/realtime-virtual-guest/script.sh | 19 +++++++++++++++++++ |
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profiles/realtime-virtual-guest/tuned.conf | 3 +++ |
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profiles/realtime-virtual-host/script.sh | 2 ++ |
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3 files changed, 24 insertions(+) |
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create mode 100755 profiles/realtime-virtual-guest/script.sh |
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diff --git a/profiles/realtime-virtual-guest/script.sh b/profiles/realtime-virtual-guest/script.sh |
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new file mode 100755 |
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index 0000000..33cb730 |
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--- /dev/null |
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+++ b/profiles/realtime-virtual-guest/script.sh |
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@@ -0,0 +1,19 @@ |
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+#!/bin/sh |
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+ |
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+. /usr/lib/tuned/functions |
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+ |
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+start() { |
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+ systemctl start rt-entsk |
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+ return "$?" |
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+} |
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+ |
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+stop() { |
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+ systemctl stop rt-entsk |
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+ return "$?" |
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+} |
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+ |
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+verify() { |
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+ return "$?" |
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+} |
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+ |
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+process $@ |
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diff --git a/profiles/realtime-virtual-guest/tuned.conf b/profiles/realtime-virtual-guest/tuned.conf |
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index fb2bc42..8e1f67e 100644 |
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--- a/profiles/realtime-virtual-guest/tuned.conf |
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+++ b/profiles/realtime-virtual-guest/tuned.conf |
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@@ -36,5 +36,8 @@ group.ktimersoftd=0:f:3:*:ktimersoftd.* |
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ps_blacklist=ksoftirqd.*;rcuc.*;rcub.*;ktimersoftd.* |
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+[script] |
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+script=${i:PROFILE_DIR}/script.sh |
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+ |
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[bootloader] |
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cmdline_rvg=+nohz=on nohz_full=${isolated_cores} rcu_nocbs=${isolated_cores} |
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diff --git a/profiles/realtime-virtual-host/script.sh b/profiles/realtime-virtual-host/script.sh |
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index 515d254..a9366cb 100755 |
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--- a/profiles/realtime-virtual-host/script.sh |
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+++ b/profiles/realtime-virtual-host/script.sh |
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@@ -87,6 +87,7 @@ start() { |
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if [ -f $CACHE_VALUE_FILE ]; then |
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echo `cat $CACHE_VALUE_FILE` > $KVM_LAPIC_FILE |
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fi |
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+ systemctl start rt-entsk |
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return 0 |
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} |
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@@ -94,6 +95,7 @@ start() { |
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stop() { |
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[ "$1" = "full_rollback" ] && teardown_kvm_mod_low_latency |
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enable_ksm |
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+ systemctl stop rt-entsk |
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return "$?" |
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} |
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-- |
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2.14.4 |
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