From 874762b4c06e3bc7862e119ee12a23a16352f649 Mon Sep 17 00:00:00 2001

From: Marcelo Tosatti <mtosatti@redhat.com>

Date: Wed, 30 Sep 2015 18:33:47 -0300

Subject: [PATCH] tuned-profiles-nfv: fix find-lapictscdeadline-optimal.sh for

 CPUS where ns > 6500

If the result of lapic-tsc-deadline kvm-unit-test continues

to decrease as ns increases, then use highest ns value.

Reported and tested by Luiz and Hai.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Resolves: rhbz#1267284

---

 profiles/realtime-virtual-host/find-lapictscdeadline-optimal.sh | 6 ++++++

 1 file changed, 6 insertions(+)

diff --git a/profiles/realtime-virtual-host/find-lapictscdeadline-optimal.sh b/profiles/realtime-virtual-host/find-lapictscdeadline-optimal.sh

index d858eb6..539c47e 100755

--- a/profiles/realtime-virtual-host/find-lapictscdeadline-optimal.sh

+++ b/profiles/realtime-virtual-host/find-lapictscdeadline-optimal.sh

@@ -20,5 +20,11 @@ for i in `seq 1 $lines`; do

 	fi

 	prev_value=$a

 done

+# if still decreasing, then use highest ns value

+if [ $value -le 99 ]; then

+	echo -n "optimal value for lapic_timer_advance_ns is: "

+	awk "NR==$(($i - 1))" $1 | cut -f 1 -d ":"

+	exit 0

+fi

 echo optimal not found

 exit 1

-- 

2.4.3