1 files changed, 55 insertions, 0 deletions

diff --git a/recipes-kernel/cryptodev/sdk_patches/0060-more-precision-in-running-mpstat.patch b/recipes-kernel/cryptodev/sdk_patches/0060-more-precision-in-running-mpstat.patch
new file mode 100644
index 000000000..ae749bdca
--- /dev/null
+++ b/recipes-kernel/cryptodev/sdk_patches/0060-more-precision-in-running-mpstat.patch
@@ -0,0 +1,55 @@
+From 26291db7df602d3d3d5601817229822b13904fe9 Mon Sep 17 00:00:00 2001
+From: Cristian Stoica <cristian.stoica@nxp.com>
+Date: Wed, 26 Oct 2016 09:48:44 +0300
+Subject: [PATCH 060/104] more precision in running mpstat
+
+Start mpstat one second later than the tests so we don't measure
+transient issues. Likewise, stop mpstat just before the tests terminate
+so we don't record incorrect CPU idle.
+
+Signed-off-by: Cristian Stoica <cristian.stoica@nxp.com>
+---
+ tests/async_speed_multi.sh | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/tests/async_speed_multi.sh b/tests/async_speed_multi.sh
+index a28f72d..5268c86 100755
+--- a/tests/async_speed_multi.sh
++++ b/tests/async_speed_multi.sh
+@@ -22,7 +22,6 @@
+ NUM_CORES=`nproc`
+ OUT_BASENAME="async_speed"
+ S_TIME_FORMAT=ISO
+-MPSTAT="mpstat"
+ MPSTAT_OUT="mpstat_out"
+ 
+ function usage
+@@ -47,7 +46,6 @@ function get_cpu_idle
+ {
+     header_line=`grep %idle ${MPSTAT_OUT} | head -n 1 | sed 's/\s\+/ /g'`
+     idle_column=`echo $header_line | wc -w`
+-
+     average_idle=`grep Average ${MPSTAT_OUT} | sed 's/\s\+/ /g' | cut -d' ' -f ${idle_column} | tail -n 1`
+ 
+     echo $average_idle
+@@ -63,7 +61,7 @@ function run_parallel
+     echo "Running $mvalue threads in parallel:"
+     echo "    $CMD"
+ 
+-    $MPSTAT 1 $(($tvalue-1)) &> $MPSTAT_OUT &
++    (sleep 1; mpstat 1 $(($tvalue-2))) &> $MPSTAT_OUT &
+     MPSTAT_PID=$!
+ 
+     PIDS=""
+@@ -126,6 +124,8 @@ function main
+        [ -z "$mvalue" ] && mvalue=`nproc` # thread count defaults to nproc
+        [ -z "$nvalue" ] && nvalue=256     # 256 bytes default buffer size
+ 
++       [ "$tvalue" -lt 5 ] && tvalue=5
++
+        case "$alg_name" in
+            "null"    |\
+            "aes-128-cbc" |\
+-- 
+2.10.2
+