Add benchmark CI for sysbench and getpid

regression/benchmark/sysbench-cpu/run.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+TEST_TIME=${1:-60}
+TEST_THREADS=${2:-4}
+
+echo "*** Doing sysbench CPU test with ${TEST_THREADS} threads for ${TEST_TIME} seconds ***"
+
+/benchmark/bin/sysbench cpu \
+    --threads=${TEST_THREADS} \
+    --time=${TEST_TIME} \
+    --cpu-max-prime=20000 run
+