case-swap-w-seq: swap write sequential performance

This is done via eating memory of size (MemAvailable + SwapTotal) * 3 / 4.

-n nr_processes is the number of multi-process
-t nr_threads is the number of multi-threads when eating memory

Their default value is nr_cpu.

v4: fix the error message.

Signed-off-by: Yanbing Jiang <yanbing.jiang@intel.com>
Reviewed-by: Huang, Ying < ying.huang@intel.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/case-swap-w-seq b/case-swap-w-seq
new file mode 100755
index 0000000..44d30b0
--- /dev/null
+++ b/case-swap-w-seq
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+. ./hw_vars
+
+if [ "$SwapTotal" -eq 0 ]; then
+	echo "No swap space. Please setup swap before running $0" >&2
+	exit 1
+fi
+
+pass_size=$(( ((MemAvailable + SwapTotal) << 10) * 3 / 4))
+
+testcase=$(basename $0)
+if [ "${testcase%-mt}" != "$testcase" ]; then
+	multi_task_option="-t"
+else
+	multi_task_option="-n"
+fi
+nr_task=${nr_task:-nr_cpu}
+$USEMEM $multi_task_option $nr_task $((pass_size / nr_task))