git: 9c73f38cd3ab - main - stress2: Add a new test scenario. Update the exclude list

The branch main has been updated by pho:

URL: https://cgit.FreeBSD.org/src/commit/?id=9c73f38cd3abc21e88ec446d44a35b27ee4439ea

commit 9c73f38cd3abc21e88ec446d44a35b27ee4439ea
Author:     Peter Holm <pho@FreeBSD.org>
AuthorDate: 2024-07-16 04:47:28 +0000
Commit:     Peter Holm <pho@FreeBSD.org>
CommitDate: 2024-07-16 04:47:28 +0000

    stress2: Add a new test scenario. Update the exclude list
---
 tools/test/stress2/misc/all.exclude |  3 ++-
 tools/test/stress2/misc/swapoff6.sh | 42 +++++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/tools/test/stress2/misc/all.exclude b/tools/test/stress2/misc/all.exclude
index 07cff21a1d9a..f8936d9efee8 100644
--- a/tools/test/stress2/misc/all.exclude
+++ b/tools/test/stress2/misc/all.exclude
@@ -60,6 +60,7 @@ suj36.sh		https://people.freebsd.org/~pho/stress/log/log0392.txt		20221114
 swapoff2.sh		swap_pager_force_pagein: read from swap failed			20171223
 swapoff3.sh		Excessive OOM killing						20220403
 swapoff5.sh		log0005.txt, known issue					20210111
+swapoff6.sh		https://people.freebsd.org/~pho/stress/log/log0540.txt		20240716
 systrace.sh		WiP								20200227
 systrace2.sh		WiP								20200227
 syzkaller16.sh		zonelimit issue							20210722
@@ -70,8 +71,8 @@ syzkaller59.sh		Page fault							20220625
 syzkaller65.sh		panic: in_pcblookup_hash_locked: invalid local address		20230318
 syzkaller66.sh		panic: in_pcbconnect: inp is already connected			20230621
 syzkaller67.sh		panic: ASan: Invalid access, 8-byte read at ...			20230621
+quota6.sh		https://people.freebsd.org/~pho/stress/log/log0456.txt		20240707
 truss3.sh		WiP								20200915
-unionfs19.sh		https://people.freebsd.org/~pho/stress/log/log0519.txt		20240702
 
 # Test not to run for other reasons:
 
diff --git a/tools/test/stress2/misc/swapoff6.sh b/tools/test/stress2/misc/swapoff6.sh
new file mode 100755
index 000000000000..b6ab08784f87
--- /dev/null
+++ b/tools/test/stress2/misc/swapoff6.sh
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2024 Peter Holm <pho@FreeBSD.org>
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+
+# A swap test scenario, using swapoff(8) and sort(1) for VM pressure
+
+# Out of free pages seen:://people.freebsd.org/~pho/stress/log/log0540.txt 
+
+. ../default.cfg
+[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1
+
+[ `swapinfo | wc -l` -eq 1 ] && exit 0
+set -u
+nmax=`sysctl -n hw.ncpu`
+[ $nmax -gt 4 ] && nmax=4
+
+for i in `jot $nmax`; do
+	timeout -k 2m 1m sort /dev/zero &
+	sleep .`jot -r 1 1 9`
+done
+while [ `swapinfo | tail -1 | awk '{sub("%","");print $NF}'` -lt 2 ]; do sleep 1; done
+
+start=`date +%s`
+while [ $((`date +%s` - start)) -lt 300 ]; do
+	while ! swapoff -a > /dev/null 2>&1; do sleep .1; done
+	swapon -a > /dev/null
+	ncur=`pgrep sort | wc -l`
+	if [ $ncur -lt $nmax ]; then
+		echo "Starting $((nmax - ncur)) sort"
+		for i in `jot $((nmax - ncur))`; do
+			timeout -k 2m 1m sort /dev/zero &
+			sleep .`jot -r 1 1 9`
+		done
+	fi
+done
+pkill -9 sort
+wait
+exit 0