From 40fc9e6e7b46819bfa275abf8e0f0e5b6ae7316b Mon Sep 17 00:00:00 2001 From: Stefano Brivio Date: Mon, 31 Oct 2022 12:20:59 +0100 Subject: test: Add memory/passt test cases These show a summary of memory usage in kernel and userspace with different port forwarding configurations, details of userspace usage using 'nm' (passt only uses statically allocated memory), and details of kernel memory from slab reporting facilities. This adds a new test image, mbuto.mem.img, with harcoded IPv4 and IPv6 addresses and routes, and just the tools we need to start and stop passt, to report from /proc/slabinfo, /proc/meminfo, and to print and parse symbol sizes using nm(1). passt can't pivot_root() for sandboxing purposes on ramfs, so we need to create another filesystem and chroot into it, first. We don't want to use pane context functions, as we're checking memory usage for sockets: resort to screen-scraping. Configure a dummy interface to provide passt with an appearance of working IPv4 and IPv6 connectivity, contributed by David. Signed-off-by: Stefano Brivio Reviewed-by: David Gibson --- test/lib/setup_ugly | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'test/lib/setup_ugly') diff --git a/test/lib/setup_ugly b/test/lib/setup_ugly index 764177e..bcf07ef 100755 --- a/test/lib/setup_ugly +++ b/test/lib/setup_ugly @@ -13,6 +13,8 @@ # Copyright (c) 2022 Red Hat GmbH # Author: Stefano Brivio +INITRAMFS_MEM="${BASEPATH}/mbuto.mem.img" + # setup_distro() - Set up pane layout for distro tests setup_distro() { layout_host @@ -25,6 +27,20 @@ setup_pasta_options() { layout_pasta_simple } +# setup_memory() - Start qemu in guest pane, and passt in passt context +setup_memory() { + layout_memory + + pane_or_context_run guest 'qemu-system-$(uname -m)' \ + ' -machine accel=kvm' \ + ' -m '${VMEM}' -cpu host -smp '${VCPUS} \ + ' -kernel ' "/boot/vmlinuz-$(uname -r)" \ + ' -initrd '${INITRAMFS_MEM}' -nographic -serial stdio' \ + ' -nodefaults' \ + ' -append "console=ttyS0 mitigations=off apparmor=0"' \ + " -pidfile ${STATESETUP}/qemu.pid" +} + # teardown_distro() - Nothing to do, yet teardown_distro() { : @@ -36,3 +52,7 @@ teardown_pasta_options() { teardown_context_watch ${PANE_PASST} passt } +# teardown_passt() - Kill qemu with ^C, remove passt PID file +teardown_memory() { + kill $(cat "${STATESETUP}/qemu.pid") +} -- cgit v1.2.3