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passt/test/lib/layout_ugly
Stefano Brivio 40fc9e6e7b 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 <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
2022-11-04 12:01:27 +01:00

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#!/bin/sh
#
# SPDX-License-Identifier: AGPL-3.0-or-later
#
# PASST - Plug A Simple Socket Transport
# for qemu/UNIX domain socket mode
#
# PASTA - Pack A Subtle Tap Abstraction
# for network namespace/tap device mode
#
# test/lib/layout_ugly - screen-scraped tmux pane layouts
#
# Copyright (c) 2022 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
# layout_host() - Simple host commands layout with info and host panes
layout_host() {
sleep 3
tmux kill-pane -a -t 0
cmd_write 0 clear
tmux split-window -h -l '35%' -t passt_test:1.0
PANE_HOST=0
PANE_INFO=1
get_info_cols
tmux send-keys -l -t ${PANE_INFO} 'while cat '"$STATEBASE/log_pipe"'; do :; done'
tmux send-keys -t ${PANE_INFO} -N 100 C-m
tmux select-pane -t ${PANE_INFO} -T "test log"
if context_exists host; then
pane_watch_contexts 0 host host
else
tmux pipe-pane -O -t ${PANE_HOST} "cat >> ${LOGDIR}/pane_host.log"
tmux select-pane -t ${PANE_HOST} -T "host"
fi
info_layout "host commands only"
sleep 1
}
# layout_pasta_simple() - Panes for host and pasta
layout_pasta_simple() {
sleep 3
tmux kill-pane -a -t 0
cmd_write 0 clear
tmux split-window -v -t passt_test
tmux split-window -h -t passt_test
PANE_PASST=0
PANE_HOST=1
PANE_INFO=2
get_info_cols
tmux send-keys -l -t ${PANE_INFO} 'while cat '"$STATEBASE/log_pipe"'; do :; done'
tmux send-keys -t ${PANE_INFO} -N 100 C-m
tmux select-pane -t ${PANE_INFO} -T "test log"
if context_exists host; then
pane_watch_contexts ${PANE_HOST} host host
else
tmux pipe-pane -O -t ${PANE_HOST} "cat >> ${LOGDIR}/pane_host.log"
tmux select-pane -t ${PANE_HOST} -T "host"
fi
if context_exists passt; then
pane_watch_contexts ${PANE_PASST} host host
else
tmux pipe-pane -O -t ${PANE_PASST} "cat >> ${LOGDIR}/pane_passt.log"
tmux select-pane -t ${PANE_PASST} -T "pasta"
fi
info_layout "single pasta instance"
sleep 1
}
# layout_memory() - Screen-scraped panes for memory usage tests, big guest pane
layout_memory() {
sleep 3
tmux kill-pane -a -t 0
cmd_write 0 clear
tmux split-window -h -l '35%' -t passt_test
PANE_GUEST=0
PANE_INFO=1
get_info_cols
tmux send-keys -l -t ${PANE_INFO} 'while cat '"$STATEBASE/log_pipe"'; do :; done'
tmux send-keys -t ${PANE_INFO} -N 100 C-m
tmux select-pane -t ${PANE_INFO} -T "test log"
if context_exists guest; then
pane_watch_contexts ${PANE_GUEST} guest guest
else
tmux pipe-pane -O -t ${PANE_GUEST} "cat >> ${LOGDIR}/pane_guest.log"
tmux select-pane -t ${PANE_GUEST} -T "guest"
fi
info_layout "memory usage"
sleep 1
}