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# 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/memory/passt - Show memory usage of passt in kernel and userspace
#
# Copyright (c) 2022 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
gtools sed cat diff nm sort kill tee head tail chroot unshare mount mkdir cp
def meminfo_row
gout DIFF meminfo_diff /tmp/meminfo.before /tmp/meminfo.after __WHAT__
tl __NAME__
td __DIFF__ 3 0 0
endef
def meminfo_reverse_row
gout DIFF meminfo_diff /tmp/meminfo.after /tmp/meminfo.before __WHAT__
tl __NAME__
td __DIFF__ 3 0 0
endef
def nm_row
gout SIZE nm_size /tmp/nm.size __WHAT__
tl __WHAT__
td __SIZE__ 6 0 0
endef
def slab_row
gout COUNT slab_diff_count /tmp/slabinfo.before /tmp/slabinfo.after __WHAT__
gout SIZE slab_size /tmp/slabinfo.before __WHAT__
gout DIFF slab_diff_size /tmp/slabinfo.before /tmp/slabinfo.after __WHAT__
tl __WHAT__
td __COUNT__ 0 0 0
td __SIZE__ 0 0 0
td __DIFF__ 6 0 0
endef
def start_stop_diff
guest sed /proc/slabinfo -ne 's/^\([^ ]* *[^ ]* *[^ ]* *[^ ]*\).*/\\\1/p' > /tmp/slabinfo.before
guest cat /proc/meminfo > /tmp/meminfo.before
guest /usr/bin/passt.avx2 -l /tmp/log -s /tmp/sock -P /tmp/pid __OPTS__ --netns-only
sleep 2
guest cat /proc/meminfo > /tmp/meminfo.after
guest sed /proc/slabinfo -ne 's/^\([^ ]* *[^ ]* *[^ ]* *[^ ]*\).*/\\\1/p' > /tmp/slabinfo.after
guest kill \$(cat /tmp/pid)
guest diff -y --suppress-common-lines /tmp/meminfo.before /tmp/meminfo.after || :
guest nm -td -Sr --size-sort -P /usr/bin/passt.avx2 | head -30 | tee /tmp/nm.size
guest sed /proc/slabinfo -ne 's/\(.*<objsize>\).*$/\1/p' | tail -1; (diff -y --suppress-common-lines /tmp/slabinfo.before /tmp/slabinfo.after | sort -grk8)
endef
def summary
info Memory usage summary
info
th type MiB
set WHAT MemFree
set NAME used
meminfo_reverse_row
set WHAT AnonPages
set NAME userspace
meminfo_row
set WHAT Slab
set NAME kernel
meminfo_row
te
endef
guest mkdir /test
guest mount -t tmpfs none /test
guest mkdir /test/proc /test/dev /test/tmp
guest mount -o bind /proc /test/proc
guest mount -o bind /dev /test/dev
guest cp -Lr /bin /lib /lib64 /usr /sbin /test/
guest ulimit -Hn 300000
guest unshare -rUm -R /test
guest chroot .
guest meminfo_size() { grep "^$2:" $1 | tr -s ' ' | cut -f2 -d ' '; }
guest meminfo_diff() { echo $(( $(meminfo_size $2 $3) - $(meminfo_size $1 $3) )); }
guest nm_size() { grep -m1 "^$2 " $1 | cut -f4 -d ' '; }
guest slab_count() { grep "^$2 " $1 | tr -s ' ' | cut -f3 -d ' '; }
guest slab_size() { grep "^$2 " $1 | tr -s ' ' | cut -f4 -d ' '; }
guest slab_diff_count() { echo $(( $(slab_count $2 $3) - $(slab_count $1 $3) )); }
guest slab_diff_size() { echo $(( $(slab_count $2 $3) * $(slab_size $2 $3) - $(slab_count $1 $3) * $(slab_size $1 $3) )); }
test Memory usage: all TCP and UDP ports forwarded, IPv4 and IPv6
set OPTS -t all -u all
start_stop_diff
summary
info Userspace memory detail
info
th symbol MiB
set WHAT tcp_buf_discard
nm_row
set WHAT tcp6_l2_buf
nm_row
set WHAT tcp4_l2_buf
nm_row
set WHAT tc
nm_row
set WHAT pkt_buf
nm_row
set WHAT udp_splice_map
nm_row
set WHAT udp6_l2_buf
nm_row
set WHAT udp4_l2_buf
nm_row
set WHAT udp_tap_map
nm_row
set WHAT icmp_id_map
nm_row
set WHAT udp_splice_buf
nm_row
set WHAT tc_hash
nm_row
set WHAT pool_tap6_storage
nm_row
set WHAT pool_tap4_storage
nm_row
set WHAT tap6_l4
nm_row
set WHAT tap4_l4
nm_row
te
info Kernel memory detail
info
th objects count size MiB
set WHAT pid
slab_row
set WHAT dentry
slab_row
set WHAT Acpi-Parse
slab_row
set WHAT kmalloc-64
slab_row
set WHAT kmalloc-32
slab_row
set WHAT lsm_file_cache
slab_row
set WHAT filp
slab_row
set WHAT anon_vma_chain
slab_row
set WHAT ep_head
slab_row
set WHAT sock_inode_cache
slab_row
set WHAT signal_cache
slab_row
set WHAT TCPv6
slab_row
set WHAT TCP
slab_row
set WHAT UDPv6
slab_row
te
test Memory usage: all TCP ports forwarded, IPv4
set OPTS -t all -4
start_stop_diff
summary
test Memory usage: all TCP and UDP ports forwarded, IPv4
set OPTS -t all -u all -4
start_stop_diff
summary
test Memory usage: no ports forwarded
set OPTS -t none -u none
start_stop_diff
summary
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