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test: iperf3 3.16 introduces multiple threads, drop our own implementation of that

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Starting from iperf3 version 3.16, -P / --parallel spawns multiple
clients as separate threads, instead of multiple streams serviced by
the same thread.

So we can drop our lib/test implementation to spawn several iperf3
client and server processes and finally simplify things quite a bit.

Adjust number of threads and UDP sending bandwidth to values that seem
to be more or less matching previous throughput tests on my setup.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Tested-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Stefano Brivio 2024-07-24 22:40:32 +02:00
parent 606e0c7b95
commit f72d35a78d
6 changed files with 127 additions and 145 deletions

2
test/lib/perf_report
View file

@ -18,7 +18,7 @@ PERF_LINK_COUNT=0
PERF_JS="${LOGDIR}/web/perf.js"
PERF_TEMPLATE_HTML="document.write('"'
Throughput in Gbps, latency in µs. Threads are <span style="font-family: monospace;">iperf3</span> processes, <i>passt</i> and <i>pasta</i> are currently single-threaded.<br/>
Throughput in Gbps, latency in µs. Threads are <span style="font-family: monospace;">iperf3</span> threads, <i>passt</i> and <i>pasta</i> are currently single-threaded.<br/>
Click on numbers to show test execution. Measured at head, commit <span style="font-family: monospace;">__commit__</span>.
<style type="text/CSS">

31
test/lib/test
View file

@ -15,18 +15,13 @@
# test_iperf3s() - Start iperf3 server
# $1: Destination/server context
# $2: Port number, ${i} is translated to process index
# $3: Number of processes to run in parallel
# $2: Port number
test_iperf3s() {
__sctx="${1}"
__port="${2}"
__procs="$((${3} - 1))"
pane_or_context_run_bg "${__sctx}" \
'for i in $(seq 0 '${__procs}'); do' \
' iperf3 -s -p'${__port}' &' \
' echo $! > s${i}.pid; ' \
'done' \
'iperf3 -s -p'${__port}' & echo $! > s.pid' \
sleep 1 # Wait for server to be ready
}
@ -36,7 +31,7 @@ test_iperf3s() {
test_iperf3k() {
__sctx="${1}"
pane_or_context_run "${__sctx}" 'kill -INT $(cat s*.pid); rm s*.pid'
pane_or_context_run "${__sctx}" 'kill -INT $(cat s.pid); rm s.pid'
sleep 3 # Wait for kernel to free up ports
}
@ -46,37 +41,29 @@ test_iperf3k() {
# $2: Source/client context
# $3: Destination name or address for client
# $4: Port number, ${i} is translated to process index
# $5: Number of processes to run in parallel
# $6: Run time, in seconds
# $5: Run time, in seconds
# $@: Client options
test_iperf3() {
__var="${1}"; shift
__cctx="${1}"; shift
__dest="${1}"; shift
__port="${1}"; shift
__procs="$((${1} - 1))"; shift
__time="${1}"; shift
pane_or_context_run "${__cctx}" 'rm -f c*.json'
pane_or_context_run "${__cctx}" 'rm -f c.json'
# A 1s wait for connection on what's basically a local link
# indicates something is pretty wrong
__timeout=1000
pane_or_context_run "${__cctx}" \
'(' \
' for i in $(seq 0 '${__procs}'); do' \
' iperf3 -J -c '${__dest}' -p '${__port} \
' --connect-timeout '${__timeout} \
' -t'${__time}' -i0 -T c${i} '"${@}" \
' > c${i}.json &' \
' done;' \
' wait' \
')'
'iperf3 -J -c '${__dest}' -p '${__port} \
' --connect-timeout '${__timeout} \
' -t'${__time}' -i0 '"${@}"' > c.json' \
__jval=".end.sum_received.bits_per_second"
__bw=$(pane_or_context_output "${__cctx}" \
'cat c*.json | jq -rMs "map('${__jval}') | add"')
'cat c.json | jq -rMs "map('${__jval}') | add"')
TEST_ONE_subs="$(list_add_pair "${TEST_ONE_subs}" "__${__var}__" "${__bw}" )"
}