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test/perf: Disable periodic throughput reports to avoid vhost hang

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It appears that if we run throughput tests with one-second periodic
reports, the sending side of the vhost channel used for SSH-based
command dispatch occasionally stops working altogether. I haven't
investigated this further, all I see is that output is truncated
at some point, and doesn't resume.

If we use gzip compression (ssh -C) this happens less frequently,
but it still happens, seemingly indicating the issue is probably
related to vhost itself.

Disable periodic reports in iperf3 clients. The -i options were
actually redundant, so remove them from both test files as well as
from test_iperf3().

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio 2022-09-21 01:21:32 +02:00
parent 9f8b783d4a
commit df29ebfe02
5 changed files with 5 additions and 5 deletions
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2
test/lib/test
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@ -44,7 +44,7 @@ test_iperf3() {
'(' \
' for i in $(seq 0 '${__procs}'); do' \
' iperf3 -c '${__dest}' -p '${__port} \
' -t'${__time}' -T s${i} '"${@}"' &' \
' -t'${__time}' -i0 -T s${i} '"${@}"' &' \
' done;' \
' wait' \
')'

2
test/perf/passt_tcp
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@ -46,7 +46,7 @@ set THREADS 1
set STREAMS 8
set TIME 10
hout OMIT echo __TIME__ / 6 | bc -l
set OPTS -Z -P __STREAMS__ -l 1M -i1 -O__OMIT__ --pacing-timer 1000000
set OPTS -Z -P __STREAMS__ -l 1M -O__OMIT__ --pacing-timer 1000000
info Throughput in Gbps, latency in µs, one thread at __FREQ__ GHz, __STREAMS__ streams
report passt tcp __THREADS__ __FREQ__

2
test/perf/passt_udp
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@ -38,7 +38,7 @@ hout FREQ [ -n "__FREQ_CPUFREQ__" ] && echo __FREQ_CPUFREQ__ || echo __FREQ_PROC
set THREADS 4
set STREAMS 1
set TIME 10
set OPTS -u -i1 -P __STREAMS__ --pacing-timer 1000
set OPTS -u -P __STREAMS__ --pacing-timer 1000
info Throughput in Gbps, latency in µs, __THREADS__ threads at __FREQ__ GHz, one stream each

2
test/perf/pasta_tcp
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@ -25,7 +25,7 @@ set THREADS 2
set STREAMS 2
set TIME 10
hout OMIT echo __TIME__ / 6 | bc -l
set OPTS -Z -w 4M -l 1M -P __STREAMS__ -i1 -O__OMIT__ --pacing-timer 10000
set OPTS -Z -w 4M -l 1M -P __STREAMS__ -O__OMIT__ --pacing-timer 10000
hout FREQ_PROCFS (echo "scale=1"; sed -n 's/cpu MHz.*: \([0-9]*\)\..*$/(\1+10^2\/2)\/10^3/p' /proc/cpuinfo) | bc -l | head -n1
hout FREQ_CPUFREQ (echo "scale=1"; printf '( %i + 10^5 / 2 ) / 10^6\n' $(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq) ) | bc -l

2
test/perf/pasta_udp
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@ -23,7 +23,7 @@ hout FREQ [ -n "__FREQ_CPUFREQ__" ] && echo __FREQ_CPUFREQ__ || echo __FREQ_PROC
set THREADS 1
set STREAMS 4
set TIME 10
set OPTS -u -i1 -P __STREAMS__
set OPTS -u -P __STREAMS__
info Throughput in Gbps, latency in µs, one thread at __FREQ__ GHz, __STREAMS__ streams