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test/perf: Try sourcing maximum scaling frequency from cpufreq

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On most recent CPUs, that's a better indication of all-core turbo
frequency, or non-turbo frequency, than /proc/cpuinfo.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio 2021-10-21 01:24:22 +02:00
parent 819d13bb92
commit 6257a2752e
4 changed files with 14 additions and 4 deletions
test/perf
pasta_tcp

5
test/perf/pasta_tcp
View file

@ -25,7 +25,10 @@ ns sysctl -w net.ipv4.tcp_timestamps=0
set THREADS 2
set STREAMS 2
set OPTS -Z -w 4M -l 1M -P __STREAMS__ -i1 -t30 -O5 --pacing-timer 10000
hout FREQ (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_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
hout FREQ [ -n "__FREQ_CPUFREQ__" ] && echo __FREQ_CPUFREQ__ || echo __FREQ_PROCFS__
info Throughput in Gbps, latency in µs, __THREADS__ threads at __FREQ__ GHz, __STREAMS__ streams each