Testing a new benchmark machine. "The (Hetzner) EX44 Dedicated server’s hidden gem is the Intel® Core™ i5-13500 processor."

Ubuntu 24.04. CPU year 2023.

After numerous optimizations, this is an example benchmark:

It appears there are two instances of unknown disruptions even though most services have been locked down. Nothing else would be using that processor since it's isolated by cgroups. The newest intel processors may only be taking the scaling frequencies as a suggestion, and occasionally override the choice.

The benchmark command is ./bench -i:b *.json.

The following idea may or may not help, it would be an experiment. Could the benchmark executable bench itself be enhanced, by calling external shell commands, before and after each file (apache_builds, canada, citm_catalog, etc.) ?

Log output to /tmp/json-benchmarks.log

Before processing a json file.

date +'%Y/%m/%d %H:%M:%S:%3N' >> /tmp/json-benchmarks.log
echo "Starting to process canada.json with clang" >> /tmp/json-benchmarks.log
lscpu -e >> /tmp/json-benchmarks.log
top -b -n 1 | head -n 20 >> /tmp/json-benchmarks.log

(run benchmark)

After processing a json file.

date +'%Y/%m/%d %H:%M:%S' >> /tmp/json-benchmarks.log
echo "Finished processing canada.json with clang" >>  /tmp/json-benchmarks.log
lscpu -e >> /tmp/json-benchmarks.log
top -b -n 1 | head -n 20 >> /tmp/json-benchmarks.log