CPU and RAM percentage of usage metrics

I need to collect the percentage of usage of CPU and RAM.

I've seen from the README that for Linux these metrics are available with the class ProcessCollector. Indeed I see something just starting the server with start_http_server(8000).

Then, by connecting to localhost:8000, I see an output like this:

# HELP python_gc_objects_collected_total Objects collected during gc
# TYPE python_gc_objects_collected_total counter
python_gc_objects_collected_total{generation="0"} 618.0
python_gc_objects_collected_total{generation="1"} 620.0
python_gc_objects_collected_total{generation="2"} 0.0
# HELP python_gc_objects_uncollectable_total Uncollectable object found during GC
# TYPE python_gc_objects_uncollectable_total counter
python_gc_objects_uncollectable_total{generation="0"} 0.0
python_gc_objects_uncollectable_total{generation="1"} 0.0
python_gc_objects_uncollectable_total{generation="2"} 0.0
# HELP python_gc_collections_total Number of times this generation was collected
# TYPE python_gc_collections_total counter
python_gc_collections_total{generation="0"} 329.0
python_gc_collections_total{generation="1"} 29.0
python_gc_collections_total{generation="2"} 2.0
# HELP python_info Python platform information
# TYPE python_info gauge
python_info{implementation="CPython",major="3",minor="7",patchlevel="4",version="3.7.4"} 1.0
# HELP process_virtual_memory_bytes Virtual memory size in bytes.
# TYPE process_virtual_memory_bytes gauge
process_virtual_memory_bytes 2.096193536e+09
# HELP process_resident_memory_bytes Resident memory size in bytes.
# TYPE process_resident_memory_bytes gauge
process_resident_memory_bytes 2.752512e+08
# HELP process_start_time_seconds Start time of the process since unix epoch in seconds.
# TYPE process_start_time_seconds gauge
process_start_time_seconds 1.6355184461e+09
# HELP process_cpu_seconds_total Total user and system CPU time spent in seconds.
# TYPE process_cpu_seconds_total counter
process_cpu_seconds_total 3.6799999999999997
# HELP process_open_fds Number of open file descriptors.
# TYPE process_open_fds gauge
process_open_fds 7.0
# HELP process_max_fds Maximum number of open file descriptors.
# TYPE process_max_fds gauge
process_max_fds 1.048576e+06

How can I customize this output in order to have RAM, CPU (and eventually GPU) percentage of usage?

For example, I see process_cpu_seconds_total 3.6799999999999997 but I'd like to have something like process_cpu_perc_total 50%. The same for the RAM.

Commencez par la documentation de ProcessCollector dans le README et les métriques process_* présentées dans l’issue. Déterminez si le projet doit ajouter des métriques en pourcentage pour le CPU et la RAM, si la prise en charge du GPU entre dans le périmètre et comment les mesures doivent être définies ; l’issue ne mentionne aucun fichier, test ni critère d’achèvement.