RepositoryArchiveCacheWorker seemingly increases system load when it runs once an hour
This worker is started every hour via a cronjob (Settings.cron_jobs['repository_archive_cache_worker']['cron'] ||= '0 * * * *'
to be exact) and seems to have an impact on the timings (note the peaks on every hour):
I'm not 100% sure if this worker is actually to blame but it certainly looks very suspicious.
cc @pcarranza