php fpm tuning
After some testing, we have increased the standard settings on another server https://git.fairkom.net/clients/bdkj/cloud/-/issues/104#note_77173 to
pm.max_children = 120
pm.start_servers = 12
pm.min_spare_servers = 12
pm.max_spare_servers = 24
On alpstein we have
pm.max_children = 80
pm.start_servers = 10
pm.min_spare_servers = 10
pm.max_spare_servers = 20
Calculator https://spot13.com/pmcalculator/ would give more, but MuUnin shows that we have no php bottleneck. So we keep those values.