outdated link to performance report in Kea ARM
in section 8.2.27. Multi-Threading Settings in Different Backends we have a link to perf report and it's https://jenkins.isc.org/job/kea-dev/job/performance/KeaPerformanceReport/
When new reports-kea page will be operational this should be updated.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information