[knot-dns-users] About the signing performance

Dear KNOT team, We're now considering an update on our zone signer and KNOT DNS seems to be a good choice. I looked through your documentation and do not see the performace data about signing big zones. When the zone has about 10 millions entries , how long will it take for KNOT DNS to sign it completely? I'll appreciate it if you can give me a feedback. Best Regards! Gao