search for: min_available_processes

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2023 Jan 26
2
How do you scale dovecot for good performance with Roundcube webmailer in front? (hitting limits without exhausting resources)
...performance without mails jumps to 7700 req/s. Testing is done with 4 JMeter-servers and one client.? My setup is a Dovecot with MySQL (Percona XtraDB) backend. Mails are encrypted with mail_crypt and EC keys. Authentication is done in parallel (auth_cache_verify_with_workers=yes). Where possible min_available_processes have been set equal to the threads available on the Dovecot machine (64). Hardware is a 64 thread Xeon CPU at 2.10 GHz, 96 GB RAM, SSDs as backing storage IOPS read 40000/write 13000. What settings do you recommend and how was your experience with Roundcube and its performance in general (what sh...