You could try changing login processes to high-performance configuration, https://doc.dovecot.org/admin_manual/login_processes/#high-performance-mode
and see if this makes any difference
Aki
On 03/07/2024 09:40 EEST m--- via dovecot dovecot@dovecot.org wrote:
For further testing and because I could not figure the limitation, I just duplicated the dovecot nodes multiple times and loadbalanced over them with primitive roundrobin TCP.
With every increase of instances I could load the system more and got almost linear scaling until about 16 instances were reached and the system is 85-95% loaded. It yields 3100-3500 cycles per second.
Which still poses the question: What could be the reason?
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