主题: 关于dovecot的default_process_limit和default_client_limit
==== 必填信息。没有填写将不予回复 ====
- iRedMail 版本号：0.8.1（dovecot 2.0.18-1）
- 使用哪个数据库存储用户帐号（OpenLDAP，MySQL，PostgreSQL）：mysql
- 使用的 Linux/BSD 发行版名称及版本号：CentOS 6.0 x64
- 与您的问题相关的日志信息：
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刚才在网上查找dovecot里关于imap-login的参数，在这里 http://comments.gmane.org/gmane.mail.imap.dovecot/70948 找到这么一段对话：
> So I changed it again:
]]>
> default_process_limit = 128
> default_client_limit = 512
]]>
> And now it seems to be fine. But I'm mystified because what you say is
> the case on your system, that is, that the process limit needs to be
> greater than the client limit, is what I would expect: wouldn't each
> client require at least one process?
no, 512x128 = 65536 connections
each process can serve default_client_limit clients当我这样设置，dovecot服务可以启动：
service imap-login {
process_limit = 350
}
default_client_limit = 1003当我这样设置：
service imap-login {
process_limit = 400
}
default_client_limit = 1000重启dovecot服务的时候会提示出错：
Starting Dovecot Imap: doveconf: Warning: service anvil { client_limit=1000 } is lower than required under max. load (1003)
Warning: service anvil { client_limit=1000 } is lower than required under max. load (1003)想请教imap-login里的process_limit和client_limit是啥关系？如何取值才更合理？