Re: >1024 connections in slapd / select->poll

[Wesley D Craig <wes@umich.edu>]

On 17 Nov 2004, at 22:02, David Boreham wrote:
> > > How many forwarding agents are there ?
> > 8, right now.  They accept something like 1.9M messages per day.  I 
> > should note that we've written our own MTA, to better integrate with 
> > LDAP.
>
> So on average each MTA has 250 LDAP connections open , worst case ?  I 
> guess I'm curious as to why ??
>
> What's the purpose of having that degree of concurrency ?

In fact, we've currently got the MTA (it's called simta) set to limit 
itself to 250 inbound SMTP connections.  We monitor the SMTP interface 
(and the LDAP interface) to ensure that it remains responsive.  Our 
customer expectation is that when email is sent, it will arrive at the 
UMich recipients mailbox within seconds.  In short, the concurrency 
reflects how our users send & receive email.

:wes