LIST is slow for 35K mailboxes

[Blake Hudson]

Joseph Brennan wrote:
> --On Tuesday, October 9, 2007 14:19 +0100 Ian G Batten 
> <ian.batten at uk.fujitsu.com> wrote:
>
>   
>> We have ~35K mailboxes (as reported by ctl_mboxlist -d | wc -l), and
>> the LIST takes upwards of 5 minutes.   The imapd spins as much CPU as
>> it can get hold of, too.
>>     
>
>
> We have 1,117,961 mailboxes in a murder.  It takes about 1 second
> to do LIST "" *  and oddly enough it takes longer, 7 seconds, to do
> ctl_mboxlist -d | wc -l
>
> Sorry this doesn't help solve your problem but it proves it should
> be a lot faster than that.
>
> Joseph Brennan
> Columbia University Information Technology
>
>   
Could database type differences (or contention) be an issue here? What
database format are each of you using?
-Blake