[Dovecot] index file vs. memory

[Timo Sirainen]

On Feb 22, 2006, at 5:23 AM, Willem Riede wrote:

> Here are some statistics of the imap process serving a mailbox of  
> 75,000
> messages over time (~30 hours) - the first line of each group comes  
> from
> "ps alx", the second from "cat /proc/15342/maps":
>
>
> F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY         
> TIME COMMAND
> 4   500 15342  2578  15   0  94648 77740 -      S    ?           
> 1:10 imap
> 00595000-0071a000 rw-p 00595000 00:00  
> 0                                  [heap]..

> 4   500 15342  2578  15   0  96164 79520 -      S    ?           
> 6:11 imap
> 00595000-0088d000 rw-p 00595000 00:00  
> 0                                  [heap]
>
>
> During this time new mail came in, got read, and some of those  
> messages were
> deleted. You can see that as the process ages, the heap does grow.

Yes, this isn't unexpected since I'm also seeing the heap grow  
slowly. But since it's grown only 1.5MB in 30 hours (to 3MB), that  
isn't too bad of a problem.

Could you try running imap with some memory leak detection tool/ 
library, such as Valgrind or dmalloc? I know I should try that myself  
also..
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