dovecot - Jan 2011 - size of "m.XXX" in mdbox

Hi, 

How to tune the size of each "m.xxx" file in mdbox format , in
order to optimize the ratio size/number of files ? (I can see for
instance more than 100 000 files in one directory due to very large
mailbox size) 

If such parameter exists, what is the typical value ?


Thanks 

Joan

On 6.1.2011, at 0.07, Joan Moreau wrote:
> How to tune the size of each "m.xxx" file in mdbox format , in
> order to optimize the ratio size/number of files ? (I can see for
> instance more than 100 000 files in one directory due to very large
> mailbox size) 
mdbox_rotate_size setting sets the max size of one mdbox file. There's
really no ratio setting.. It would be difficult since as more messages get added
more files would have to be merged, which would generate extra disk I/O, and
typically people care about disk I/O rather than the inode count.
> If such parameter exists, what is the typical value ?
Default is 2 MB files.

yep 

On Thu, 06 Jan 2011 13:35:40 -0500, Charles Marcus wrote: 
>
On 6.1.2011, at 0.47, Joan Moreau wrote:
>> # doveconf | grep mdbox
mdbox_preallocate_space = no mdbox_rotate_interval = 0 mdbox_rotate_size
= 2 M
> Are you certain these were set the same way when you converted?