Hi
The first run of indexing on a large existing mailbox is indeed slow,
and I would run "doveadm index -A -q \*" before putting the system in
production. Besides the Ram disk, what kind of solution would you suggest ?
On 2019-12-10 19:28, Wojciech Puchar via dovecot wrote:

Where do write ops take place?

to the xapian index  subdirectory

Maybe mount that path to a RAM disk rather than looking for anorher solution.
not a solution for a problem but workaround

Am 10.12.2019 um 15:50 schrieb Wojciech Puchar via dovecot 
<dovecot@dovecot.org>:

what FTP module should i use instead of squat that is probably no longer 
supported or no longer at all?

i want to upgrade my dovecot installation. it currently uses squat but i found 
it often crashes on FTS on large mailboxes.

i found "xapian" addon for dovecot but while it works excellent AFTER database 
is created, i found it need like 20 or so minutes to index less than 10GB of mails and 
while doing this - generate many tens of megabytes/s constant write traffic on it's 
database files.

Excellent way of killing SSD.

something must be broken.

my config is

plugin {
plugin = fts fts_xapian

fts = xapian
fts_xapian = partial=2 full=20 verbose=0

fts_autoindex = yes
fts_enforced = yes

#       fts_autoindex_exclude = \Junk
#       fts_autoindex_exclude2 = \Trash
}

any ideas?

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