Hello,
While monitoring my servers' behaviour (ubuntu 12.04 with dovecot
2.1.9, with about 70000 users) I have found that lots of disk usage is
done by dovecot process (the parent process). Since lmtp, imap and pop3
connections are handle by their own process, what could be the reason of
this?
--
Angel L. Mateo Mart?nez
Secci?n de Telem?tica
?rea de Tecnolog?as de la Informaci?n
y las Comunicaciones Aplicadas (ATICA)
http://www.um.es/atica
Tfo: 868889150
Fax: 868888337
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# 2.1.9: /etc/dovecot/dovecot.conf
# OS: Linux 3.2.19um1 x86_64 Ubuntu 12.04.2 LTS
auth_cache_size = 20 M
auth_cache_ttl = 1 days
auth_master_user_separator = *
auth_verbose = yes
default_process_limit = 1024
disable_plaintext_auth = no
log_timestamp = %Y-%m-%d %H:%M:%S
login_trusted_networks = 155.54.211.176/28
mail_access_groups = vmail
mail_gid = vmail
mail_location = maildir:~/Maildir:INDEX=/var/indexes/%2Ln/%Ln
mail_plugins = quota zlib lazy_expunge acl
mail_privileged_group = mail
maildir_very_dirty_syncs = yes
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy
include variables body enotify environment mailbox date ihave
mdbox_rotate_size = 20 M
namespace {
inbox = yes
location =
prefix =
separator = .
}
namespace {
hidden = yes
list = no
location = maildir:~/Maildir/expunged
prefix = BORRADOS.
separator = .
}
namespace {
list = children
location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u
prefix = shared.%%u.
separator = .
subscriptions = no
type = shared
}
passdb {
args = /etc/dovecot/master-users
driver = passwd-file
master = yes
pass = yes
}
passdb {
args = /etc/dovecot/dovecot-ldap.conf.ext
driver = ldap
}
passdb {
args = session=yes cache_key=%Ln dovecot
driver = pam
}
plugin {
acl = vfile:/etc/dovecot/global-acls:cache_secs=3600
lazy_expunge = BORRADOS.
quota = dict:User quota::file:%h/Maildir/dovecot.quota
quota_rule = *:storage=10G
quota_rule2 = Trash:storage=+1G
sieve = ~/.dovecot.sieve
sieve_dir = ~/sieve
sieve_max_redirects = 15
zlib_save = gz
zlib_save_level = 6
}
postmaster_address = postmaster at um.es
protocols = imap pop3 lmtp sieve
service anvil {
client_limit = 3075
}
service auth {
client_limit = 4096
unix_listener auth-userdb {
mode = 0777
}
}
service doveadm {
inet_listener {
port = 24245
}
}
service imap {
process_limit = 5120
process_min_avail = 6
vsz_limit = 512 M
}
service ipc {
unix_listener ipc {
user = dovecot
}
}
service lmtp {
inet_listener lmtp {
port = 24
}
process_min_avail = 10
vsz_limit = 512 M
}
service pop3 {
process_min_avail = 6
}
ssl = no
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
driver = prefetch
}
userdb {
args = /etc/dovecot/dovecot-ldap.conf.ext
driver = ldap
}
protocol lda {
mail_plugins = quota zlib lazy_expunge acl sieve
}
protocol imap {
mail_plugins = quota zlib lazy_expunge acl imap_quota imap_acl
}
protocol lmtp {
mail_plugins = quota zlib lazy_expunge acl sieve
}
protocol pop3 {
pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, in=%i, out=%o
}
local 155.54.211.160/27/27 {
doveadm_password = <password>
}
Am 06.03.2013 13:15, schrieb Angel L. Mateo:> Hello, > > While monitoring my servers' behaviour (ubuntu 12.04 with dovecot > 2.1.9, with about 70000 users) I have found that lots of disk usage is > done by dovecot process (the parent process). Since lmtp, imap and pop3 > connections are handle by their own process, what could be the reason of > this? >maildir may no be optimal for such high amount of users, use i.e mdbox http://wiki2.dovecot.org/MailboxFormat/dbox Best Regards MfG Robert Schetterer -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstra?e 15, 81669 M?nchen Sitz der Gesellschaft: M?nchen, Amtsgericht M?nchen: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Joerg Heidrich