[Dovecot] Dovecot 2.0.9: Thunderbird 3.1.9: Very slow while open sent folder with many (4k>) mails

[Denny Schierz]

hi,

one customer told us, that he has performance problem in his Thunderbird
3.1.9, while open his sent folder, which has round about 4000 mails in
it, and 20k in his Inbox. For example TB, tries to sync the sent-folder
list (over SSL) from the sent folder for now over 15min. 

In the log, I can't see any strange things, so for me, Dovecot works ok.

Maybe, I should use better cache options?

Now he tries to move many messages to separate folders, but thats also a
bit slow. So, is it a TB problem, with so many messages?


Our config:

auth_anonymous_username = anonymous
auth_cache_negative_ttl = 1 hours
auth_cache_size = 0
auth_cache_ttl = 1 hours
auth_debug = no
auth_debug_passwords = no
auth_default_realm = 
auth_failure_delay = 2 secs
auth_first_valid_uid = 500
auth_gssapi_hostname = 
auth_krb5_keytab = 
auth_last_valid_uid = 0
auth_master_user_separator = 
auth_mechanisms = plain
auth_realms = 
auth_socket_path = auth-userdb
auth_ssl_require_client_cert = no
auth_ssl_username_from_cert = no
auth_use_winbind = no
auth_username_chars =
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
auth_username_format = %Lu
auth_username_translation = 
auth_verbose = no
auth_verbose_passwords = no
auth_winbind_helper_path = /usr/bin/ntlm_auth
auth_worker_max_count = 30
base_dir = /var/run/dovecot
config_cache_size = 1 M
debug_log_path = /var/log/dovecot-debug.log
default_client_limit = 1000
default_idle_kill = 60
default_internal_user = dovecot
default_login_user = dovenull
default_process_limit = 100
default_vsz_limit = 256 M
deliver_log_format = msgid=%m: %$
dict_db_config = 
director_doveadm_port = 0
director_mail_servers = 
director_servers = 
director_user_expire = 15 mins
disable_plaintext_auth = no
dotlock_use_excl = no
doveadm_socket_path = doveadm-server
doveadm_worker_count = 0
first_valid_gid = 1
first_valid_uid = 500
hostname = xfire05.rbg.informatik.tu-darmstadt.de
imap_capability = 
imap_client_workarounds = 
imap_id_log = 
imap_id_send = 
imap_idle_notify_interval = 2 mins
imap_logout_format = bytes=%i/%o
imap_max_line_length = 64 k
info_log_path = /var/log/dovecot.log
last_valid_gid = 0
last_valid_uid = 0
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = no
lda_original_recipient_header = 
libexec_dir = /usr/local/dovecot/2.0.9/libexec/dovecot
listen = *, ::
lmtp_proxy = no
lmtp_save_to_detail_mailbox = no
lock_method = fcntl
log_path = syslog
log_timestamp = "%b %d %H:%M:%S "
login_access_sockets = 
login_greeting = I'm alive
login_log_format = %$: %s
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c
login_trusted_networks = 
mail_access_groups = 
mail_attachment_dir = 
mail_attachment_fs = sis posix
mail_attachment_hash = %{sha1}
mail_attachment_min_size = 128 k
mail_cache_fields = flags
mail_cache_min_mail_count = 0
mail_chroot = 
mail_debug = no
mail_fsync = optimized
mail_full_filesystem_access = no
mail_gid = vmail
mail_home = /imap/spool/%d/%1n/%n
mail_location = maildir:/imap/spool/%d/%1n/%n:INDEX=/imap/spool/%
d/indexes/%1n/%n
mail_log_prefix = "%s(%u): "
mail_max_keyword_length = 50
mail_max_lock_timeout = 0
mail_max_userip_connections = 10
mail_never_cache_fields = imap.envelope
mail_nfs_index = no
mail_nfs_storage = no
mail_plugin_dir = /usr/local/dovecot/dovecot2/lib/dovecot/
mail_plugins = acl quota
mail_privileged_group = vmail
mail_save_crlf = no
mail_temp_dir = /imap/spool/tmp
mail_uid = vmail
mailbox_idle_check_interval = 30 secs
mailbox_list_index_disable = no
maildir_copy_with_hardlinks = yes
maildir_stat_dirs = no
maildir_very_dirty_syncs = no
managesieve_client_workarounds = 
managesieve_implementation_string = Dovecot Pigeonhole
managesieve_logout_format = bytes=%i/%o
managesieve_max_compile_errors = 5
managesieve_max_line_length = 65536
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 imapflags
master_user_separator = 
mbox_dirty_syncs = yes
mbox_dotlock_change_timeout = 2 mins
mbox_lazy_writes = yes
mbox_lock_timeout = 5 mins
mbox_min_index_size = 0
mbox_read_locks = fcntl
mbox_very_dirty_syncs = no
mbox_write_locks = dotlock fcntl
mdbox_preallocate_space = no
mdbox_rotate_interval = 0
mdbox_rotate_size = 2 M
mmap_disable = no
namespace {
  hidden = no
  inbox = yes
  list = yes
  location = 
  prefix = 
  separator = /
  subscriptions = yes
  type = private
}
namespace {
  hidden = no
  inbox = no
  list = yes
  location = maildir:/imap/spool/public
  prefix = public/
  separator = /
  subscriptions = no
  type = public
}
passdb {
  args
= /usr/local/dovecot/dovecot2/etc/dovecot/conf.d/dovecot-ldap.conf.ext
  deny = no
  driver = ldap
  master = no
  pass = no
}
plugin {
  acl = vfile:/imap/spool/%d/acl
  autocreate = Sent
  autocreate2 = Drafts
  autocreate3 = Trash
  autocreate4 = Spam
  autosubscribe = Sent
  autosubscribe2 = Drafts
  autosubscribe3 = Trash
  autosubscribe4 = Spam
  quota = maildir:User quota
  quota_rule2 = Trash:storage=+10%%
  quota_rule3 = Spam:storage=+20%%
  quota_warning = storage=80%
% /usr/local/dovecot/dovecot/bin/quota-warning.sh 80
  quota_warning2 = storage=90%
% /usr/local/dovecot/dovecot/bin/quota-warning.sh 90
  quota_warning3 = storage=95%
% /usr/local/dovecot/dovecot/bin/quota-warning.sh 95
  sieve = /imap/spool/%d/%1n/%n/sieve/default.sieve
  sieve_dir = /imap/spool/%d/%1n/%n/sieve
  sieve_extensions = +imapflags
  trash = /usr/local/dovecot/dovecot/etc/conf.d/dovecot-trash.conf
}
pop3_client_workarounds = 
pop3_enable_last = no
pop3_fast_size_lookups = no
pop3_lock_session = no
pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s
pop3_no_flag_updates = no
pop3_reuse_xuidl = no
pop3_save_uidl = no
pop3_uidl_format = %08Xu%08Xv
postmaster_address = postmaster at rbg.informatik.tu-darmstadt.de
protocols = imap pop3 lmtp sieve
quota_full_tempfail = no
recipient_delimiter = +
rejection_reason = Your message to <%t> was automatically rejected:%n%r
rejection_subject = Rejected: %s
sendmail_path = /usr/sbin/sendmail
service anvil {
  chroot = empty
  client_limit = 0
  drop_priv_before_exec = no
  executable = anvil
  extra_groups = 
  group = 
  idle_kill = 4294967295 secs
  privileged_group = 
  process_limit = 1
  process_min_avail = 1
  protocol = 
  service_count = 0
  type = anvil
  unix_listener anvil-auth-penalty {
    group = 
    mode = 0600
    user = 
  }
  unix_listener anvil {
    group = 
    mode = 0600
    user = 
  }
  user = $default_internal_user
  vsz_limit = 18446744073709551615 B
}
service auth-worker {
  chroot = 
  client_limit = 1
  drop_priv_before_exec = no
  executable = auth -w
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = 
  service_count = 1
  type = 
  unix_listener auth-worker {
    group = 
    mode = 0600
    user = $default_internal_user
  }
  user = 
  vsz_limit = 18446744073709551615 B
}
service auth {
  chroot = 
  client_limit = 4096
  drop_priv_before_exec = no
  executable = auth
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 1
  process_min_avail = 0
  protocol = 
  service_count = 0
  type = 
  unix_listener /var/spool/postfix/private/auth {
    group = postdrop
    mode = 0600
    user = postfix
  }
  unix_listener auth-client {
    group = 
    mode = 0600
    user = 
  }
  unix_listener auth-login {
    group = 
    mode = 0600
    user = $default_internal_user
  }
  unix_listener auth-master {
    group = 
    mode = 0600
    user = 
  }
  unix_listener auth-userdb {
    group = 
    mode = 0600
    user = 
  }
  unix_listener login/login {
    group = 
    mode = 0666
    user = 
  }
  user = $default_internal_user
  vsz_limit = 18446744073709551615 B
}
service config {
  chroot = 
  client_limit = 0
  drop_priv_before_exec = no
  executable = config
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = 
  service_count = 0
  type = config
  unix_listener config {
    group = 
    mode = 0600
    user = 
  }
  user = 
  vsz_limit = 18446744073709551615 B
}
service dict {
  chroot = 
  client_limit = 1
  drop_priv_before_exec = no
  executable = dict
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = 
  service_count = 0
  type = 
  unix_listener dict {
    group = 
    mode = 0600
    user = 
  }
  user = $default_internal_user
  vsz_limit = 18446744073709551615 B
}
service director {
  chroot = 
  client_limit = 0
  drop_priv_before_exec = no
  executable = director
  extra_groups = 
  fifo_listener login/proxy-notify {
    group = 
    mode = 00
    user = 
  }
  group = 
  idle_kill = 4294967295 secs
  inet_listener {
    address = 
    port = 0
    ssl = no
  }
  privileged_group = 
  process_limit = 1
  process_min_avail = 0
  protocol = 
  service_count = 0
  type = 
  unix_listener director-admin {
    group = 
    mode = 0600
    user = 
  }
  unix_listener director-userdb {
    group = 
    mode = 0600
    user = 
  }
  unix_listener login/director {
    group = 
    mode = 00
    user = 
  }
  user = $default_internal_user
  vsz_limit = 18446744073709551615 B
}
service dns_client {
  chroot = 
  client_limit = 1
  drop_priv_before_exec = no
  executable = dns-client
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = 
  service_count = 0
  type = 
  unix_listener dns-client {
    group = 
    mode = 0666
    user = 
  }
  unix_listener login/dns-client {
    group = 
    mode = 0666
    user = 
  }
  user = $default_internal_user
  vsz_limit = 18446744073709551615 B
}
service doveadm {
  chroot = 
  client_limit = 1
  drop_priv_before_exec = no
  executable = doveadm-server
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = 
  service_count = 1
  type = 
  unix_listener doveadm-server {
    group = 
    mode = 0600
    user = 
  }
  user = 
  vsz_limit = 18446744073709551615 B
}
service imap-login {
  chroot = login
  client_limit = 0
  drop_priv_before_exec = no
  executable = imap-login
  extra_groups = 
  group = 
  idle_kill = 0
  inet_listener imap {
    address = 
    port = 143
    ssl = no
  }
  inet_listener imaps {
    address = 
    port = 993
    ssl = yes
  }
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = imap
  service_count = 1
  type = login
  user = $default_login_user
  vsz_limit = 64 M
}
service imap {
  chroot = 
  client_limit = 1
  drop_priv_before_exec = no
  executable = imap
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 1024
  process_min_avail = 0
  protocol = imap
  service_count = 1
  type = 
  unix_listener login/imap {
    group = 
    mode = 0666
    user = 
  }
  user = 
  vsz_limit = 18446744073709551615 B
}
service lmtp {
  chroot = 
  client_limit = 0
  drop_priv_before_exec = no
  executable = lmtp
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = lmtp
  service_count = 0
  type = 
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postdrop
    mode = 0666
    user = postfix
  }
  unix_listener lmtp {
    group = 
    mode = 0666
    user = 
  }
  user = 
  vsz_limit = 0
}
service log {
  chroot = 
  client_limit = 0
  drop_priv_before_exec = no
  executable = log
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 1
  process_min_avail = 0
  protocol = 
  service_count = 0
  type = log
  user = 
  vsz_limit = 18446744073709551615 B
}
service managesieve-login {
  chroot = login
  client_limit = 0
  drop_priv_before_exec = no
  executable = managesieve-login
  extra_groups = 
  group = 
  idle_kill = 0
  inet_listener sieve {
    address = 
    port = 4190
    ssl = no
  }
  inet_listener sieve_deprecated {
    address = 
    port = 2001
    ssl = no
  }
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = sieve
  service_count = 1
  type = login
  user = $default_login_user
  vsz_limit = 64 M
}
service managesieve {
  chroot = 
  client_limit = 1
  drop_priv_before_exec = no
  executable = managesieve
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = sieve
  service_count = 1
  type = 
  unix_listener login/sieve {
    group = 
    mode = 0666
    user = 
  }
  user = 
  vsz_limit = 18446744073709551615 B
}
service pop3-login {
  chroot = login
  client_limit = 0
  drop_priv_before_exec = no
  executable = pop3-login
  extra_groups = 
  group = 
  idle_kill = 0
  inet_listener pop3 {
    address = 
    port = 110
    ssl = no
  }
  inet_listener pop3s {
    address = 
    port = 995
    ssl = yes
  }
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = pop3
  service_count = 1
  type = login
  user = $default_login_user
  vsz_limit = 64 M
}
service pop3 {
  chroot = 
  client_limit = 1
  drop_priv_before_exec = no
  executable = pop3
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 1024
  process_min_avail = 0
  protocol = pop3
  service_count = 1
  type = 
  unix_listener login/pop3 {
    group = 
    mode = 0666
    user = 
  }
  user = 
  vsz_limit = 18446744073709551615 B
}
service ssl-params {
  chroot = 
  client_limit = 0
  drop_priv_before_exec = no
  executable = ssl-params
  extra_groups = 
  group = 
  idle_kill = 0
  privileged_group = 
  process_limit = 0
  process_min_avail = 0
  protocol = 
  service_count = 0
  type = startup
  unix_listener login/ssl-params {
    group = 
    mode = 0666
    user = 
  }
  user = 
  vsz_limit = 18446744073709551615 B
}
shutdown_clients = yes
ssl = yes
ssl_ca = 
ssl_cert = </usr/local/dovecot/dovecot2/etc/dovecot/ssl/imapd.pem
ssl_cert_username_field = commonName
ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL
ssl_key = </usr/local/dovecot/dovecot2/etc/dovecot/ssl/imapd.pem
ssl_key_password = 
ssl_parameters_file = ssl-parameters.dat
ssl_parameters_regenerate = 168
ssl_verify_client_cert = no
syslog_facility = mail
userdb {
  args
= /usr/local/dovecot/dovecot2/etc/dovecot/conf.d/dovecot-ldap.conf.ext
  driver = ldap
}
valid_chroot_dirs = 
verbose_auth = no
verbose_proctitle = yes
verbose_ssl = no
version_ignore = no
protocol lda {
  mail_plugins = acl quota sieve quota
}
protocol imap {
  imap_idle_notify_interval = 2 mins
  mail_max_userip_connections = 10
  mail_plugins = acl quota imap_acl imap_quota mail_log notify
autocreate trash listescape
}
protocol lmtp {
  mail_plugins = acl quota sieve
}
protocol pop3 {
  mail_plugins = acl quota quota
  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
  pop3_reuse_xuidl = yes
}

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 198 bytes
Desc: This is a digitally signed message part
Url : http://dovecot.org/pipermail/dovecot/attachments/20110324/d474dbe4/attachment-0001.bin