Hello,
I tested the suggestion to decrease the service_count and the accounts
stopped logging in, then I gradually increased it to 500, and now it's
working. But the dovecot/config processes are still being created, there
has been no change for the better.
Now I have an error constantly appearing in the mail.err file
Aug 15 14:19:34 box6 dovecot: imap(USER_NAME): Error: Error reading
configuration: read(/run/dovecot/config) failed: read(size=8192) failed:
Interrupted system call - Also failed to read config by executing
doveconf: /run/dovecot/config is a UNIX socket (path is from CONFIG_FILE
environment)
Aug 15 14:19:34 box6 dovecot: imap(USER_NAME): Error: Error reading
configuration: read(/run/dovecot/config) failed: read(size=8192) failed:
Interrupted system call - Also failed to read config by executing
doveconf: /run/dovecot/config is a UNIX socket (path is from CONFIG_FILE
environment)
Aug 15 14:19:34 box6 dovecot: imap(USER_NAME): Error: Error reading
configuration: read(/run/dovecot/config) failed: read(size=8192) failed:
Interrupted system call - Also failed to read config by executing
doveconf: /run/dovecot/config is a UNIX socket (path is from CONFIG_FILE
environment)
On 14/08/2022 22:24, John Stoffel wrote:
"filipe@digirati" == filipe@digirati com br <fil...@digirati.com.br> writes:
filipe@digirati> I'm having strange behavior in dovecot 2.3.16.
filipe@digirati> It's opening dozens of dovecot/config process and consuming
all server
filipe@digirati> memory. Normally each process consumes between 700Mb and 1Gb
of ram.
filipe@digirati> Would anyone have an idea about this?
filipe@digirati> service config {
filipe@digirati> vsz_limit = 2048M
filipe@digirati> idle_kill = 60s
filipe@digirati> service_count = 1024
filipe@digirati> }
I wonder why you have the service count so high? I'd drop it down, or
do you really have 1025 connections in 60 seconds?
From the docs:
service_count
Number of client connections to handle until the process kills
itself. 0 means unlimited. 1 means only a single connection is handled
until the process is stopped - this is the most secure choice since
there’s no way for one connection’s state to leak to the next one. For
better performance this can be set higher, but ideally not unlimited
since more complex services can have small memory leaks and/or memory
fragmentation and the process should get restarted eventually. For
example 100..1000 can be good values.
So maybe drop it down to 100 for now and see how that works for you.
filipe@digirati> pstree
filipe@digirati> systemd─┬─ModemManager───2*[{ModemManager}]
filipe@digirati> ├─agetty
filipe@digirati> ├─cron
filipe@digirati> ├─dbus-daemon
filipe@digirati> ├─dovecot─┬─anvil
filipe@digirati> │ ├─6*[auth]
filipe@digirati> │ ├─46*[config]
filipe@digirati> │ ├─1212*[imap]
filipe@digirati> │ ├─155*[imap-login]
filipe@digirati> │ ├─12*[lmtp]
filipe@digirati> │ ├─38*[log]
filipe@digirati> │ ├─10*[managesieve]
filipe@digirati> │ ├─19*[pop3]
filipe@digirati> │ ├─3*[pop3-login]
filipe@digirati> │ └─18*[stats]
filipe@digirati> root 45831 0.0 1.1 774688 752732 ? S 09:31
0:31
filipe@digirati> dovecot/config
filipe@digirati> root 388792 0.0 1.1 775060 753276 ? S 14:00
0:15
filipe@digirati> dovecot/config
filipe@digirati> root 510685 0.0 1.1 775384 753604 ? S 15:06
0:20
filipe@digirati> dovecot/config
filipe@digirati> root 675638 0.0 1.1 775348 753620 ? S 16:56
0:15
filipe@digirati> dovecot/config
filipe@digirati> root 795375 0.0 1.1 775460 753516 ? S 18:03
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 798754 0.2 1.1 775592 753712 ? S 18:05
0:30
filipe@digirati> dovecot/config
filipe@digirati> root 1082696 0.2 1.1 774892 753216 ? S 21:10
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 1098433 0.4 1.1 774924 753244 ? S 21:33
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 1109255 0.9 1.1 774924 753344 ? S 21:50
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 1112976 2.0 1.1 774956 753528 ? S 21:57
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 1114137 3.0 1.1 775028 753308 ? S 21:59
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 1115382 5.4 1.1 774924 753496 ? S 22:01
0:06
filipe@digirati> dovecot/config
filipe@digirati> root 1883627 0.0 1.1 759120 728832 ? S Aug11
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 1889705 0.0 1.8 1251460 1221872 ? S Aug11
0:11
filipe@digirati> dovecot/config
filipe@digirati> root 1895022 0.0 1.8 1253280 1224284 ? S Aug11
0:11
filipe@digirati> dovecot/config
filipe@digirati> root 1900690 0.0 1.8 1255684 1227528 ? S Aug11
0:12
filipe@digirati> dovecot/config
filipe@digirati> root 1905648 0.0 1.8 1257880 1229912 ? S Aug11
0:12
filipe@digirati> dovecot/config
filipe@digirati> root 1910857 0.0 1.8 1259156 1231552 ? S Aug11
0:12
filipe@digirati> dovecot/config
filipe@digirati> root 1914332 0.0 1.1 764328 736552 ? S Aug11
0:20
filipe@digirati> dovecot/config
filipe@digirati> root 2343896 0.0 1.8 1259472 1231516 ? S Aug11
0:12
filipe@digirati> dovecot/config
filipe@digirati> root 2346351 0.0 1.8 1259472 1231836 ? S Aug11
0:13
filipe@digirati> dovecot/config
filipe@digirati> root 2348559 0.0 1.1 764704 736440 ? S Aug11
0:14
filipe@digirati> dovecot/config
filipe@digirati> root 2445701 0.0 1.1 764276 736540 ? S Aug11
0:19
filipe@digirati> dovecot/config
filipe@digirati> root 2572525 0.0 1.1 764640 736880 ? S Aug11
0:18
filipe@digirati> dovecot/config
filipe@digirati> root 2734251 0.0 1.1 764776 737696 ? S Aug11
0:08
filipe@digirati> dovecot/config
filipe@digirati> root 2740980 0.0 1.1 764768 737244 ? S Aug11
0:17
filipe@digirati> dovecot/config
filipe@digirati> root 2899925 0.0 1.1 764624 737760 ? S Aug11
0:43
filipe@digirati> dovecot/config
filipe@digirati> root 3517063 0.0 1.1 764984 738004 ? S Aug11
0:09
filipe@digirati> dovecot/config
filipe@digirati> root 3541465 0.0 1.1 765224 738756 ? S Aug11
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 3545589 0.0 1.1 766452 740408 ? S Aug11
0:06
filipe@digirati> dovecot/config
filipe@digirati> root 3549259 0.0 1.1 766796 741048 ? S Aug11
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 3553902 0.0 1.1 767812 742284 ? S Aug11
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 3558080 0.0 1.1 768440 743524 ? S Aug11
0:08
filipe@digirati> dovecot/config
filipe@digirati> root 3562091 0.0 1.1 769224 744424 ? S Aug11
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 3568721 0.0 1.1 769388 744888 ? S Aug11
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 3573024 0.0 1.1 770048 745904 ? S Aug11
0:08
filipe@digirati> dovecot/config
filipe@digirati> root 3578416 0.0 1.1 770836 746736 ? S Aug11
0:06
filipe@digirati> dovecot/config
filipe@digirati> root 3581765 0.0 1.1 771948 748492 ? S Aug11
0:06
filipe@digirati> dovecot/config
filipe@digirati> root 3585837 0.0 1.1 772828 749860 ? S Aug11
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 3590276 0.0 1.1 773560 750520 ? S Aug11
0:07
filipe@digirati> dovecot/config
filipe@digirati> root 3594640 0.0 1.1 774612 752552 ? S Aug11
0:08
filipe@digirati> dovecot/config
filipe@digirati> root 3597417 0.0 1.1 774968 753076 ? S Aug11
0:35
filipe@digirati> dovecot/config
filipe@digirati> root 4116314 0.0 1.9 1280496 1258580 ? S 05:31
0:13
filipe@digirati> dovecot/config
filipe@digirati> root 4118115 0.0 1.1 774688 752556 ? S 05:33
0:16
filipe@digirati> dovecot/config
