dovecot/config processes open, and consuming all memory
I'm having strange behavior in dovecot 2.3.16. It's opening dozens of dovecot/config process and consuming all server memory. Normally each process consumes between 700Mb and 1Gb of ram.
Would anyone have an idea about this?
service config { vsz_limit = 2048M idle_kill = 60s service_count = 1024 }
pstree systemd─┬─ModemManager───2*[{ModemManager}] ├─agetty ├─cron ├─dbus-daemon ├─dovecot─┬─anvil │ ├─6*[auth] │ ├─46*[config] │ ├─1212*[imap] │ ├─155*[imap-login] │ ├─12*[lmtp] │ ├─38*[log] │ ├─10*[managesieve] │ ├─19*[pop3] │ ├─3*[pop3-login] │ └─18*[stats]
root 45831 0.0 1.1 774688 752732 ? S 09:31 0:31 dovecot/config root 388792 0.0 1.1 775060 753276 ? S 14:00 0:15 dovecot/config root 510685 0.0 1.1 775384 753604 ? S 15:06 0:20 dovecot/config root 675638 0.0 1.1 775348 753620 ? S 16:56 0:15 dovecot/config root 795375 0.0 1.1 775460 753516 ? S 18:03 0:07 dovecot/config root 798754 0.2 1.1 775592 753712 ? S 18:05 0:30 dovecot/config root 1082696 0.2 1.1 774892 753216 ? S 21:10 0:07 dovecot/config root 1098433 0.4 1.1 774924 753244 ? S 21:33 0:07 dovecot/config root 1109255 0.9 1.1 774924 753344 ? S 21:50 0:07 dovecot/config root 1112976 2.0 1.1 774956 753528 ? S 21:57 0:07 dovecot/config root 1114137 3.0 1.1 775028 753308 ? S 21:59 0:07 dovecot/config root 1115382 5.4 1.1 774924 753496 ? S 22:01 0:06 dovecot/config root 1883627 0.0 1.1 759120 728832 ? S Aug11 0:07 dovecot/config root 1889705 0.0 1.8 1251460 1221872 ? S Aug11 0:11 dovecot/config root 1895022 0.0 1.8 1253280 1224284 ? S Aug11 0:11 dovecot/config root 1900690 0.0 1.8 1255684 1227528 ? S Aug11 0:12 dovecot/config root 1905648 0.0 1.8 1257880 1229912 ? S Aug11 0:12 dovecot/config root 1910857 0.0 1.8 1259156 1231552 ? S Aug11 0:12 dovecot/config root 1914332 0.0 1.1 764328 736552 ? S Aug11 0:20 dovecot/config root 2343896 0.0 1.8 1259472 1231516 ? S Aug11 0:12 dovecot/config root 2346351 0.0 1.8 1259472 1231836 ? S Aug11 0:13 dovecot/config root 2348559 0.0 1.1 764704 736440 ? S Aug11 0:14 dovecot/config root 2445701 0.0 1.1 764276 736540 ? S Aug11 0:19 dovecot/config root 2572525 0.0 1.1 764640 736880 ? S Aug11 0:18 dovecot/config root 2734251 0.0 1.1 764776 737696 ? S Aug11 0:08 dovecot/config root 2740980 0.0 1.1 764768 737244 ? S Aug11 0:17 dovecot/config root 2899925 0.0 1.1 764624 737760 ? S Aug11 0:43 dovecot/config root 3517063 0.0 1.1 764984 738004 ? S Aug11 0:09 dovecot/config root 3541465 0.0 1.1 765224 738756 ? S Aug11 0:07 dovecot/config root 3545589 0.0 1.1 766452 740408 ? S Aug11 0:06 dovecot/config root 3549259 0.0 1.1 766796 741048 ? S Aug11 0:07 dovecot/config root 3553902 0.0 1.1 767812 742284 ? S Aug11 0:07 dovecot/config root 3558080 0.0 1.1 768440 743524 ? S Aug11 0:08 dovecot/config root 3562091 0.0 1.1 769224 744424 ? S Aug11 0:07 dovecot/config root 3568721 0.0 1.1 769388 744888 ? S Aug11 0:07 dovecot/config root 3573024 0.0 1.1 770048 745904 ? S Aug11 0:08 dovecot/config root 3578416 0.0 1.1 770836 746736 ? S Aug11 0:06 dovecot/config root 3581765 0.0 1.1 771948 748492 ? S Aug11 0:06 dovecot/config root 3585837 0.0 1.1 772828 749860 ? S Aug11 0:07 dovecot/config root 3590276 0.0 1.1 773560 750520 ? S Aug11 0:07 dovecot/config root 3594640 0.0 1.1 774612 752552 ? S Aug11 0:08 dovecot/config root 3597417 0.0 1.1 774968 753076 ? S Aug11 0:35 dovecot/config root 4116314 0.0 1.9 1280496 1258580 ? S 05:31 0:13 dovecot/config root 4118115 0.0 1.1 774688 752556 ? S 05:33 0:16 dovecot/config
for what's it is worth
i am not running any vsize on the config
service config { unix_listener config { user = vmail } }
i'm just running defaults
i do use vsz_limit elsewhere main to curve the replication processes ??
never had an issue 2.3.17 / 18 / 19
never used 16 (fyi)
maybe 2048M is insufficent system wide, try increasing 10 1g ?
Happy Friday !!! Thanks - paul
Paul Kudla
Scom.ca Internet Services http://www.scom.ca 004-1009 Byron Street South Whitby, Ontario - Canada L1N 4S3
Toronto 416.642.7266 Main 1.866.411.7266 Fax 1.888.892.7266 Email paul@scom.ca
On 8/12/2022 6:06 PM, dovecot-bounces@dovecot.org wrote:
I'm having strange behavior in dovecot 2.3.16. It's opening dozens of dovecot/config process and consuming all server memory. Normally each process consumes between 700Mb and 1Gb of ram.
Would anyone have an idea about this?
service config { vsz_limit = 2048M idle_kill = 60s service_count = 1024 }
pstree systemd─┬─ModemManager───2*[{ModemManager}] ├─agetty ├─cron ├─dbus-daemon ├─dovecot─┬─anvil │ ├─6*[auth] │ ├─46*[config] │ ├─1212*[imap] │ ├─155*[imap-login] │ ├─12*[lmtp] │ ├─38*[log] │ ├─10*[managesieve] │ ├─19*[pop3] │ ├─3*[pop3-login] │ └─18*[stats]
root 45831 0.0 1.1 774688 752732 ? S 09:31 0:31 dovecot/config root 388792 0.0 1.1 775060 753276 ? S 14:00 0:15 dovecot/config root 510685 0.0 1.1 775384 753604 ? S 15:06 0:20 dovecot/config root 675638 0.0 1.1 775348 753620 ? S 16:56 0:15 dovecot/config root 795375 0.0 1.1 775460 753516 ? S 18:03 0:07 dovecot/config root 798754 0.2 1.1 775592 753712 ? S 18:05 0:30 dovecot/config root 1082696 0.2 1.1 774892 753216 ? S 21:10 0:07 dovecot/config root 1098433 0.4 1.1 774924 753244 ? S 21:33 0:07 dovecot/config root 1109255 0.9 1.1 774924 753344 ? S 21:50 0:07 dovecot/config root 1112976 2.0 1.1 774956 753528 ? S 21:57 0:07 dovecot/config root 1114137 3.0 1.1 775028 753308 ? S 21:59 0:07 dovecot/config root 1115382 5.4 1.1 774924 753496 ? S 22:01 0:06 dovecot/config root 1883627 0.0 1.1 759120 728832 ? S Aug11 0:07 dovecot/config root 1889705 0.0 1.8 1251460 1221872 ? S Aug11 0:11 dovecot/config root 1895022 0.0 1.8 1253280 1224284 ? S Aug11 0:11 dovecot/config root 1900690 0.0 1.8 1255684 1227528 ? S Aug11 0:12 dovecot/config root 1905648 0.0 1.8 1257880 1229912 ? S Aug11 0:12 dovecot/config root 1910857 0.0 1.8 1259156 1231552 ? S Aug11 0:12 dovecot/config root 1914332 0.0 1.1 764328 736552 ? S Aug11 0:20 dovecot/config root 2343896 0.0 1.8 1259472 1231516 ? S Aug11 0:12 dovecot/config root 2346351 0.0 1.8 1259472 1231836 ? S Aug11 0:13 dovecot/config root 2348559 0.0 1.1 764704 736440 ? S Aug11 0:14 dovecot/config root 2445701 0.0 1.1 764276 736540 ? S Aug11 0:19 dovecot/config root 2572525 0.0 1.1 764640 736880 ? S Aug11 0:18 dovecot/config root 2734251 0.0 1.1 764776 737696 ? S Aug11 0:08 dovecot/config root 2740980 0.0 1.1 764768 737244 ? S Aug11 0:17 dovecot/config root 2899925 0.0 1.1 764624 737760 ? S Aug11 0:43 dovecot/config root 3517063 0.0 1.1 764984 738004 ? S Aug11 0:09 dovecot/config root 3541465 0.0 1.1 765224 738756 ? S Aug11 0:07 dovecot/config root 3545589 0.0 1.1 766452 740408 ? S Aug11 0:06 dovecot/config root 3549259 0.0 1.1 766796 741048 ? S Aug11 0:07 dovecot/config root 3553902 0.0 1.1 767812 742284 ? S Aug11 0:07 dovecot/config root 3558080 0.0 1.1 768440 743524 ? S Aug11 0:08 dovecot/config root 3562091 0.0 1.1 769224 744424 ? S Aug11 0:07 dovecot/config root 3568721 0.0 1.1 769388 744888 ? S Aug11 0:07 dovecot/config root 3573024 0.0 1.1 770048 745904 ? S Aug11 0:08 dovecot/config root 3578416 0.0 1.1 770836 746736 ? S Aug11 0:06 dovecot/config root 3581765 0.0 1.1 771948 748492 ? S Aug11 0:06 dovecot/config root 3585837 0.0 1.1 772828 749860 ? S Aug11 0:07 dovecot/config root 3590276 0.0 1.1 773560 750520 ? S Aug11 0:07 dovecot/config root 3594640 0.0 1.1 774612 752552 ? S Aug11 0:08 dovecot/config root 3597417 0.0 1.1 774968 753076 ? S Aug11 0:35 dovecot/config root 4116314 0.0 1.9 1280496 1258580 ? S 05:31 0:13 dovecot/config root 4118115 0.0 1.1 774688 752556 ? S 05:33 0:16 dovecot/config
"filipe@digirati" == filipe@digirati com br filipe@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
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 filipe@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
"filipe@digirati" == filipe@digirati com br filipe@digirati.com.br writes:
filipe@digirati> I tested the suggestion to decrease the service_count and the accounts filipe@digirati> stopped logging in, then I gradually increased it to 500, and now it's filipe@digirati> working. But the dovecot/config processes are still being created, there filipe@digirati> has been no change for the better.
So maybe you can give us more background on this setup. How many users are you supporting? How many mailboxes? What is your backend mailbox format? Maybe you need to share your dovecot config as well.
Have you tried upgrading to 2.3.19.1 as well?
So when you say "the accounts stopped logging in" does that mean your users started having problems logging into the system? Does that mean IMAP sessions timed out?
filipe@digirati> Now I have an error constantly appearing in the mail.err file
filipe@digirati> Aug 15 14:19:34 box6 dovecot: imap(USER_NAME): Error: Error reading filipe@digirati> configuration: read(/run/dovecot/config) failed: read(size=8192) failed: filipe@digirati> Interrupted system call - Also failed to read config by executing filipe@digirati> doveconf: /run/dovecot/config is a UNIX socket (path is from CONFIG_FILE filipe@digirati> environment)
Have you stopped and completely restarted your dovecot setup when you made the config changes?
filipe@digirati> Aug 15 14:19:34 box6 dovecot: imap(USER_NAME): Error: Error reading filipe@digirati> configuration: read(/run/dovecot/config) failed: read(size=8192) failed: filipe@digirati> Interrupted system call - Also failed to read config by executing filipe@digirati> doveconf: /run/dovecot/config is a UNIX socket (path is from CONFIG_FILE filipe@digirati> environment) filipe@digirati> Aug 15 14:19:34 box6 dovecot: imap(USER_NAME): Error: Error reading filipe@digirati> configuration: read(/run/dovecot/config) failed: read(size=8192) failed: filipe@digirati> Interrupted system call - Also failed to read config by executing filipe@digirati> doveconf: /run/dovecot/config is a UNIX socket (path is from CONFIG_FILE filipe@digirati> environment)
filipe@digirati> On 14/08/2022 22:24, John Stoffel wrote:
> "filipe@digirati" == filipe@digirati com br filipe@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
participants (3)
-
filipe＠digirati.com.br
-
John Stoffel
-
Paul Kudla (SCOM.CA Internet Services Inc.)