search for: hibernation

After setting imap_hibernate_timeout to 60s, I could not find any hibernated connections after a few hours. I tested hibernation and made an observation: IDLE'd imap sessions only hibernate if they don't have a mailbox SELECT'd, otherwise they never hibernate. Is this the way it's supposed to work? Joseph Tam <jtam.home at gmail.com>

* Timo Sirainen <tss at iki.fi> 2015.08.25 17:28: > >> ==> /var/log/dovecot/dovecot.log <== > >> Aug 25 09:42:07 nihlus dovecot: imap(tlx at leuxner.net): Error: net_connect_unix(/var/run/dovecot/imap-hibernate) failed: Permission denied > >> Aug 25 09:42:07 nihlus dovecot: imap(tlx at leuxner.net): Error: Couldn't hibernate imap client: Couldn't

I tested with FreeBSD 11 and it worked just fine... did you follow https://wiki.dovecot.org/IMAPServer/Hibernation this to set it up? Aki > On 23 October 2018 at 10:15 Alex <alex at jili.ga> wrote: > > > Aki, is it configuration error or dovecot bug ? > Can I use imap-hibernate on FreeBSD ? > > > > Alex ????? 2018-10-19 10:31: > > Yes, > > > > After I c...

Yes, After I changed mode and user/group Oct 18 19:17:50 server dovecot: imap(email at example.com)<57613><VVXuZ4N4avOASO/q>: Error: kevent(-1) for notify remove fail ed: Bad file descriptor Oct 18 19:17:50 server dovecot: imap(email at example.com)<57613><VVXuZ4N4avOASO/q>: Error: close(-1) for notify remove failed: Bad file descriptor Oct 18 19:17:50 server dovecot:

...of imap processes and the amount of memory they use by moving IDLEing connections into imap-hibernate processes where they are waiting for something to happen (changes to the mailbox or IMAP client to do something). Mailbox changes are noticed only if inotify/kqueue is enabled, so without them the hibernation feature won't work well. For now only the IMAP connections that are in IDLE can be hibernated. In theory non-IDLEing connections could also be hibernated, but the main problem here is that if EXPUNGEs can't be sent at the time the hibernation is over, the current code can't handle it....

Hello! I tried to use imap-hibernate. But errors in maillog: Oct 19 05:14:24 server dovecot: imap(email at example.com)<67125><Lu7ndYt4n8aASO/q>: Error: kevent(-1) for notify remove failed: Bad file descriptor Oct 19 05:14:24 server dovecot: imap(email at example.com)<67125><Lu7ndYt4n8aASO/q>: Error: close(-1) for notify remove failed: Bad file descriptor Oct 19

...; > I'll keep reporting our experiences here, that is if something blows up > > spectacularly. ^o^ > > > > Christian > > Hi! > > We have customers using it in larger deployments. A good idea is to have > as much of your clients hibernating as possible, as the hibernation > process is much smaller than actual IMAP process. > > You should probably also look at reusing the processes, as this will > probably help your performance, > https://wiki.dovecot.org/PerformanceTuning and > https://wiki.dovecot.org/LoginProcess are probably a good starting >...

* Thomas Leuxner <tlx at leuxner.net> 2015.08.25 09:45: > > http://hg.dovecot.org/dovecot-2.2/rev/64c73e6bd397 > > ==> /var/log/dovecot/dovecot.log <== > Aug 25 09:42:07 nihlus dovecot: imap(tlx at leuxner.net): Error: net_connect_unix(/var/run/dovecot/imap-hibernate) failed: Permission denied > Aug 25 09:42:07 nihlus dovecot: imap(tlx at leuxner.net): Error:

* Timo Sirainen <tss at iki.fi> 2015.08.25 22:21: > There's no good default setting here. It depends on your userdb settings and/or mail_uid setting. So for example if your imap processes are running as vmail user, you should set service imap-hibernate { unix_listener imap-hibernate { user = vmail } }. Then again if you are using system users (or otherwise multiple UIDs) it gets more

...0-23 11:01: > Yes, but my configuration is FreeBSD 10.4 and ZFS > I\\\'ll try to reconfigure. > > > Thanks > > > Aki Tuomi ????? 2018-10-23 10:48: >> I tested with FreeBSD 11 and it worked just fine... did you follow >> https://wiki.dovecot.org/IMAPServer/Hibernation this to set it up? >> >> Aki >> >>> On 23 October 2018 at 10:15 Alex <alex at jili.ga> wrote: >>> >>> >>> Aki, is it configuration error or dovecot bug ? >>> Can I use imap-hibernate on FreeBSD ? >>> >>> &g...

Hello, as some may remember, we're running very dense IMAP cluster here, in excess of 50k IMAP sessions per node (current record holder is 68k, design is for 200k+). The first issue we ran into was that the dovecot master process (which is single thread and thus a bottleneck) was approaching 100% CPU usage (aka using a full core) when trying to spawn off new IMAP processes. This was

Yes, but my configuration is FreeBSD 10.4 and ZFS I\'ll try to reconfigure. Thanks Aki Tuomi ????? 2018-10-23 10:48: > I tested with FreeBSD 11 and it worked just fine... did you follow > https://wiki.dovecot.org/IMAPServer/Hibernation this to set it up? > > Aki > >> On 23 October 2018 at 10:15 Alex <alex at jili.ga> wrote: >> >> >> Aki, is it configuration error or dovecot bug ? >> Can I use imap-hibernate on FreeBSD ? >> >> >> >> Alex ????? 2018-10-19 1...

Aki, is it configuration error or dovecot bug ? Can I use imap-hibernate on FreeBSD ? Alex ????? 2018-10-19 10:31: > Yes, > > After I changed mode and user/group > > Oct 18 19:17:50 server dovecot: > imap(email at example.com)<57613><VVXuZ4N4avOASO/q>: Error: kevent(-1) > for notify remove fail > ed: Bad file descriptor > Oct 18 19:17:50 server dovecot:

...ate-process? It looks so from the service section, but I don't see any "hibernate" processes active. It no longer logs an error if the selected mailbox is virtual. It simply doesn't start up the hibernate process. If you set mail_debug=yes it'll log why it won't start the hibernation. Also just committed a change that logs the mailbox name. >>> 'chmod 666' mitigates the permission issue on the socket. However it seems to have other issues then: >> >> You can also change the unix_listener { user, group, mode } as needed for different services (imap...

Hi, I cannot have suspend and hibernate working on a Samsung NC10 (netbook) running CentOS 5.4 i386. When I try suspending/hibernating the screen becomes black (with a few logs, like "shrinking memory" for hibernate) and then the computer hangs and I have to force a shutdown with the power button. This wiki page seems to say that it should work out of the box:

...nces here, that is if something blows up > > > spectacularly. ^o^ > > > > > > Christian > > > > Hi! > > > > We have customers using it in larger deployments. A good idea is to have > > as much of your clients hibernating as possible, as the hibernation > > process is much smaller than actual IMAP process. > > > > You should probably also look at reusing the processes, as this will > > probably help your performance, > > https://wiki.dovecot.org/PerformanceTuning and > > https://wiki.dovecot.org/LoginProcess are...

Hello, Dovecot 2.2.27 (Debian Jessie backports). When issuing a "doveadm kick" for a specific user I was greeted by: --- "warning: other connections would also be kicked from following users:" --- and a list of 22odd thousand users. As it turns out, kick wants to smack the hibernation proces(ses) that have hibernated sessions for this user, obviously the wrong approach here. If there's doveadm command to wake up and thus un-hibernate sessions for a specific user this could be used as a workaround but a quick glance suggest no such thing. This functionality is absolutely c...

...on is FreeBSD 10.4 and ZFS >> I\\\\\\\'ll try to reconfigure. >> >> >> Thanks >> >> >> Aki Tuomi ????? 2018-10-23 10:48: >>> I tested with FreeBSD 11 and it worked just fine... did you follow >>> https://wiki.dovecot.org/IMAPServer/Hibernation this to set it up? >>> >>> Aki >>> >>>> On 23 October 2018 at 10:15 Alex <alex at jili.ga> wrote: >>>> >>>> >>>> Aki, is it configuration error or dovecot bug ? >>>> Can I use imap-hibernate on FreeBSD...

I can't get imap-hibernate to fire up. The process is not starting, and there are no clues in the logs. I tried several users/groups, but nothing happens (although I see plenty of IDLE imap-connections). Even mode 0666 didn't work. I'm on Slackware (no FreeBSD), built from source with ./configure --with-mysql My systems runs with a virtual user, and imap-processes are run under

On 08/26/2015 01:33 PM, Thomas Leuxner wrote: > * Timo Sirainen <tss at iki.fi> 2015.08.25 22:21: > >> There's no good default setting here. It depends on your userdb settings and/or mail_uid setting. So for example if your imap processes are running as vmail user, you should set service imap-hibernate { unix_listener imap-hibernate { user = vmail } }. Then again if you are