[Bug 189616] Re: connection problems under load with hardy dovecot
** Changed in: dovecot (Ubuntu Hardy) Importance: Undecided = Medium Status: New = In Progress Target: None = ubuntu-8.04.1 ** Changed in: dovecot (Ubuntu Hardy) Assignee: (unassigned) = Mathias Gug (mathiaz) -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
Yes its being targeted for 8.04.1 -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
Shouldn't i be included on hardy? -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
So we just upgraded the mail server to hardy, and unfortunately we ran into the same problem again. This takes the dapper backport and any possible interaction with dapper libraries/kernel etc. out of the picture as we're now running a vanilla hardy server (with hardy kernel and hardy dovecot) and experiencing the same issue. I've had to downgrade to the dapper dovecot (running on hardy) so that our users can access their email. -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
** Changed in: dovecot (Ubuntu) Target: ubuntu-8.04 = ubuntu-8.04.1 -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
After some discussions, it seems that the problem is related to the login_max_processes_count option. The dapper version of dovecot wasn't enforcing this limit - this would explain why the dapper backport was working smoothly on hardy. Hardy version properly handles the login_max_process_count option. Moreover most of the clients are using imaps. According to http://wiki.dovecot.org/LoginProcess, the imap-login process acts as an SSL/TLS proxy in the case of ssl connections. Combined with the fact that imap clients such as thunderbird are known to open more than one imap connections, the maximum number of login processes can be hit with less than 50 users connected at the same time. I've attached a debdiff that logs a warning message when login_max_process_count is hit and no -login processes can be freed. It also add a note to the dovecot configuration. ** Changed in: dovecot (Ubuntu) Importance: Undecided = Medium Status: Incomplete = In Progress -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
An updated version of dovecot is available in my PPA - https://launchpad.net/~mathiaz/+archive/. ** Attachment added: dovecot_1.0.10-1ubuntu6~ppa1.debdiff http://launchpadlibrarian.net/14075991/dovecot_1.0.10-1ubuntu6%7Eppa1.debdiff -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
I have run 12 instances of the script (the python one) in parallel and nothing goes wrong, I think it has been a packaging issue. -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
** Attachment added: script to create the user accounts http://launchpadlibrarian.net/13464214/create_users.sh -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
** Attachment added: dovecot config http://launchpadlibrarian.net/13336759/dovecot.conf -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
Which back end did you use for dovecot? passwd, mysql, ldap? Can you post the config file cleaning the sensible information please. -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
Which back end did you use for dovecot? passwd, mysql, ldap? passwd Can you post the config file cleaning the sensible information please. I'll do this tomorrow. Also i would like to know how did you backport postfix, changing the sources to hardy ones and installing postfix using apt-get or just downloading the packages and installing them using dpkg Assuming you mean dovecot, we backported it in the normal way, i.e. downloading the dovecot source package from hardy, and recompiling it for dapper and then installing the resulting binaries with apt/dpkg. -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 189616] Re: connection problems under load with hardy dovecot
yes, sorry i meant dovecot, i don't know where i have my head on. -- connection problems under load with hardy dovecot https://bugs.launchpad.net/bugs/189616 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
