dovecot - Jul 2012 - imap-login: Panic: epoll_ctl(add, 6) failed: Invalid argument

Hello,

	More problems (it seems that we won't be able to put our new servers in 
production). The problem now is that when we reach 1000 dovecot 
processes we have errors like:

Jul  9 12:10:22 myotis31 dovecot: imap-login: Panic: epoll_ctl(add, 6) 
failed: Invalid argument
Jul  9 12:10:22 myotis31 dovecot: imap-login: Fatal: master: 
service(imap-login): child 32251 killed with signal 6 (core dumps disabled)

	and server doesn't accept any new connection.

	Our servers are running in ubuntu 12.04 with kernel 3.2.0-24-generic 
kernel. I have found a similar problem at 
https://bugzilla.redhat.com/show_bug.cgi?id=681578 but it is for redhat 
kernel of series 2.6.

	Could be the same problem? Any pointer to this problem for ubuntu 
kernels? Or for generic 3.0 kernels?

	Any idea?

-- 
Angel L. Mateo Mart?nez
Secci?n de Telem?tica
?rea de Tecnolog?as de la Informaci?n
y las Comunicaciones Aplicadas (ATICA)
http://www.um.es/atica
Tfo: 868887590
Fax: 868888337

On Mon, 2012-07-09 at 13:39 +0200, Angel L. Mateo wrote:
> Hello,
> 
> 	More problems (it seems that we won't be able to put our new servers
in
> production). The problem now is that when we reach 1000 dovecot 
> processes we have errors like:
> 
> Jul  9 12:10:22 myotis31 dovecot: imap-login: Panic: epoll_ctl(add, 6) 
> failed: Invalid argument
> Jul  9 12:10:22 myotis31 dovecot: imap-login: Fatal: master: 
> service(imap-login): child 32251 killed with signal 6 (core dumps disabled)
> 
> 	and server doesn't accept any new connection.
> 
> 	Our servers are running in ubuntu 12.04 with kernel 3.2.0-24-generic 
> kernel. I have found a similar problem at 
> https://bugzilla.redhat.com/show_bug.cgi?id=681578 but it is for redhat 
> kernel of series 2.6.
> 
> 	Could be the same problem? 
It's definitely the same problem.
> Any pointer to this problem for ubuntu 
> kernels? Or for generic 3.0 kernels?
Sorry, no idea.

Am 13.07.2012 11:37, schrieb Angel L. Mateo:
> El 09/07/12 14:37, Robert Schetterer escribi?:
> 
>> guess this is latest for 12.04
>> http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/
>>
>     I have check this 3.4 kernel and it seems there is no problem with it
> 
cool, thx for info

-- 
Best Regards
MfG Robert Schetterer