Re: [Dovecot] imap-login processes

2008-05-24 Thread Timo Sirainen
On Mon, 2008-05-19 at 12:06 -0400, Bryan Polk wrote: On Fri, 16 May 2008, Evaggelos Balaskas wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I hope something like this could help you : # Authentication Cache auth_cache_size = 10240 auth_cache_ttl = 18000 This may have

Re: [Dovecot] imap-login processes

2008-05-24 Thread Timo Sirainen
On Sun, 2008-05-25 at 05:08 +0300, Timo Sirainen wrote: On Mon, 2008-05-19 at 12:06 -0400, Bryan Polk wrote: On Fri, 16 May 2008, Evaggelos Balaskas wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I hope something like this could help you : # Authentication Cache

Re: [Dovecot] imap-login processes

2008-05-24 Thread Bryan Polk
On Sun, 25 May 2008, Timo Sirainen wrote: On Sun, 2008-05-25 at 05:08 +0300, Timo Sirainen wrote: On Mon, 2008-05-19 at 12:06 -0400, Bryan Polk wrote: On Fri, 16 May 2008, Evaggelos Balaskas wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I hope something like this could help you : #

Re: [Dovecot] imap-login processes

2008-05-19 Thread Bryan Polk
On Fri, 16 May 2008, Evaggelos Balaskas wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I hope something like this could help you : # Authentication Cache auth_cache_size = 10240 auth_cache_ttl = 18000 This may have done the trick! The number of imap-login processes has been holding

Re: [Dovecot] imap-login processes

2008-05-17 Thread Timo Sirainen
On Fri, 2008-05-16 at 14:47 -0400, Bryan Polk wrote: It would help to know what these extra processes are doing. Unfortunately there's no simple way to do that.. Maybe writing a script that trusses the processes for a few seconds and then seeing what it shows? To truss each imap-login

[Dovecot] imap-login processes

2008-05-16 Thread Bryan Polk
First, thanks for this great product. We migrated from Courier last week with only small bumps along the way. We have a few hundred active users with a mix of pop3 and imap clients. The server is running on sparc Solaris 9. We're seeing a problem now with the number of imap-login processes

Re: [Dovecot] imap-login processes

2008-05-16 Thread Timo Sirainen
On Fri, 2008-05-16 at 11:38 -0400, Bryan Polk wrote: First, thanks for this great product. We migrated from Courier last week with only small bumps along the way. We have a few hundred active users with a mix of pop3 and imap clients. The server is running on sparc Solaris 9. We're

Re: [Dovecot] imap-login processes

2008-05-16 Thread Bryan Polk
On Fri, 16 May 2008, Timo Sirainen wrote: How many imap processes do you have at that time? Each SSL connection uses up one imap-login process. One sure way to fix this would be to change to high-performance mode as described by http://wiki.dovecot.org/LoginProcess Currently 74 imap

Re: [Dovecot] imap-login processes

2008-05-16 Thread Timo Sirainen
On May 16, 2008, at 6:56 PM, Bryan Polk wrote: On Fri, 16 May 2008, Timo Sirainen wrote: How many imap processes do you have at that time? Each SSL connection uses up one imap-login process. One sure way to fix this would be to change to high-performance mode as described by

Re: [Dovecot] imap-login processes

2008-05-16 Thread Joe Allesi
I tried switching to high-performance mode yesterday.. It seemed to end up with sort of the same results, though harder to diagnose. Each process I guess ended up hitting the login_process_size = 64 max and then stopped responding. We had this same problem, and switching to high-performance mode

Re: [Dovecot] imap-login processes

2008-05-16 Thread Timo Sirainen
On May 16, 2008, at 8:39 PM, Joe Allesi wrote: I tried switching to high-performance mode yesterday.. It seemed to end up with sort of the same results, though harder to diagnose. Each process I guess ended up hitting the login_process_size = 64 max and then stopped responding. We had

Re: [Dovecot] imap-login processes

2008-05-16 Thread Bryan Polk
On Fri, 16 May 2008, Joe Allesi wrote: We had this same problem, and switching to high-performance mode helps. However, finding out which user or application is logging in, and controlling the end-user is the only way to fix it. In our case it was a multi-threaded application that used IMAP

Re: [Dovecot] imap-login processes

2008-05-16 Thread Frank Elsner
On Fri, 16 May 2008 14:47:05 -0400 (EDT) Bryan Polk wrote: On Fri, 16 May 2008, Joe Allesi wrote: We had this same problem, and switching to high-performance mode helps. However, finding out which user or application is logging in, and controlling the end-user is the only way to fix it.

Re: [Dovecot] imap-login processes

2008-05-16 Thread Evaggelos Balaskas
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I hope something like this could help you : # Authentication Cache auth_cache_size = 10240 auth_cache_ttl = 18000 Bryan Polk wrote: On Fri, 16 May 2008, Frank Elsner wrote: Do you have a Web-Interface like SquirrelMail or Horde on the same