Re: Cyrus infrastructure performance less than expected

2008-04-29 Thread Eric Déchaux
Robert Banz a écrit : I don't have any system log that complains about something and the only Cyrus message I got is a DB4 warning about lockers. I think the DB4 in question is the TLS sessions cache DB and in my case the number of lockers can be as high as 8 000... Dump Berkeley DB with

Re: Cyrus infrastructure performance less than expected

2008-04-29 Thread Eric Déchaux
Alain Spineux a écrit : On Mon, Apr 28, 2008 at 11:31 PM, Eric Déchaux [EMAIL PROTECTED] wrote: Dear all, I have juste setup a Cyrus infrastructure based on VMware Virtual Infrastructure 3.0.1 and I have a huge performance problem. The new infrastructure was sized for 120 000

Re: Cyrus infrastructure performance less than expected

2008-04-29 Thread Pascal Gienger
Eric Déchaux [EMAIL PROTECTED] wrote: I would have loved to put Solaris, Zones and Massaging Server here but it was not a possibility. Custorme chose was VMware + Linux + Cyrus. Just as a sidenote: As closed source is not an option here, we use cyrus imap 2.3.12 on Solaris and not messaging

Re: Cyrus infrastructure performance less than expected

2008-04-29 Thread Rob Mueller
On current production platform the frontends use swap massively but the impact is far less than on the new platform. It's not so much how much swap is actually used, but how much is being paged in or paged out at any time. If there are memory pages not being used at all, the OS will swap

Re: Cyrus infrastructure performance less than expected

2008-04-29 Thread Eric Déchaux
Pascal Gienger a écrit : Eric Déchaux [EMAIL PROTECTED] wrote: The older infrastructure can stand the 42 000 concurrent sessions, the new one can't : I was expecting each frontend to be able to handle 5 500 concurrent sessions but they are not. Around 3 000 / 3 500 concurrent sessions the

Re: Cyrus infrastructure performance less than expected

2008-04-29 Thread Eric Déchaux
Rob Mueller a écrit : On current production platform the frontends use swap massively but the impact is far less than on the new platform. It's not so much how much swap is actually used, but how much is being paged in or paged out at any time. If there are memory pages not being used

Re: Cyrus infrastructure performance less than expected

2008-04-29 Thread David Lang
On Tue, 29 Apr 2008, Eric Déchaux wrote: Pascal Gienger a écrit : Eric Déchaux [EMAIL PROTECTED] wrote: The older infrastructure can stand the 42 000 concurrent sessions, the new one can't : I was expecting each frontend to be able to handle 5 500 concurrent sessions but they are not. Around

Re: Cyrus infrastructure performance less than expected

2008-04-29 Thread Eric Déchaux
Robert Banz a écrit : I don't have any system log that complains about something and the only Cyrus message I got is a DB4 warning about lockers. I think the DB4 in question is the TLS sessions cache DB and in my case the number of lockers can be as high as 8 000... Dump Berkeley DB

Cyrus infrastructure performance less than expected

2008-04-28 Thread Eric Déchaux
Dear all, I have juste setup a Cyrus infrastructure based on VMware Virtual Infrastructure 3.0.1 and I have a huge performance problem. The new infrastructure was sized for 120 000 mailboxes with 42 000 maximum concurrent IMAPS sessions (neither POP3 nor IMAP available). The important point

Re: Cyrus infrastructure performance less than expected

2008-04-28 Thread Robert Banz
I don't have any system log that complains about something and the only Cyrus message I got is a DB4 warning about lockers. I think the DB4 in question is the TLS sessions cache DB and in my case the number of lockers can be as high as 8 000... Dump Berkeley DB with a quickness, and

Re: Cyrus infrastructure performance less than expected

2008-04-28 Thread Alain Spineux
On Mon, Apr 28, 2008 at 11:31 PM, Eric Déchaux [EMAIL PROTECTED] wrote: Dear all, I have juste setup a Cyrus infrastructure based on VMware Virtual Infrastructure 3.0.1 and I have a huge performance problem. The new infrastructure was sized for 120 000 mailboxes with 42 000 maximum

Re: Cyrus infrastructure performance less than expected

2008-04-28 Thread Pascal Gienger
Eric Déchaux [EMAIL PROTECTED] wrote: The older infrastructure can stand the 42 000 concurrent sessions, the new one can't : I was expecting each frontend to be able to handle 5 500 concurrent sessions but they are not. Around 3 000 / 3 500 concurrent sessions the frontends begin to SWAP and