On 01/18/2010 05:44 PM, Gabriele Bulfon wrote: > Thanx so much for your reply. > > Yes, I forgot about some technical details... > Systems are all Solaris 10 5/08, some are x86 multicores, some are sparc > T multicores, some > are virtual servers inside VMWare infrastructure, but I must say the > degradation is almost > the same indipendently of the underlying hardware. > These machines have been changed in time, upgrading to modern hardware > and latest > Solaris 10 releases, everytime by reconstructing all the db from the > imap spool on a fresh > install of our Intranet Server distribution (that contains cyrus and all > the other software). > All the cyrus base runs on top of a ZFS mirrored pool. so ZFS.... we also hit a huge performance problem when our zpool on which we stored all cyrus data was exceeding 80% of the available space. Our soloution was to transfer the data from "configdirectory" (usually /var/imap but see your imapd.conf) to a separate zfs that was big enough to hold all data (from "configdirectory") there and still not being filled up to 80% of the capacity. In our case the data from "configdirectory" is about 500 Mb for ~16k users. > We never suffered problems from Cyrus, and we never found "imapd" on top > of the processes. > Now these updated machines are running for at least a couple of years > (Solaris 05/08 :) ). Did you ever update and/or apply the recommended patches from SUN, there were changes in ZFS. > I believe that the degradation has been slowly coming to this point, and > only now > I started to have feedback from users tired of waiting some seconds to > delete and so on. I bet it is the same ZFS problem as we had. Try to relocate the data from "configdirectory". It would also be a good idea to install the solaris/zfs updates. > > I think I should anyway start by upgrading, and then check again. > Do you think I can safely rebuild the new cyrus with the same flags and > make install on my binaries? > This is how I was building my 2.2.10: > > ./configure --prefix=/iserver --with-auth=unix --with-ldap=/iserver > --with-bdb=/iserver --with-sasl=/iserver --with-cyrus-prefix=/iserver > --without-snmp --with-openssl=/usr/sfw > > The SASL built inside the "iserver" is cyrus-sasl-2.1.20. Didi ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
