Although my high load errors with different, the following might help. Once I did the following system tuning, the errors went away (including the infamous backtrace/maildir_transaction...). The following parameters were cranked up (for dovecot,system, & mail) :
open files => 32768 locks => 32768 maxsyslogins => 16384 maxlogins => 4096 max_user_instances => 2048
In RHE, the first four are in limits.conf and the last is in /proc/sys/fs/inotify/max_user_instances. Probably all are not needed (in particular maxlogins) but open files definitely made a different - lsof was showing 24K files for dovecot & mail. My bottleneck was a piece of old network gear and once the traffic settled down open file dropped to 4K (and load from 200 to 0.5)
These might not address your particular problem but system tuning could address the memory corruption error. These settings also got rid of my error messages under low load.
It is also probably worth while to shut the system down and run memory test (i.e. memtest86+ - or if it is under maintenance just get it replaced)
---Jack
Allan Cassaro wrote:
On Tue, Sep 16, 2008 at 10:37 AM, Charles Marcus CMarcus@media-brokers.com wrote:
On 9/16/2008, Allan Cassaro (allan.cassaro@gmail.com) wrote:
Hi, always when my server is on high load I saw this errors on logs: doevecot -n output / version info?
Ouch! Sorry! I forgot this...