

Process Tracing
===============


If a Dovecot's process hangs or is just really slow, the best way to debug it is to see what it's really doing. Typically you'd be looking into imap or pop3 processes. 


Linux
=====



---%<-------------------------------------------------------------------------
strace -tt -o log -p <process pid> ---%<-------------------------------------------------------------------------



BSDs, OS X
==========



---%<-------------------------------------------------------------------------
# enable process tracing
ktrace -f log -p <process pid>
# do whatever makes it break, then stop the process tracing:
ktrace -C
# and see what it's done:
kdump -T -f log ---%<-------------------------------------------------------------------------



Solaris
=======



---%<-------------------------------------------------------------------------
truss -d -r0 -w1 -o log -p <process pid> ---%<-------------------------------------------------------------------------

'-r0' and '-w1' cause all IMAP input/output to be logged. '-d' adds timestamps to the log. 
(This file was created from the wiki on 2007-12-11 04:42)
