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Server : LiteSpeed System : Linux srv104790275 5.15.0-161-generic #171-Ubuntu SMP Sat Oct 11 08:17:01 UTC 2025 x86_64 User : dewac4139 ( 1077) PHP Version : 8.0.30 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory : /usr/share/doc/dovecot-core/wiki/ |
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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 <= 10.4 ------------------ ---%<------------------------------------------------------------------------- # 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 ---%<------------------------------------------------------------------------- OS X >= 10.5 ------------ ---%<------------------------------------------------------------------------- dtruss -p <process id> ---%<------------------------------------------------------------------------- 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 2019-06-19 12:42)