命令：
[mysql] root:/mnt# pt-pmp --pid 16898
Wed Dec 7 18:41:51 UTC 2016
warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fffd4126000
18 libaio::??(libaio.so.1),::??,::??,::??,start_thread(libpthread.so.0),clone(libc.so.6),??
6 pthread_cond_wait,one_thread_per_connection_end,do_handle_one_connection,handle_one_connection,start_thread(libpthread.so.0),clone(libc.so.6),??
3 select(libc.so.6),::??,::??,start_thread(libpthread.so.0),clone(libc.so.6),??
3 read(libpthread.so.0),::??,my_net_read,do_command,do_handle_one_connection,handle_one_connection,start_thread(libpthread.so.0),clone(libc.so.6),??
3 pthread_cond_timedwait,::??,::??,start_thread(libpthread.so.0),clone(libc.so.6),??
1 read(libpthread.so.0),vio_read_buff,::??,my_net_read,cli_safe_read,handle_slave_io,start_thread(libpthread.so.0),clone(libc.so.6),??
1 pthread_cond_timedwait,MYSQL_BIN_LOG::wait_for_update_bin_log,mysql_binlog_send,dispatch_command,do_handle_one_connection,handle_one_connection,start_thread(libpthread.so.0),clone(libc.so.6),??
1 poll(libc.so.6),handle_connections_sockets,mysqld_main,__libc_start_main(libc.so.6),_start
1 fsync(libpthread.so.0),::??,::??,::??,::??,::??,::??,ha_commit_trans,trans_commit,Xid_log_event::do_apply_event,apply_event_and_update_pos,handle_slave_sql,start_thread(libpthread.so.0),clone(libc.so.6),??
1 do_sigwait(libpthread.so.0),sigwait(libpthread.so.0),signal_hand,start_thread(libpthread.so.0),clone(libc.so.6),??
版本：
[mysql] root:/mnt# pt-pmp --version
pt-pmp 2.2.19
[mysql] root:/mnt# gdb --version
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>.
软件包：
[mysql] root:/mnt# dpkg --get-selections | grep -i "percona\|mysql"
libdbd-mysql-perl install
libmysqlclient-dev install
libmysqlclient18 install
libmysqlclient18-dev install
libperconaserverclient18 install
mysqltuner install
percona-server-client-5.5 install
percona-server-common-5.5 install
percona-server-server-5.5 hold
percona-toolkit install