slow log file without tmp table info

I am using Percona server 5.5.27, I can’t find the tmp table information for query, according to the document, it should be one line like this:
Bytes_sent: 278 Tmp_tables: 0 Tmp_disk_tables: 0 Tmp_table_sizes: 0 But I can’t find it in my slow query log file? Any suggestion? thanks

You need to set the verbosity accordingly, see the docs: http://www.percona.com/doc/percona-server/5.5/diagnostics/slow_extended_55.html#log_slow_verbosity

It works after i set it to full

thanks