5.8.1 mysqld DTrace 探针参考
MySQL 支持以下静态探针,这些探针按功能分组。
table5.6 MySQL DTrace 探针
Group | Probes |
---|---|
Connection | connection-start , connection-done |
Command | command-start , command-done |
Query | query-start , query-done |
Query Parsing | query-parse-start , query-parse-done |
Query Cache | query-cache-hit , query-cache-miss |
Query Execution | query-exec-start , query-exec-done |
Row Level | insert-row-start , insert-row-done |
update-row-start , update-row-done | |
delete-row-start , delete-row-done | |
Row Reads | read-row-start , read-row-done |
Index Reads | index-read-row-start , index-read-row-done |
Lock | handler-rdlock-start , handler-rdlock-done |
handler-wrlock-start , handler-wrlock-done | |
handler-unlock-start , handler-unlock-done | |
Filesort | filesort-start , filesort-done |
Statement | select-start , select-done |
insert-start , insert-done | |
insert-select-start , insert-select-done | |
update-start , update-done | |
multi-update-start , multi-update-done | |
delete-start , delete-done | |
multi-delete-start , multi-delete-done | |
Network | net-read-start , net-read-done , net-write-start , net-write-done |
Keycache | keycache-read-start , keycache-read-block , keycache-read-done , keycache-read-hit , keycache-read-miss , keycache-write-start , keycache-write-block , keycache-write-done |
Note
从探测器中提取参数数据时,每个参数都以argN
的形式提供,从arg0
开始。为了在定义中标识每个自变量,将为它们提供一个描述性名称,但是您必须使用相应的argN
参数来访问信息。