华为云首页 用户手册

云数据库 GAUSSDB-DBE_PROFILER:示例

云数据库 GAUSSDB-DBE_PROFILER:示例

时间：2024-11-13 14:45:51
云数据库 GAUSSDB 二次封装接口（推荐）

示例

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
 
--step1 创建表和存储过程
gaussdb=# DROP TABLE IF EXISTS t1;
gaussdb=# CREATE TABLE t1 (i int);
gaussdb=# CREATE OR REPLACE PROCEDURE p1() AS
	sql_stmt varchar2(200);
	result number;
BEGIN
    for i in 1..1000 loop
      insert into t1 values(1);
    end loop;
    sql_stmt := 'select count(*) from t1';
    EXECUTE IMMEDIATE sql_stmt into result;
END;
/
gaussdb=# CREATE OR REPLACE PROCEDURE p2() AS
BEGIN
   p1();
END;
/
gaussdb=# CREATE OR REPLACE PROCEDURE p3() AS
BEGIN
    p2();
END;
/

--step2 调用plprofiler接口对存储过程进行profiling
gaussdb=# SELECT dbe_profiler.pl_start_profiling('123');
gaussdb=# CALL p3();

--step3 查询相关profiling信息
--查询dbe_profiler.pl_profiling_functions表查看此次profiling涉及的存储过程
gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_functions ORDER BY run_id, funcoid;
       run_id        | funcoid | schema | funcname | total_occur | total_time 
---------------------+---------+--------+----------+-------------+------------
 140300887521024_123 |   16770 | public | p1()     |           1 |      54217
 140300887521024_123 |   16771 | public | p2()     |           1 |      54941
 140300887521024_123 |   16772 | public | p3()     |           1 |      55758
(3 rows)
--查询dbe_profiler.pl_profiling_details表查看存过内每条语句的执行时间细节
gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_details WHERE funcoid = 16770 ORDER BY run_id, funcoid, line#;
       run_id        | funcoid | line# |                   source                    |  cmd_type  | total_occur | total_time | max_time | min_time 
---------------------+---------+-------+---------------------------------------------+------------+-------------+------------+----------+----------
 140300887521024_123 |   16770 |     1 |  DECLARE                                    |            |           0 |          0 |        0 |        0
 140300887521024_123 |   16770 |     2 | sql_stmt varchar2(200);                     |            |           0 |          0 |        0 |        0
 140300887521024_123 |   16770 |     3 | result number;                              |            |           0 |          0 |        0 |        0
 140300887521024_123 |   16770 |     4 | begin                                       |            |           0 |          0 |        0 |        0
 140300887521024_123 |   16770 |     5 |     for i in 1..1000 loop                   | FORI       |           1 |      52496 |    52496 |    52496
 140300887521024_123 |   16770 |     6 |       insert into t1 values(1);             | EXE CS QL    |        1000 |      51970 |     2115 |       47
 140300887521024_123 |   16770 |     7 |     end loop;                               |            |           0 |          0 |        0 |        0
 140300887521024_123 |   16770 |     8 |     sql_stmt := 'select count(*) from t1';  | ASSIGN     |           1 |        446 |      446 |      446
 140300887521024_123 |   16770 |     9 |     EXECUTE IMMEDIATE sql_stmt into result; | DYNEXECUTE |           1 |       1271 |     1271 |     1271
 140300887521024_123 |   16770 |    10 | end                                         |            |           0 |          0 |        0 |        0
(10 rows)
--查询dbe_profiler.pl_profiling_callgraph表查看调用栈信息和对应每个存过执行的整体时间（total_time、self_time对应调用栈栈顶存储过程的总时间和自身执行时间）
gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_callgraph ORDER BY run_id, stack;
       run_id        |                                   stack                                   | self_time 
---------------------+---------------------------------------------------------------------------+-----------
 140300887521024_123 | {"public.p3() oid=16772"}                                                 |       817
 140300887521024_123 | {"public.p3() oid=16772","public.p2() oid=16771"}                         |       724
 140300887521024_123 | {"public.p3() oid=16772","public.p2() oid=16771","public.p1() oid=16770"} |     54217
(3 rows)
--查询dbe_profiler.pl_profiling_trackinfo表查看存储过程每个阶段的执行时间
gaussdb=# SELECT step_name, loops_count FROM dbe_profiler.pl_profiling_trackinfo WHERE funcoid=16770;
  step_name   | loops_count 
--------------+-------------
 init         |           1
 package      |           1
 spictx       |           1
 compile      |           1
 exec_context |           1
 execute      |           1
 exec_cursor  |           1
 cleanup      |           1
 finsh        |           1
(9 rows)

--step4 删除系统表数据
gaussdb=# SELECT dbe_profiler.pl_clear_profiling('');
gaussdb=# SELECT step_name, loops_count FROM dbe_profiler.pl_profiling_trackinfo WHERE funcoid=16770;
 step_name | loops_count 
-----------+-------------
(0 rows)
gaussdb=# DROP TABLE t1;

--step5 profiling包含自治事务的存储过程。
--建表
gaussdb=# CREATE TABLE t2(a int, b int);
--创建包含自治事务的存储过程
gaussdb=# CREATE OR REPLACE PROCEDURE autonomous(a int, b int)  AS 
DECLARE 
	num3 int := a;
	num4 int := b;
	PRAGMA AUTONOMOUS_TRANSACTION;
BEGIN
	insert into t2 values(num3, num4); 
	dbe_output.print_line('just use call.');
END;
/
--创建调用自治事务存储过程的普通存储过程
gaussdb=# CREATE OR REPLACE PROCEDURE autonomous_1(a int, b int)  AS 
DECLARE 
BEGIN
	dbe_output.print_line('just no use call.');
	insert into t2 values(666, 666);
	autonomous(a,b);
END;
/
gaussdb=# SELECT dbe_profiler.pl_start_profiling ('100');
gaussdb=# CALL autonomous(11,22);
--查询表信息
gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_functions ORDER BY run_id, funcoid;
 run_id | funcoid | schema | funcname | total_occur | total_time 
--------+---------+--------+----------+-------------+------------
(0 rows)

gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_details ORDER BY run_id, funcoid, line#;
 run_id | funcoid | line# | source | cmd_type | total_occur | total_time | max_time | min_time 
--------+---------+-------+--------+----------+-------------+------------+----------+----------
(0 rows)

gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_callgraph ORDER BY run_id, stack;
 run_id | stack | self_time 
--------+-------+-----------
(0 rows)

gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_trackinfo ORDER BY run_id, funcoid;
 run_id | funcoid | step_name | loops_count | max_time | min_time | avg_time | total_time 
--------+---------+-----------+-------------+----------+----------+----------+------------
(0 rows)

gaussdb=# SELECT dbe_profiler.pl_start_profiling ('101');
gaussdb=# CALL autonomous_1(11,22);
gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_functions ORDER BY run_id, funcoid;
       run_id        | funcoid |   schema   |    funcname    | total_occur | total_time 
---------------------+---------+------------+----------------+-------------+------------
 140421237831424_101 |   10422 | dbe_output | print_line()   |           1 |        758
 140421237831424_101 |   16771 | public     | autonomous_1() |           1 |      23855
(2 rows)

gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_details ORDER BY run_id, funcoid, line#;
       run_id        | funcoid | line# |                   source                    | cmd_type | total_occur | total_time | max_time | min_time 
---------------------+---------+-------+---------------------------------------------+----------+-------------+------------+----------+----------
 140421237831424_101 |   10422 |     1 |                                             |          |           0 |          0 |        0 |        0
 140421237831424_101 |   10422 |     2 | BEGIN                                       |          |           0 |          0 |        0 |        0
 140421237831424_101 |   10422 |     3 |     PKG_UTIL.io_print(format, true);        | PERFORM  |           1 |        754 |      754 |      754
 140421237831424_101 |   10422 |     4 | END;                                        |          |           0 |          0 |        0 |        0
 140421237831424_101 |   10422 |     5 |                                             |          |           0 |          0 |        0 |        0
 140421237831424_101 |   16771 |     1 |                                             |          |           0 |          0 |        0 |        0
 140421237831424_101 |   16771 |     2 | DECLARE                                     |          |           0 |          0 |        0 |        0
 140421237831424_101 |   16771 |     3 | BEGIN                                       |          |           0 |          0 |        0 |        0
 140421237831424_101 |   16771 |     4 | dbe_output.print_line('just no use call.'); | PERFORM  |           1 |       2435 |     2435 |     2435
 140421237831424_101 |   16771 |     5 | insert into t2 values(666, 666);            | EXECSQL  |           1 |        602 |      602 |      602
 140421237831424_101 |   16771 |     6 | autonomous(a,b);                            | PERFORM  |           1 |      20813 |    20813 |    20813
 140421237831424_101 |   16771 |     7 | END                                         |          |           0 |          0 |        0 |        0
(12 rows)

gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_callgraph ORDER BY run_id, stack;
       run_id        |                                  stack                                  | self_time 
---------------------+-------------------------------------------------------------------------+-----------
 140421237831424_101 | {"public.autonomous_1() oid=16771"}                                     |     23097
 140421237831424_101 | {"public.autonomous_1() oid=16771","dbe_output.print_line() oid=10422"} |       758
(2 rows)

gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_trackinfo ORDER BY run_id, funcoid;
       run_id        | funcoid |  step_name   | loops_count | max_time | min_time | avg_time | total_time 
---------------------+---------+--------------+-------------+----------+----------+----------+------------
 140421237831424_101 |   10422 | init         |           1 |        0 |        0 |        0 |          0
 140421237831424_101 |   10422 | package      |           1 |        9 |        9 |        9 |          9
 140421237831424_101 |   10422 | spictx       |           1 |        1 |        1 |        1 |          1
 140421237831424_101 |   10422 | compile      |           1 |      383 |      383 |      383 |        383
 140421237831424_101 |   10422 | exec_context |           1 |        1 |        1 |        1 |          1
 140421237831424_101 |   10422 | execute      |           1 |     1301 |     1301 |     1301 |       1301
 140421237831424_101 |   10422 | exec_cursor  |           1 |        3 |        3 |        3 |          3
 140421237831424_101 |   10422 | cleanup      |           1 |       11 |       11 |       11 |         11
 140421237831424_101 |   10422 | finsh        |           1 |        0 |        0 |        0 |          0
 140421237831424_101 |   16771 | init         |           1 |        0 |        0 |        0 |          0
 140421237831424_101 |   16771 | package      |           1 |      103 |      103 |      103 |        103
 140421237831424_101 |   16771 | spictx       |           1 |        1 |        1 |        1 |          1
 140421237831424_101 |   16771 | compile      |           1 |     1869 |     1869 |     1869 |       1869
 140421237831424_101 |   16771 | exec_context |           1 |        3 |        3 |        3 |          3
 140421237831424_101 |   16771 | execute      |           1 |    24011 |    24011 |    24011 |      24011
 140421237831424_101 |   16771 | exec_cursor  |           1 |        1 |        1 |        1 |          1
 140421237831424_101 |   16771 | cleanup      |           1 |       16 |       16 |       16 |         16
 140421237831424_101 |   16771 | finsh        |           1 |        1 |        1 |        1 |          1
(18 rows)

gaussdb=# SELECT dbe_profiler.pl_clear_profiling('');
gaussdb=# SELECT * FROM dbe_profiler.pl_profiling_functions;
 run_id | funcoid | schema | funcname | total_occur | total_time 
--------+---------+--------+----------+-------------+------------
(0 rows)

gaussdb=# DROP TABLE t2;
support.huaweicloud.com/centralized-devg-v8-gaussdb/gaussdb-42-0817.html

华为云11.11 2核1G 2M 云服务器

29元/年

立即注册 领万元上云礼券

抽奖赢11111元免单

续费同价 L实例 2核2G 4M

98元/年

热门域名 1元 随心购

1元/年

看了此文的人还看了
CDN加速 GaussDB 文字转换成语音 免费的服务器 如何创建网站 域名网站购买 私有云桌面 云主机哪个好 域名怎么备案 手机云电脑 SSL证书申请 云点播服务器 免费OCR是什么 电脑云桌面 域名备案怎么弄 语音转文字 文字图片识别 云桌面是什么 网址安全检测 网站建设搭建 国外CDN加速 SSL免费证书申请 短信批量发送 图片OCR识别 云数据库MySQL 个人域名购买 录音转文字 扫描图片识别文字 OCR图片识别 行驶证识别 虚拟电话号码 电话呼叫中心软件 怎么制作一个网站 Email注册网站 华为VNC 图像文字识别 企业网站制作 个人网站搭建 华为云计算 免费租用云托管 云桌面云服务器 ocr文字识别免费版 HTTPS证书申请 图片文字识别转换 国外域名注册商 使用免费虚拟主机 云电脑主机多少钱 鲲鹏云手机 短信验证码平台 OCR图片文字识别 SSL证书是什么 申请企业邮箱步骤 免费的企业用邮箱 云免流搭建教程 域名价格
热门活动
云数据库 GAUSSDB-DBE_PROFILER:示例

搜索反馈

您搜索到想要的结果了吗?

是的 没有

意见反馈

0/200

提交 取消

提交成功！非常感谢您的反馈，我们会继续努力做到更好 反馈提交失败！请稍后重试！
产品专区
推荐文章
更多内容
云硬盘存储EVS Web应用防火墙 人机语音识别 云计算入门 云数据库选择 HDC大会 华为云计算 响应式建站是什么 智慧班牌系统