├── .gitignore
├── LICENSE
├── README.md
├── docs
├── cte.json
├── cte_flamegraph.html
├── flamegraph.html
└── plan.json
├── go.mod
├── go.sum
├── main.go
├── pkg
├── html
│ ├── html.go
│ ├── html_test.go
│ └── template.go
└── plan
│ ├── plan.go
│ └── plan_test.go
├── static.go
├── static
├── bootstrap.min.css
├── d3-flamegraph.css
├── d3-flamegraph.min.js
├── d3-tip.min.js
├── d3.v4.min.js
├── html5shiv.min.js
└── respond.min.js
└── webview.go
/.gitignore:
--------------------------------------------------------------------------------
1 | # Binaries for programs and plugins
2 | *.exe
3 | *.exe~
4 | *.dll
5 | *.so
6 | *.dylib
7 |
8 | # Test binary, build with `go test -c`
9 | *.test
10 |
11 | # Output of the go coverage tool, specifically when used with LiteIDE
12 | *.out
13 |
14 | # The produced binary
15 | pg_flame
16 |
17 | # Common name of flamegraph output
18 | flamegraph.html
19 | pg_flame.html
20 | static.zip
21 | # Distribution directory
22 | dist
23 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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/README.md:
--------------------------------------------------------------------------------
1 | # pg_flame
2 |
3 | A flamegraph generator for Postgres `EXPLAIN ANALYZE` output.
4 |
5 | A almost rewrite version,
6 |
7 | * static.go is generated with [zipdata](https://github.com/alitrack/zipdata) from static directory.
8 | * Support offline.
9 | * Use [webview](https://github.com/webview/webview) to automatically open created html.
10 | * Support DATABASE_URL enviroment variable.
11 |
12 |
13 | 
14 |
15 |
16 | ## Demo
17 |
18 | Try the demo [here](https://mgartner.github.io/pg_flame/flamegraph.html).
19 |
20 | ## Installation
21 |
22 | ### Build from source
23 |
24 | If you'd like to build a binary from the source code, run the following
25 | commands. Note that compiling requires Go version 1.13+.
26 |
27 | ```
28 | $ go get -u github.com/alitrack/pg_flame
29 | ```
30 |
31 | A `pg_flame` binary will be created that you can place in your `$GOPATH/bin`.
32 |
33 | ## Usage
34 |
35 | ```bash
36 | usage: pg_flame []
37 |
38 | A flamegraph generator for Postgres EXPLAIN ANALYZE output.
39 |
40 | Flags:
41 | --help Show context-sensitive help (also try --help-long and --help-man).
42 | -U, --username="steven" database user name
43 | -h, --host="localhost" database server host or socket directory
44 | -p, --port=5432 database server port
45 | --sslmode="disable" database server sslmode
46 | --password=PASSWORD database server password
47 | --dbname="postgres" database name
48 | -o, --output="pg_flame.html" output html file
49 | -c, --command=COMMAND run only single command (SQL)
50 | -f, --file=FILE execute commands from file
51 | -s, --show_browser Launch browser if successful
52 | --version Show application version.
53 | ```
54 |
55 | ### Example: from sql command
56 |
57 | ```bash
58 | $ pg_flame -c 'EXPLAIN (ANALYZE, BUFFERS, FORMAT JSON) SELECT id FROM users'
59 | ```
60 |
61 | ### Example: from sql file
62 |
63 | Create a SQL file with the `EXPLAIN ANALYZE` query.
64 |
65 | ```sql
66 | -- query.sql
67 | EXPLAIN (ANALYZE, BUFFERS, FORMAT JSON)
68 | SELECT id
69 | FROM users
70 | ```
71 |
72 | Then run the query and save the JSON to a file.
73 |
74 | ```bash
75 | $ pg_flame -f query.sql
76 | ```
77 |
78 | ## Background
79 |
80 | [Flamegraphs](http://www.brendangregg.com/flamegraphs.html) were invented by
81 | Brendan Gregg to visualize CPU consumption per code-path of profiled software.
82 | They are useful visualization tools in many types of performance
83 | investigations. Flamegraphs have been used to visualize Oracle database
84 | [query
85 | plans](https://blog.tanelpoder.com/posts/visualizing-sql-plan-execution-time-with-flamegraphs/)
86 | and [query
87 | executions](https://externaltable.blogspot.com/2014/05/flame-graphs-for-oracle.html)
88 | , proving useful for debugging slow database queries.
89 |
90 | Pg_flame is in extension of that work for Postgres query plans. It generates a
91 | visual hierarchy of query plans. This visualization identifies the relative
92 | time of each part of a query plan.
93 |
94 | This tool relies on the
95 | [`spiermar/d3-flame-graph`](https://github.com/spiermar/d3-flame-graph) plugin to
96 | generate the flamegraph.
97 |
--------------------------------------------------------------------------------
/docs/cte.json:
--------------------------------------------------------------------------------
1 | [
2 | {
3 | "Plan": {
4 | "Node Type": "Aggregate",
5 | "Strategy": "Sorted",
6 | "Partial Mode": "Simple",
7 | "Parallel Aware": false,
8 | "Startup Cost": 15552.51,
9 | "Total Cost": 15554.36,
10 | "Plan Rows": 1,
11 | "Plan Width": 33,
12 | "Actual Startup Time": 755.383,
13 | "Actual Total Time": 755.383,
14 | "Actual Rows": 0,
15 | "Actual Loops": 1,
16 | "Group Key": ["u.id"],
17 | "Filter": "(count(*) > 1)",
18 | "Rows Removed by Filter": 0,
19 | "Shared Hit Blocks": 2957,
20 | "Shared Read Blocks": 0,
21 | "Shared Dirtied Blocks": 0,
22 | "Shared Written Blocks": 0,
23 | "Local Hit Blocks": 0,
24 | "Local Read Blocks": 0,
25 | "Local Dirtied Blocks": 0,
26 | "Local Written Blocks": 0,
27 | "Temp Read Blocks": 0,
28 | "Temp Written Blocks": 0,
29 | "Plans": [
30 | {
31 | "Node Type": "Seq Scan",
32 | "Parent Relationship": "InitPlan",
33 | "Subplan Name": "CTE sql_posts",
34 | "Parallel Aware": false,
35 | "Relation Name": "posts",
36 | "Alias": "posts",
37 | "Startup Cost": 0.00,
38 | "Total Cost": 209.00,
39 | "Plan Rows": 4971,
40 | "Plan Width": 36,
41 | "Actual Startup Time": 0.023,
42 | "Actual Total Time": 0.023,
43 | "Actual Rows": 1,
44 | "Actual Loops": 1,
45 | "Filter": "((title)::text ~ '.*sql.*'::text)",
46 | "Rows Removed by Filter": 1,
47 | "Shared Hit Blocks": 1,
48 | "Shared Read Blocks": 0,
49 | "Shared Dirtied Blocks": 0,
50 | "Shared Written Blocks": 0,
51 | "Local Hit Blocks": 0,
52 | "Local Read Blocks": 0,
53 | "Local Dirtied Blocks": 0,
54 | "Local Written Blocks": 0,
55 | "Temp Read Blocks": 0,
56 | "Temp Written Blocks": 0
57 | },
58 | {
59 | "Node Type": "Seq Scan",
60 | "Parent Relationship": "InitPlan",
61 | "Subplan Name": "CTE postgres_posts",
62 | "Parallel Aware": false,
63 | "Relation Name": "posts",
64 | "Alias": "posts_1",
65 | "Startup Cost": 0.00,
66 | "Total Cost": 209.00,
67 | "Plan Rows": 2481,
68 | "Plan Width": 36,
69 | "Actual Startup Time": 0.032,
70 | "Actual Total Time": 0.032,
71 | "Actual Rows": 1,
72 | "Actual Loops": 1,
73 | "Filter": "((title)::text ~ '.*postgres.*'::text)",
74 | "Rows Removed by Filter": 13,
75 | "Shared Hit Blocks": 1,
76 | "Shared Read Blocks": 0,
77 | "Shared Dirtied Blocks": 0,
78 | "Shared Written Blocks": 0,
79 | "Local Hit Blocks": 0,
80 | "Local Read Blocks": 0,
81 | "Local Dirtied Blocks": 0,
82 | "Local Written Blocks": 0,
83 | "Temp Read Blocks": 0,
84 | "Temp Written Blocks": 0
85 | },
86 | {
87 | "Node Type": "Seq Scan",
88 | "Parent Relationship": "InitPlan",
89 | "Subplan Name": "CTE database_posts",
90 | "Parallel Aware": false,
91 | "Relation Name": "posts",
92 | "Alias": "posts_2",
93 | "Startup Cost": 0.00,
94 | "Total Cost": 209.00,
95 | "Plan Rows": 2548,
96 | "Plan Width": 36,
97 | "Actual Startup Time": 0.010,
98 | "Actual Total Time": 0.010,
99 | "Actual Rows": 1,
100 | "Actual Loops": 1,
101 | "Filter": "((title)::text ~ '.*databases.*'::text)",
102 | "Rows Removed by Filter": 0,
103 | "Shared Hit Blocks": 1,
104 | "Shared Read Blocks": 0,
105 | "Shared Dirtied Blocks": 0,
106 | "Shared Written Blocks": 0,
107 | "Local Hit Blocks": 0,
108 | "Local Read Blocks": 0,
109 | "Local Dirtied Blocks": 0,
110 | "Local Written Blocks": 0,
111 | "Temp Read Blocks": 0,
112 | "Temp Written Blocks": 0
113 | },
114 | {
115 | "Node Type": "Nested Loop",
116 | "Parent Relationship": "InitPlan",
117 | "Subplan Name": "CTE performance_comments",
118 | "Parallel Aware": false,
119 | "Join Type": "Inner",
120 | "Startup Cost": 0.29,
121 | "Total Cost": 2242.31,
122 | "Plan Rows": 1,
123 | "Plan Width": 25,
124 | "Actual Startup Time": 223.165,
125 | "Actual Total Time": 223.165,
126 | "Actual Rows": 0,
127 | "Actual Loops": 1,
128 | "Inner Unique": true,
129 | "Shared Hit Blocks": 984,
130 | "Shared Read Blocks": 0,
131 | "Shared Dirtied Blocks": 0,
132 | "Shared Written Blocks": 0,
133 | "Local Hit Blocks": 0,
134 | "Local Read Blocks": 0,
135 | "Local Dirtied Blocks": 0,
136 | "Local Written Blocks": 0,
137 | "Temp Read Blocks": 0,
138 | "Temp Written Blocks": 0,
139 | "Plans": [
140 | {
141 | "Node Type": "Seq Scan",
142 | "Parent Relationship": "Outer",
143 | "Parallel Aware": false,
144 | "Relation Name": "comments",
145 | "Alias": "c",
146 | "Startup Cost": 0.00,
147 | "Total Cost": 2234.00,
148 | "Plan Rows": 1,
149 | "Plan Width": 4,
150 | "Actual Startup Time": 223.164,
151 | "Actual Total Time": 223.164,
152 | "Actual Rows": 0,
153 | "Actual Loops": 1,
154 | "Filter": "((body)::text ~ '.*performance.*'::text)",
155 | "Rows Removed by Filter": 100000,
156 | "Shared Hit Blocks": 984,
157 | "Shared Read Blocks": 0,
158 | "Shared Dirtied Blocks": 0,
159 | "Shared Written Blocks": 0,
160 | "Local Hit Blocks": 0,
161 | "Local Read Blocks": 0,
162 | "Local Dirtied Blocks": 0,
163 | "Local Written Blocks": 0,
164 | "Temp Read Blocks": 0,
165 | "Temp Written Blocks": 0
166 | },
167 | {
168 | "Node Type": "Index Scan",
169 | "Parent Relationship": "Inner",
170 | "Parallel Aware": false,
171 | "Scan Direction": "Forward",
172 | "Index Name": "users_pkey",
173 | "Relation Name": "users",
174 | "Alias": "u_1",
175 | "Startup Cost": 0.29,
176 | "Total Cost": 8.31,
177 | "Plan Rows": 1,
178 | "Plan Width": 25,
179 | "Actual Startup Time": 0.000,
180 | "Actual Total Time": 0.000,
181 | "Actual Rows": 0,
182 | "Actual Loops": 0,
183 | "Index Cond": "(id = c.user_id)",
184 | "Rows Removed by Index Recheck": 0,
185 | "Shared Hit Blocks": 0,
186 | "Shared Read Blocks": 0,
187 | "Shared Dirtied Blocks": 0,
188 | "Shared Written Blocks": 0,
189 | "Local Hit Blocks": 0,
190 | "Local Read Blocks": 0,
191 | "Local Dirtied Blocks": 0,
192 | "Local Written Blocks": 0,
193 | "Temp Read Blocks": 0,
194 | "Temp Written Blocks": 0
195 | }
196 | ]
197 | },
198 | {
199 | "Node Type": "Hash Join",
200 | "Parent Relationship": "InitPlan",
201 | "Subplan Name": "CTE testing_comments",
202 | "Parallel Aware": false,
203 | "Join Type": "Inner",
204 | "Startup Cost": 2861.59,
205 | "Total Cost": 5594.66,
206 | "Plan Rows": 50207,
207 | "Plan Width": 25,
208 | "Actual Startup Time": 252.949,
209 | "Actual Total Time": 252.949,
210 | "Actual Rows": 1,
211 | "Actual Loops": 1,
212 | "Inner Unique": false,
213 | "Hash Cond": "(u_2.id = c_1.user_id)",
214 | "Shared Hit Blocks": 985,
215 | "Shared Read Blocks": 0,
216 | "Shared Dirtied Blocks": 0,
217 | "Shared Written Blocks": 0,
218 | "Local Hit Blocks": 0,
219 | "Local Read Blocks": 0,
220 | "Local Dirtied Blocks": 0,
221 | "Local Written Blocks": 0,
222 | "Temp Read Blocks": 0,
223 | "Temp Written Blocks": 0,
224 | "Plans": [
225 | {
226 | "Node Type": "Seq Scan",
227 | "Parent Relationship": "Outer",
228 | "Parallel Aware": false,
229 | "Relation Name": "users",
230 | "Alias": "u_2",
231 | "Startup Cost": 0.00,
232 | "Total Cost": 1731.00,
233 | "Plan Rows": 100000,
234 | "Plan Width": 25,
235 | "Actual Startup Time": 0.016,
236 | "Actual Total Time": 0.017,
237 | "Actual Rows": 3,
238 | "Actual Loops": 1,
239 | "Shared Hit Blocks": 1,
240 | "Shared Read Blocks": 0,
241 | "Shared Dirtied Blocks": 0,
242 | "Shared Written Blocks": 0,
243 | "Local Hit Blocks": 0,
244 | "Local Read Blocks": 0,
245 | "Local Dirtied Blocks": 0,
246 | "Local Written Blocks": 0,
247 | "Temp Read Blocks": 0,
248 | "Temp Written Blocks": 0
249 | },
250 | {
251 | "Node Type": "Hash",
252 | "Parent Relationship": "Inner",
253 | "Parallel Aware": false,
254 | "Startup Cost": 2234.00,
255 | "Total Cost": 2234.00,
256 | "Plan Rows": 50207,
257 | "Plan Width": 4,
258 | "Actual Startup Time": 252.611,
259 | "Actual Total Time": 252.611,
260 | "Actual Rows": 49998,
261 | "Actual Loops": 1,
262 | "Hash Buckets": 65536,
263 | "Original Hash Buckets": 65536,
264 | "Hash Batches": 1,
265 | "Original Hash Batches": 1,
266 | "Peak Memory Usage": 2270,
267 | "Shared Hit Blocks": 984,
268 | "Shared Read Blocks": 0,
269 | "Shared Dirtied Blocks": 0,
270 | "Shared Written Blocks": 0,
271 | "Local Hit Blocks": 0,
272 | "Local Read Blocks": 0,
273 | "Local Dirtied Blocks": 0,
274 | "Local Written Blocks": 0,
275 | "Temp Read Blocks": 0,
276 | "Temp Written Blocks": 0,
277 | "Plans": [
278 | {
279 | "Node Type": "Seq Scan",
280 | "Parent Relationship": "Outer",
281 | "Parallel Aware": false,
282 | "Relation Name": "comments",
283 | "Alias": "c_1",
284 | "Startup Cost": 0.00,
285 | "Total Cost": 2234.00,
286 | "Plan Rows": 50207,
287 | "Plan Width": 4,
288 | "Actual Startup Time": 0.035,
289 | "Actual Total Time": 239.699,
290 | "Actual Rows": 49998,
291 | "Actual Loops": 1,
292 | "Filter": "((body)::text ~ '.*testing.*'::text)",
293 | "Rows Removed by Filter": 50002,
294 | "Shared Hit Blocks": 984,
295 | "Shared Read Blocks": 0,
296 | "Shared Dirtied Blocks": 0,
297 | "Shared Written Blocks": 0,
298 | "Local Hit Blocks": 0,
299 | "Local Read Blocks": 0,
300 | "Local Dirtied Blocks": 0,
301 | "Local Written Blocks": 0,
302 | "Temp Read Blocks": 0,
303 | "Temp Written Blocks": 0
304 | }
305 | ]
306 | }
307 | ]
308 | },
309 | {
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978 | "Original Hash Batches": 1,
979 | "Peak Memory Usage": 8,
980 | "Shared Hit Blocks": 984,
981 | "Shared Read Blocks": 0,
982 | "Shared Dirtied Blocks": 0,
983 | "Shared Written Blocks": 0,
984 | "Local Hit Blocks": 0,
985 | "Local Read Blocks": 0,
986 | "Local Dirtied Blocks": 0,
987 | "Local Written Blocks": 0,
988 | "Temp Read Blocks": 0,
989 | "Temp Written Blocks": 0,
990 | "Plans": [
991 | {
992 | "Node Type": "Nested Loop",
993 | "Parent Relationship": "Outer",
994 | "Parallel Aware": false,
995 | "Join Type": "Inner",
996 | "Startup Cost": 0.29,
997 | "Total Cost": 8.33,
998 | "Plan Rows": 1,
999 | "Plan Width": 29,
1000 | "Actual Startup Time": 223.166,
1001 | "Actual Total Time": 223.166,
1002 | "Actual Rows": 0,
1003 | "Actual Loops": 1,
1004 | "Inner Unique": true,
1005 | "Shared Hit Blocks": 984,
1006 | "Shared Read Blocks": 0,
1007 | "Shared Dirtied Blocks": 0,
1008 | "Shared Written Blocks": 0,
1009 | "Local Hit Blocks": 0,
1010 | "Local Read Blocks": 0,
1011 | "Local Dirtied Blocks": 0,
1012 | "Local Written Blocks": 0,
1013 | "Temp Read Blocks": 0,
1014 | "Temp Written Blocks": 0,
1015 | "Plans": [
1016 | {
1017 | "Node Type": "CTE Scan",
1018 | "Parent Relationship": "Outer",
1019 | "Parallel Aware": false,
1020 | "CTE Name": "performance_comments",
1021 | "Alias": "pc",
1022 | "Startup Cost": 0.00,
1023 | "Total Cost": 0.02,
1024 | "Plan Rows": 1,
1025 | "Plan Width": 4,
1026 | "Actual Startup Time": 223.166,
1027 | "Actual Total Time": 223.166,
1028 | "Actual Rows": 0,
1029 | "Actual Loops": 1,
1030 | "Shared Hit Blocks": 984,
1031 | "Shared Read Blocks": 0,
1032 | "Shared Dirtied Blocks": 0,
1033 | "Shared Written Blocks": 0,
1034 | "Local Hit Blocks": 0,
1035 | "Local Read Blocks": 0,
1036 | "Local Dirtied Blocks": 0,
1037 | "Local Written Blocks": 0,
1038 | "Temp Read Blocks": 0,
1039 | "Temp Written Blocks": 0
1040 | },
1041 | {
1042 | "Node Type": "Index Scan",
1043 | "Parent Relationship": "Inner",
1044 | "Parallel Aware": false,
1045 | "Scan Direction": "Forward",
1046 | "Index Name": "users_pkey",
1047 | "Relation Name": "users",
1048 | "Alias": "u",
1049 | "Startup Cost": 0.29,
1050 | "Total Cost": 8.31,
1051 | "Plan Rows": 1,
1052 | "Plan Width": 25,
1053 | "Actual Startup Time": 0.000,
1054 | "Actual Total Time": 0.000,
1055 | "Actual Rows": 0,
1056 | "Actual Loops": 0,
1057 | "Index Cond": "(id = pc.user_id)",
1058 | "Rows Removed by Index Recheck": 0,
1059 | "Shared Hit Blocks": 0,
1060 | "Shared Read Blocks": 0,
1061 | "Shared Dirtied Blocks": 0,
1062 | "Shared Written Blocks": 0,
1063 | "Local Hit Blocks": 0,
1064 | "Local Read Blocks": 0,
1065 | "Local Dirtied Blocks": 0,
1066 | "Local Written Blocks": 0,
1067 | "Temp Read Blocks": 0,
1068 | "Temp Written Blocks": 0
1069 | }
1070 | ]
1071 | }
1072 | ]
1073 | }
1074 | ]
1075 | }
1076 | ]
1077 | }
1078 | ]
1079 | }
1080 | ]
1081 | }
1082 | ]
1083 | }
1084 | ]
1085 | }
1086 | ]
1087 | }
1088 | ]
1089 | }
1090 | ]
1091 | }
1092 | ]
1093 | },
1094 | {
1095 | "Node Type": "Sort",
1096 | "Parent Relationship": "Inner",
1097 | "Parallel Aware": false,
1098 | "Startup Cost": 1.08,
1099 | "Total Cost": 1.14,
1100 | "Plan Rows": 25,
1101 | "Plan Width": 4,
1102 | "Actual Startup Time": 0.000,
1103 | "Actual Total Time": 0.000,
1104 | "Actual Rows": 0,
1105 | "Actual Loops": 0,
1106 | "Sort Key": ["egu.id"],
1107 | "Shared Hit Blocks": 0,
1108 | "Shared Read Blocks": 0,
1109 | "Shared Dirtied Blocks": 0,
1110 | "Shared Written Blocks": 0,
1111 | "Local Hit Blocks": 0,
1112 | "Local Read Blocks": 0,
1113 | "Local Dirtied Blocks": 0,
1114 | "Local Written Blocks": 0,
1115 | "Temp Read Blocks": 0,
1116 | "Temp Written Blocks": 0,
1117 | "Plans": [
1118 | {
1119 | "Node Type": "CTE Scan",
1120 | "Parent Relationship": "Outer",
1121 | "Parallel Aware": false,
1122 | "CTE Name": "early_gmail_users",
1123 | "Alias": "egu",
1124 | "Startup Cost": 0.00,
1125 | "Total Cost": 0.50,
1126 | "Plan Rows": 25,
1127 | "Plan Width": 4,
1128 | "Actual Startup Time": 0.000,
1129 | "Actual Total Time": 0.000,
1130 | "Actual Rows": 0,
1131 | "Actual Loops": 0,
1132 | "Shared Hit Blocks": 0,
1133 | "Shared Read Blocks": 0,
1134 | "Shared Dirtied Blocks": 0,
1135 | "Shared Written Blocks": 0,
1136 | "Local Hit Blocks": 0,
1137 | "Local Read Blocks": 0,
1138 | "Local Dirtied Blocks": 0,
1139 | "Local Written Blocks": 0,
1140 | "Temp Read Blocks": 0,
1141 | "Temp Written Blocks": 0
1142 | }
1143 | ]
1144 | }
1145 | ]
1146 | },
1147 | {
1148 | "Node Type": "Hash Join",
1149 | "Parent Relationship": "Inner",
1150 | "Parallel Aware": false,
1151 | "Join Type": "Inner",
1152 | "Startup Cost": 0.52,
1153 | "Total Cost": 2.01,
1154 | "Plan Rows": 16,
1155 | "Plan Width": 8,
1156 | "Actual Startup Time": 0.000,
1157 | "Actual Total Time": 0.000,
1158 | "Actual Rows": 0,
1159 | "Actual Loops": 0,
1160 | "Inner Unique": false,
1161 | "Hash Cond": "(ehu.id = eyu.id)",
1162 | "Shared Hit Blocks": 0,
1163 | "Shared Read Blocks": 0,
1164 | "Shared Dirtied Blocks": 0,
1165 | "Shared Written Blocks": 0,
1166 | "Local Hit Blocks": 0,
1167 | "Local Read Blocks": 0,
1168 | "Local Dirtied Blocks": 0,
1169 | "Local Written Blocks": 0,
1170 | "Temp Read Blocks": 0,
1171 | "Temp Written Blocks": 0,
1172 | "Plans": [
1173 | {
1174 | "Node Type": "CTE Scan",
1175 | "Parent Relationship": "Outer",
1176 | "Parallel Aware": false,
1177 | "CTE Name": "early_hotmail_users",
1178 | "Alias": "ehu",
1179 | "Startup Cost": 0.00,
1180 | "Total Cost": 1.12,
1181 | "Plan Rows": 56,
1182 | "Plan Width": 4,
1183 | "Actual Startup Time": 0.000,
1184 | "Actual Total Time": 0.000,
1185 | "Actual Rows": 0,
1186 | "Actual Loops": 0,
1187 | "Shared Hit Blocks": 0,
1188 | "Shared Read Blocks": 0,
1189 | "Shared Dirtied Blocks": 0,
1190 | "Shared Written Blocks": 0,
1191 | "Local Hit Blocks": 0,
1192 | "Local Read Blocks": 0,
1193 | "Local Dirtied Blocks": 0,
1194 | "Local Written Blocks": 0,
1195 | "Temp Read Blocks": 0,
1196 | "Temp Written Blocks": 0
1197 | },
1198 | {
1199 | "Node Type": "Hash",
1200 | "Parent Relationship": "Inner",
1201 | "Parallel Aware": false,
1202 | "Startup Cost": 0.32,
1203 | "Total Cost": 0.32,
1204 | "Plan Rows": 16,
1205 | "Plan Width": 4,
1206 | "Actual Startup Time": 0.000,
1207 | "Actual Total Time": 0.000,
1208 | "Actual Rows": 0,
1209 | "Actual Loops": 0,
1210 | "Shared Hit Blocks": 0,
1211 | "Shared Read Blocks": 0,
1212 | "Shared Dirtied Blocks": 0,
1213 | "Shared Written Blocks": 0,
1214 | "Local Hit Blocks": 0,
1215 | "Local Read Blocks": 0,
1216 | "Local Dirtied Blocks": 0,
1217 | "Local Written Blocks": 0,
1218 | "Temp Read Blocks": 0,
1219 | "Temp Written Blocks": 0,
1220 | "Plans": [
1221 | {
1222 | "Node Type": "CTE Scan",
1223 | "Parent Relationship": "Outer",
1224 | "Parallel Aware": false,
1225 | "CTE Name": "early_yahoo_users",
1226 | "Alias": "eyu",
1227 | "Startup Cost": 0.00,
1228 | "Total Cost": 0.32,
1229 | "Plan Rows": 16,
1230 | "Plan Width": 4,
1231 | "Actual Startup Time": 0.000,
1232 | "Actual Total Time": 0.000,
1233 | "Actual Rows": 0,
1234 | "Actual Loops": 0,
1235 | "Shared Hit Blocks": 0,
1236 | "Shared Read Blocks": 0,
1237 | "Shared Dirtied Blocks": 0,
1238 | "Shared Written Blocks": 0,
1239 | "Local Hit Blocks": 0,
1240 | "Local Read Blocks": 0,
1241 | "Local Dirtied Blocks": 0,
1242 | "Local Written Blocks": 0,
1243 | "Temp Read Blocks": 0,
1244 | "Temp Written Blocks": 0
1245 | }
1246 | ]
1247 | }
1248 | ]
1249 | }
1250 | ]
1251 | }
1252 | ]
1253 | },
1254 | "Planning Time": 20.603,
1255 | "Triggers": [
1256 | ],
1257 | "Execution Time": 756.376
1258 | }
1259 | ]
1260 |
--------------------------------------------------------------------------------
/docs/flamegraph.html:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
56 |
57 | pg_flame
58 |
59 |
60 |
61 |
62 |
63 |
64 |
81 |
82 |
83 |
84 |
85 |
86 |
73 |
90 |
91 |
92 |
93 |
94 |
95 |
164 |
165 | {{if .Method}}
166 |
167 | | Method |
168 | {{.Method}} |
169 |
170 | {{end}}
171 | {{if .Table}}
172 |
173 | | Table |
174 | {{.Table}} |
175 |
176 | {{end}}
177 | {{if .Index}}
178 |
179 | | Index |
180 | {{.Index}} |
181 |
182 | {{end}}
183 | {{if .Alias}}
184 |
185 | | Alias |
186 | {{.Alias}} |
187 |
188 | {{end}}
189 | {{if .ParentRelationship}}
190 |
191 | | Parent Relationship |
192 | {{.ParentRelationship}} |
193 |
194 | {{end}}
195 | {{if .PlanCost}}
196 |
197 | | Plan Cost |
198 | {{.PlanCost}} |
199 |
200 | {{end}}
201 | {{if .PlanRows}}
202 |
203 | | Plan Rows |
204 | {{.PlanRows}} |
205 |
206 | {{end}}
207 | {{if .PlanWidth}}
208 |
209 | | Plan Width |
210 | {{.PlanWidth}} |
211 |
212 | {{end}}
213 | {{if .ActualTotalTime}}
214 |
215 | | Actual Total Time |
216 | {{.ActualTotalTime}} ms |
217 |
218 | {{end}}
219 | {{if .ActualRows}}
220 |
221 | | Actual Rows |
222 | {{.ActualRows}} |
223 |
224 | {{end}}
225 | {{if .ActualLoops}}
226 |
227 | | Actual Loops |
228 | {{.ActualLoops}} |
229 |
230 | {{end}}
231 | {{if .Filter}}
232 |
233 | | Filter |
234 | {{.Filter}} |
235 |
236 | {{end}}
237 | {{if .JoinFilter}}
238 |
239 | | Join Filter |
240 | {{.JoinFilter}} |
241 |
242 | {{end}}
243 | {{if .HashCond}}
244 |
245 | | Hash Cond |
246 | {{.HashCond}} |
247 |
248 | {{end}}
249 | {{if .IndexCond}}
250 |
251 | | Index Cond |
252 | {{.IndexCond}} |
253 |
254 | {{end}}
255 | {{if .RecheckCond}}
256 |
257 | | Recheck Cond |
258 | {{.RecheckCond}} |
259 |
260 | {{end}}
261 | {{if .BuffersHit}}
262 |
263 | | Buffers Shared Hit |
264 | {{.BuffersHit}} |
265 |
266 | {{end}}
267 | {{if .BuffersRead}}
268 |
269 | | Buffers Shared Read |
270 | {{.BuffersRead}} |
271 |
272 | {{end}}
273 | {{if .HashBuckets}}
274 |
275 | | Hash Buckets |
276 | {{.HashBuckets}} |
277 |
278 | {{end}}
279 | {{if .HashBatches}}
280 |
281 | | Hash Batches |
282 | {{.HashBatches}} |
283 |
284 | {{end}}
285 | {{if .MemoryUsage}}
286 |
287 | | Memory Usage |
288 | {{.MemoryUsage}} kB |
289 |
290 | {{end}}
291 | {{if .SortKey}}
292 |
293 | | Sort Key |
294 | {{.SortKey}} |
295 |
296 | {{end}}
297 | {{if .SortMethod}}
298 |
299 | | Sort Method |
300 | {{.SortMethod}} |
301 |
302 | {{end}}
303 | {{if .SortSpaceUsed}}
304 |
305 | | Sort Space Used |
306 | {{.SortSpaceUsed}} kB |
307 |
308 | {{end}}
309 | {{if .SortSpaceType}}
310 |
311 | | Sort Space Type |
312 | {{.SortSpaceType}} |
313 |
314 | {{end}}
315 |
316 |
317 | `))
318 |
--------------------------------------------------------------------------------
/pkg/plan/plan.go:
--------------------------------------------------------------------------------
1 | package plan
2 |
3 | import (
4 | "encoding/json"
5 | "errors"
6 | "io"
7 | )
8 |
9 | type Plan struct {
10 | PlanningTime float64 `json:"Planning Time"`
11 | ExecutionTree Node `json:"Plan"`
12 | }
13 |
14 | type Node struct {
15 | Method string `json:"Node Type"`
16 | Table string `json:"Relation Name"`
17 | Alias string `json:"Alias"`
18 | Index string `json:"Index Name"`
19 | ParentRelationship string `json:"Parent Relationship"`
20 | PlanCost float64 `json:"Total Cost"`
21 | PlanRows int `json:"Plan Rows"`
22 | PlanWidth int `json:"Plan Width"`
23 | ActualTotalTime float64 `json:"Actual Total Time"`
24 | ActualRows int `json:"Actual Rows"`
25 | ActualLoops int `json:"Actual Loops"`
26 | Filter string `json:"Filter"`
27 | JoinFilter string `json:"Join Filter"`
28 | HashCond string `json:"Hash Cond"`
29 | IndexCond string `json:"Index Cond"`
30 | RecheckCond string `json:"Recheck Cond"`
31 | BuffersHit int `json:"Shared Hit Blocks"`
32 | BuffersRead int `json:"Shared Read Blocks"`
33 | MemoryUsage int `json:"Peak Memory Usage"`
34 | HashBuckets int `json:"Hash Buckets"`
35 | HashBatches int `json:"Hash Batches"`
36 | SortKey []string `json:"Sort Key"`
37 | SortMethod string `json:"Sort Method"`
38 | SortSpaceUsed int `json:"Sort Space Used"`
39 | SortSpaceType string `json:"Sort Space Type"`
40 | Children []Node `json:"Plans"`
41 | }
42 |
43 | var ErrEmptyPlanJSON = errors.New("empty plan JSON")
44 | var ErrInvalidPlanJSON = errors.New("invalid plan JSON")
45 |
46 | func New(r io.Reader) (Plan, error) {
47 | var plans []Plan
48 |
49 | err := json.NewDecoder(r).Decode(&plans)
50 | if err != nil {
51 | var e *json.UnmarshalTypeError
52 | if errors.As(err, &e) {
53 | err = ErrInvalidPlanJSON
54 | }
55 | return Plan{}, err
56 | }
57 |
58 | if len(plans) < 1 {
59 | return Plan{}, ErrEmptyPlanJSON
60 | }
61 |
62 | return plans[0], nil
63 | }
64 |
--------------------------------------------------------------------------------
/pkg/plan/plan_test.go:
--------------------------------------------------------------------------------
1 | package plan
2 |
3 | import (
4 | "strings"
5 | "testing"
6 |
7 | "github.com/stretchr/testify/assert"
8 | )
9 |
10 | func TestNew(t *testing.T) {
11 |
12 | t.Run("decodes EXPLAIN ANALYZE plan JSON", func(t *testing.T) {
13 | input := strings.NewReader(planJSON)
14 |
15 | p, err := New(input)
16 |
17 | assert.NoError(t, err)
18 |
19 | assert.Equal(t, "Nested Loop", p.ExecutionTree.Method)
20 | assert.Equal(t, "", p.ExecutionTree.Table)
21 | assert.Equal(t, 0.049, p.ExecutionTree.ActualTotalTime)
22 |
23 | child := p.ExecutionTree.Children[0]
24 |
25 | assert.Equal(t, "Hash Join", child.Method)
26 | assert.Equal(t, "users", child.Table)
27 | assert.Equal(t, "users_pkey", child.Index)
28 | assert.Equal(t, "u", child.Alias)
29 | assert.Equal(t, "Outer", child.ParentRelationship)
30 |
31 | assert.Equal(t, 35.06, child.PlanCost)
32 | assert.Equal(t, 1, child.PlanRows)
33 | assert.Equal(t, 543, child.PlanWidth)
34 |
35 | assert.Equal(t, 0.049, child.ActualTotalTime)
36 | assert.Equal(t, 5, child.ActualRows)
37 | assert.Equal(t, 1, child.ActualLoops)
38 |
39 | assert.Equal(t, "((title)::text ~ '.*sql.*'::text)", child.Filter)
40 | assert.Equal(t, "(id = 123)", child.JoinFilter)
41 | assert.Equal(t, "((p.user_id = c.user_id) AND (p.id = c.post_id))", child.HashCond)
42 | assert.Equal(t, "(id = p.user_id)", child.IndexCond)
43 | assert.Equal(t, "(p.user_id = 123)", child.RecheckCond)
44 |
45 | assert.Equal(t, 5, child.BuffersHit)
46 | assert.Equal(t, 1, child.BuffersRead)
47 |
48 | assert.Equal(t, 1024, child.HashBuckets)
49 | assert.Equal(t, 1, child.HashBatches)
50 | assert.Equal(t, 8, child.MemoryUsage)
51 |
52 | assert.Equal(t, []string{"u.id", "u.email DESC"}, child.SortKey)
53 | assert.Equal(t, "quicksort", child.SortMethod)
54 | assert.Equal(t, 33, child.SortSpaceUsed)
55 | assert.Equal(t, "Memory", child.SortSpaceType)
56 | })
57 |
58 | t.Run("returns an error with empty plan JSON", func(t *testing.T) {
59 | input := strings.NewReader("[]")
60 |
61 | _, err := New(input)
62 |
63 | assert.Error(t, err)
64 | assert.Equal(t, ErrEmptyPlanJSON, err)
65 | })
66 |
67 | t.Run("returns an error with invalid plan JSON", func(t *testing.T) {
68 | input := strings.NewReader("{}")
69 |
70 | _, err := New(input)
71 |
72 | assert.Error(t, err)
73 | assert.Equal(t, ErrInvalidPlanJSON, err)
74 | })
75 |
76 | t.Run("returns an error with invalid JSON syntax", func(t *testing.T) {
77 | input := strings.NewReader("[}")
78 |
79 | _, err := New(input)
80 |
81 | assert.Error(t, err)
82 | })
83 |
84 | }
85 |
86 | const planJSON = `
87 | [
88 | {
89 | "Plan": {
90 | "Node Type": "Nested Loop",
91 | "Parallel Aware": false,
92 | "Join Type": "Inner",
93 | "Startup Cost": 265.38,
94 | "Total Cost": 288.42,
95 | "Plan Rows": 1,
96 | "Plan Width": 539,
97 | "Actual Startup Time": 0.049,
98 | "Actual Total Time": 0.049,
99 | "Actual Rows": 0,
100 | "Actual Loops": 1,
101 | "Inner Unique": true,
102 | "Shared Hit Blocks": 5,
103 | "Shared Read Blocks": 1,
104 | "Shared Dirtied Blocks": 0,
105 | "Shared Written Blocks": 0,
106 | "Local Hit Blocks": 0,
107 | "Local Read Blocks": 0,
108 | "Local Dirtied Blocks": 0,
109 | "Local Written Blocks": 0,
110 | "Temp Read Blocks": 0,
111 | "Temp Written Blocks": 0,
112 | "Plans": [
113 | {
114 | "Node Type": "Hash Join",
115 | "Relation Name": "users",
116 | "Alias": "u",
117 | "Index Name": "users_pkey",
118 | "Parent Relationship": "Outer",
119 | "Parallel Aware": false,
120 | "Join Type": "Inner",
121 | "Startup Cost": 13.50,
122 | "Total Cost": 35.06,
123 | "Plan Rows": 1,
124 | "Plan Width": 543,
125 | "Actual Startup Time": 0.049,
126 | "Actual Total Time": 0.049,
127 | "Actual Rows": 5,
128 | "Actual Loops": 1,
129 | "Inner Unique": false,
130 | "Filter": "((title)::text ~ '.*sql.*'::text)",
131 | "Hash Cond": "((p.user_id = c.user_id) AND (p.id = c.post_id))",
132 | "Index Cond": "(id = p.user_id)",
133 | "Join Filter": "(id = 123)",
134 | "Recheck Cond": "(p.user_id = 123)",
135 | "Hash Buckets": 1024,
136 | "Hash Batches": 1,
137 | "Peak Memory Usage": 8,
138 | "Shared Hit Blocks": 5,
139 | "Shared Read Blocks": 1,
140 | "Shared Dirtied Blocks": 0,
141 | "Shared Written Blocks": 0,
142 | "Sort Key": ["u.id", "u.email DESC"],
143 | "Sort Method": "quicksort",
144 | "Sort Space Used": 33,
145 | "Sort Space Type": "Memory",
146 | "Local Hit Blocks": 0,
147 | "Local Read Blocks": 0,
148 | "Local Dirtied Blocks": 0,
149 | "Local Written Blocks": 0,
150 | "Temp Read Blocks": 0,
151 | "Temp Written Blocks": 0,
152 | "Plans": [
153 | ]
154 | }
155 | ]
156 | },
157 | "Planning Time": 2.523,
158 | "Triggers": [
159 | ],
160 | "Execution Time": 0.221
161 | }
162 | ]
163 | `
164 |
--------------------------------------------------------------------------------
/static/d3-flamegraph.css:
--------------------------------------------------------------------------------
1 | .d3-flame-graph rect {
2 | stroke: #EEEEEE;
3 | fill-opacity: .8;
4 | }
5 |
6 | .d3-flame-graph rect:hover {
7 | stroke: #474747;
8 | stroke-width: 0.5;
9 | cursor: pointer;
10 | }
11 |
12 | .d3-flame-graph-label {
13 | pointer-events: none;
14 | white-space: nowrap;
15 | text-overflow: ellipsis;
16 | overflow: hidden;
17 | font-size: 12px;
18 | font-family: Verdana;
19 | margin-left: 4px;
20 | margin-right: 4px;
21 | line-height: 1.5;
22 | padding: 0 0 0;
23 | font-weight: 400;
24 | color: black;
25 | text-align: left;
26 | }
27 |
28 | .d3-flame-graph .fade {
29 | opacity: 0.6 !important;
30 | }
31 |
32 | .d3-flame-graph .title {
33 | font-size: 20px;
34 | font-family: Verdana;
35 | }
36 |
37 | .d3-flame-graph-tip {
38 | line-height: 1;
39 | font-family: Verdana;
40 | font-size: 12px;
41 | padding: 12px;
42 | background: rgba(0, 0, 0, 0.8);
43 | color: #fff;
44 | border-radius: 2px;
45 | pointer-events: none;
46 | }
47 |
48 | /* Creates a small triangle extender for the tooltip */
49 | .d3-flame-graph-tip:after {
50 | box-sizing: border-box;
51 | display: inline;
52 | font-size: 10px;
53 | width: 100%;
54 | line-height: 1;
55 | color: rgba(0, 0, 0, 0.8);
56 | position: absolute;
57 | pointer-events: none;
58 | }
59 |
60 | /* Northward tooltips */
61 | .d3-flame-graph-tip.n:after {
62 | content: "\25BC";
63 | margin: -1px 0 0 0;
64 | top: 100%;
65 | left: 0;
66 | text-align: center;
67 | }
68 |
69 | /* Eastward tooltips */
70 | .d3-flame-graph-tip.e:after {
71 | content: "\25C0";
72 | margin: -4px 0 0 0;
73 | top: 50%;
74 | left: -8px;
75 | }
76 |
77 | /* Southward tooltips */
78 | .d3-flame-graph-tip.s:after {
79 | content: "\25B2";
80 | margin: 0 0 1px 0;
81 | top: -8px;
82 | left: 0;
83 | text-align: center;
84 | }
85 |
86 | /* Westward tooltips */
87 | .d3-flame-graph-tip.w:after {
88 | content: "\25B6";
89 | margin: -4px 0 0 -1px;
90 | top: 50%;
91 | left: 100%;
92 | }
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1 | /**
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1 | /*! Respond.js v1.4.2: min/max-width media query polyfill * Copyright 2013 Scott Jehl
2 | * Licensed under https://github.com/scottjehl/Respond/blob/master/LICENSE-MIT
3 | * */
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