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Add JIT counters to pg_stat_statements

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This adds cumulative counters for jit operations to pg_stat_statements,
making it easier to diagnose how JIT is used in an installation.

These changes merge into the 1.10 changes applied in 76cbf7edb6 without
creating a new version.

Reviewed-By: Julien Rouhaud
Discussion: https://www.postgresql.org/message-id/flat/CABUevEySt4NTYqvWzwyAW_0-jG1bjN-y+tykapAnA0FALOs+Lw@mail.gmail.com
This commit is contained in:
Magnus Hagander
2022-04-08 13:51:01 +02:00
parent dad9ba1c82
commit 57d6aea00f
4 changed files with 175 additions and 41 deletions
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72
doc/src/sgml/pgstatstatements.sgml
View File

@@ -401,6 +401,78 @@
Total amount of WAL generated by the statement in bytes
</para></entry>
</row>
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>jit_functions</structfield> <type>bigint</type>
</para>
<para>
Total number of functions JIT-compiled by the statement
</para></entry>
</row>
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>jit_generation_time</structfield> <type>bigint</type>
</para>
<para>
Total time spent by the statement on generating JIT code, in milliseconds
</para></entry>
</row>
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>jit_inlining_count</structfield> <type>bigint</type>
</para>
<para>
Number of times functions have been inlined
</para></entry>
</row>
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>jit_inlining_time</structfield> <type>bigint</type>
</para>
<para>
Total time spent by the statement on inlining functions, in milliseconds
</para></entry>
</row>
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>jit_optimization_count</structfield> <type>bigint</type>
</para>
<para>
Number of times the statement has been optimized
</para></entry>
</row>
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>jit_optimization_time</structfield> <type>bigint</type>
</para>
<para>
Total time spent by the statement on optimizing, in milliseconds
</para></entry>
</row>
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>jit_emission_count</structfield> <type>bigint</type>
</para>
<para>
Number of times code has been emitted
</para></entry>
</row>
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>jit_emission_time</structfield> <type>bigint</type>
</para>
<para>
Total time spent by the statement on emitting code, in milliseconds
</para></entry>
</row>
</tbody>
</tgroup>
</table>