postgres

Commit Graph

Author	SHA1	Message	Date
Tom Lane	f0d6f20278	Keep pg_stat_statements' query texts in a file, not in shared memory. This change allows us to eliminate the previous limit on stored query length, and it makes the shared-memory hash table very much smaller, allowing more statements to be tracked. (The default value of pg_stat_statements.max is therefore increased from 1000 to 5000.) In typical scenarios, the hash table can be large enough to hold all the statements commonly issued by an application, so that there is little "churn" in the set of tracked statements, and thus little need to do I/O to the file. To further reduce the need for I/O to the query-texts file, add a way to retrieve all the columns of the pg_stat_statements view except for the query text column. This is probably not of much interest for human use but it could be exploited by programs, which will prefer using the queryid anyway. Ordinarily, we'd need to bump the extension version number for the latter change. But since we already advanced pg_stat_statements' version number from 1.1 to 1.2 in the 9.4 development cycle, it seems all right to just redefine what 1.2 means. Peter Geoghegan, reviewed by Pavel Stehule	12 years ago
Fujii Masao	91484409bd	Expose qurey ID in pg_stat_statements view. The query ID is the internal hash identifier of the statement, and was not available in pg_stat_statements view so far. Daniel Farina, Sameer Thakur and Peter Geoghegan, reviewed by me.	12 years ago
Fujii Masao	6f9e39bc99	Fix typo in update scripts for some contrib modules.	13 years ago
Tom Lane	1dd89eadcd	Rename I/O timing statistics columns to blk_read_time and blk_write_time. This seems more consistent with the pre-existing choices for names of other statistics columns. Rename assorted internal identifiers to match.	14 years ago
Robert Haas	5b4f346611	Expose track_iotiming information via pg_stat_statements. Ants Aasma, reviewed by Greg Smith, with very minor tweaks by me.	14 years ago
Robert Haas	2254367435	Make EXPLAIN (BUFFERS) track blocks dirtied, as well as those written. Also expose the new counters through pg_stat_statements. Patch by me. Review by Fujii Masao and Greg Smith.	14 years ago

2 Commits (ecacbdbcee67e202cfcaa1180da170b9f13654bb)