Michael Paquier efb0ef909f Track I/O timing for temporary file blocks in EXPLAIN (BUFFERS) ... Previously, the output of EXPLAIN (BUFFERS) option showed only the I/O timing spent reading and writing shared and local buffers. This commit adds on top of that the I/O timing for temporary buffers in the output of EXPLAIN (for spilled external sorts, hashes, materialization. etc). This can be helpful for users in cases where the I/O related to temporary buffers is the bottleneck. Like its cousin, this information is available only when track_io_timing is enabled. Playing the patch, this is showing an extra overhead of up to 1% even when using gettimeofday() as implementation for interval timings, which is slightly within the usual range noise still that's measurable. Author: Masahiko Sawada Reviewed-by: Georgios Kokolatos, Melanie Plageman, Julien Rouhaud, Ranier Vilela Discussion: https://postgr.es/m/CAD21AoAJgotTeP83p6HiAGDhs_9Fw9pZ2J=_tYTsiO5Ob-V5GQ@mail.gmail.com		2022-04-08 11:27:21 +09:00
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src	Track I/O timing for temporary file blocks in EXPLAIN (BUFFERS)	2022-04-08 11:27:21 +09:00
KNOWN_BUGS
Makefile	Remove maintainer-check target, fold into normal build	2013-10-10 20:11:56 -04:00
MISSING_FEATURES
TODO	Change documentation references to PG website to use https: not http:	2017-05-20 21:50:47 -04:00