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ID

3751

Title

Reduce timing overhead of EXPLAIN ANALYZE using rdtsc

CI (CFBot)

Not processed

Stats (from CFBot)

Unknown

Tags

Performance

Created

2022-07-01 08:24:07

Last modified

2024-02-01 18:44:02 (2Â yearsÂ ago)

Latest email

2026-04-09 16:02:28 (2Â monthsÂ ago)

Status

2024-01 (2024-01-01 â€“ 2024-01-31): Returned with feedback

2023-11 (2023-11-01 â€“ 2023-12-04): Moved to different CF

2023-09 (2023-09-01 â€“ 2023-09-30): Moved to different CF

2023-07 (2023-07-01 â€“ 2023-07-31): Moved to different CF

2023-03 (2023-03-01 â€“ 2023-04-08): Moved to different CF

2023-01 (2023-01-01 â€“ 2023-01-31): Moved to different CF

2022-09 (2022-09-01 â€“ 2022-09-30): Moved to different CF

2022-07 (2022-07-01 â€“ 2022-07-31): Moved to different CF

Target version

16

Authors

Andres Freund (andresfreund), Lukas Fittl (lfittl), David Geier (geidav)

Reviewers

Lukas Fittl (lfittl), Hannu Krosing (hannukrosing) Become reviewer

Committer

Links

Emails

Reduce timing overhead of EXPLAIN ANALYZE using rdtsc?: First at 2020-06-12 23:28:10 by Andres Freund <andres at anarazel.de>
Latest at 2026-04-09 16:02:28 by Andres Freund <andres at anarazel.de>
Latest attachment (v26a-0001-instrumentation-Show-additional-TSC-clock-sourc.patch) at 2026-04-09 16:02:28 from Andres Freund <andres at anarazel.de>
Attachment (v26a-0001-instrumentation-Show-additional-TSC-clock-sourc.patch) at 2026-04-09 16:02:28 from Andres Freund <andres at anarazel.de> (Patch: Yes)
Attachment (v25-0001-instrumentation-Avoid-CPUID-0x15-0x16-for-Hyperv.patch) at 2026-04-09 04:36:48 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v24-0001-instrumentation-Show-additional-TSC-clock-source.patch) at 2026-04-08 19:25:54 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v23-0001-tsm_system_time-Avoid-repeated-calling-of-INSTR_.patch) at 2026-04-08 06:33:52 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v22-0001-instrumentation-Standardize-ticks-to-nanosecond-.patch) at 2026-04-07 07:04:51 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v21-0005-instrumentation-ARM-support-for-fast-time-measur.patch) at 2026-04-07 03:41:46 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v20-0005-instrumentation-ARM-support-for-fast-time-measur.patch) at 2026-04-06 11:25:36 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v19-0004-pg_test_timing-Also-test-RDTSC-RDTSCP-timing-and.patch) at 2026-04-06 01:47:51 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v18-0003-instrumentation-Use-Time-Stamp-Counter-TSC-on-x8.patch) at 2026-04-04 18:59:41 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v17-0005-instrumentation-ARM-support-for-fast-time-measur.patch) at 2026-04-04 09:21:14 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v16-0002-Allow-retrieving-x86-TSC-frequency-flags-from-CP.patch) at 2026-04-02 23:16:13 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v15-0001-Check-for-HAVE__CPUIDEX-and-HAVE__GET_CPUID_COUN.patch) at 2026-04-02 08:50:08 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v14-0005-pg_test_timing-Also-test-RDTSC-RDTSCP-timing-and.patch) at 2026-03-26 01:17:44 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v13-0001-Refactor-handling-of-x86-CPUID-instructions.patch) at 2026-03-24 07:16:07 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v12-0002-Check-for-HAVE__CPUIDEX-and-HAVE__GET_CPUID_COUN.patch) at 2026-03-22 18:13:11 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v11-0001-Refactor-handling-of-x86-CPUID-instructions.patch) at 2026-03-11 09:11:17 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v10-0002-pg_test_timing-Reduce-per-loop-overhead.patch) at 2026-03-03 10:29:06 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (nocfbot-architecture-macros-v1.patch) at 2026-02-25 11:15:49 from John Naylor <johncnaylorls at gmail.com> (Patch: Yes)
Attachment (v9-0001-Check-for-HAVE__CPUIDEX-and-HAVE__GET_CPUID_COUNT.patch) at 2026-02-25 10:00:35 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v8-0004-pg_test_timing-Also-test-RDTSC-RDTSCP-timing-and-.patch) at 2026-02-23 15:24:57 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (v7-0003-Timing-Use-Time-Stamp-Counter-TSC-on-x86-64-for-f.patch) at 2026-02-13 04:11:12 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v6-0001-Check-for-HAVE__CPUIDEX-and-HAVE__GET_CPUID_COUNT.patch) at 2026-02-12 16:05:27 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v5-0001-Check-for-HAVE__CPUIDEX-and-HAVE__GET_CPUID_COUNT.patch) at 2026-02-01 03:14:56 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v4-0002-Use-time-stamp-counter-to-measure-time-on-Linux-x.patch) at 2026-01-31 20:11:33 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v3-0003-Add-GUC.patch) at 2026-01-11 19:26:17 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (v13-0002-pg_test_timing-Also-test-fast-timing-and-report-time.patch) at 2025-12-04 08:07:20 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (v12-0002-pg_test_timing-Also-test-fast-timing-and-report-time.patch) at 2025-12-03 09:50:15 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (v12-0001-cpuidex-check-Support-detecting-newer-GCC-versio.patch) at 2025-10-19 18:16:20 from Ãlvaro Herrera <alvherre at kurilemu.de> (Patch: Yes)
Attachment (v11-0003-pg_test_timing-Add-fast-flag-to-test-fast-timing.patch) at 2025-07-27 19:50:54 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v10-0001-instr_time-Add-INSTR_TIME_SET_SECONDS-INSTR_TIME.patch) at 2025-03-01 07:45:58 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v9-0001-instr_time-Add-INSTR_TIME_SET_SECONDS-INSTR_TIME_.patch) at 2023-02-20 10:36:32 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (v8-0001-instr_time-Add-INSTR_TIME_SET_SECONDS-INSTR_TIME_.patch) at 2023-02-14 11:11:01 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (v7-0001-instr_time-Add-INSTR_TIME_SET_SECONDS-INSTR_TIME_.patch) at 2023-01-24 13:30:34 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (v9-0001-instr_time-Add-INSTR_TIME_SET_SECONDS-INSTR_TIME_.patch) at 2023-01-21 05:31:57 from Andres Freund <andres at anarazel.de> (Patch: Yes)
Attachment (v8-0001-Zero-initialize-instr_time-uses-causing-compiler-.patch) at 2023-01-21 00:40:32 from Andres Freund <andres at anarazel.de> (Patch: Yes)
Attachment (v7-0001-Zero-initialize-instr_time-uses-causing-compiler-.patch) at 2023-01-17 16:47:58 from Andres Freund <andres at anarazel.de> (Patch: Yes)
Attachment (0001-Change-instr_time-to-just-store-nanoseconds-v6.patch) at 2023-01-04 12:02:05 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (0001-Change-instr_time-to-just-store-nanoseconds-v5.patch) at 2023-01-03 08:38:20 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (0001-Change-instr_time-to-just-store-nanoseconds-v4.patch) at 2023-01-02 13:28:20 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (0001-WIP-Change-instr_time-to-just-store-nanoseconds-v3.patch) at 2022-11-19 20:06:23 from David Geier <geidav.pg at gmail.com> (Patch: Yes)
Attachment (v2-0002-WIP-Use-cpu-reference-cycles-via-rdtsc-to-measure.patch) at 2022-07-01 08:23:01 from Lukas Fittl <lukas at fittl.com> (Patch: Yes)
Attachment (v1-0001-WIP-Change-instr_time-to-just-store-nanoseconds-t.patch) at 2020-06-12 23:28:10 from Andres Freund <andres at anarazel.de> (Patch: Yes)

History

When	Who	What
2024-02-01 18:44:02	vigneshwaran C (vignesh.postgres)	Closed in commitfest 2024-01 with status: Returned with feedback
2024-01-27 02:51:50	vigneshwaran C (vignesh.postgres)	New status: Waiting on Author
2023-12-04 09:17:14	John Naylor (john.naylor)	Closed in commitfest 2023-11 with status: Moved to next CF
2023-10-02 11:05:55	Peter Eisentraut (petere)	Closed in commitfest 2023-09 with status: Moved to next CF
2023-08-02 19:34:54	Daniel Gustafsson (d_gustafsson)	Closed in commitfest 2023-07 with status: Moved to next CF
2023-04-09 02:31:38	Greg Stark (stark)	Closed in commitfest 2023-03 with status: Moved to next CF
2023-03-30 14:03:04	Hannu Krosing (hannukrosing)	Added hannukrosing as reviewer
2023-01-31 16:16:31	vigneshwaran C (vignesh.postgres)	Closed in commitfest 2023-01 with status: Moved to next CF
2023-01-06 05:44:48	Lukas Fittl (lfittl)	Added lfittl as reviewer
2023-01-02 21:03:41	David Geier (geidav)	Changed authors to Andres Freund (andresfreund), Lukas Fittl (lfittl), David Geier (geidav)
2023-01-02 21:02:34	David Geier (geidav)	Closed in commitfest 2022-09 with status: Moved to next CF
2023-01-02 21:02:21	David Geier (geidav)	New status: Needs review
2022-11-18 10:32:57	David Geier (geidav)	Removed geidav from reviewers
2022-11-18 10:32:47	David Geier (geidav)	Added geidav as reviewer
2022-10-12 08:35:29	Michael Paquier (michael-kun)	Closed in commitfest 2022-09 with status: Returned with feedback
2022-10-12 08:33:55	Michael Paquier (michael-kun)	New status: Waiting on Author
2022-08-01 21:23:42	Jacob Champion (jchampion)	Closed in commitfest 2022-07 with status: Moved to next CF
2022-07-01 08:24:29	Lukas Fittl (lfittl)	Changed authors to Andres Freund (andresfreund), Lukas Fittl (lfittl)
2022-07-01 08:24:29	Lukas Fittl (lfittl)	Changed targetversion to 16
2022-07-01 08:24:07	Lukas Fittl (lfittl)	Attached mail thread 20200612232810.f46nbqkdhbutzqdg@alap3.anarazel.de
2022-07-01 08:24:07	Lukas Fittl (lfittl)	Created patch record

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PL/B Language Development and Support

Reduce timing overhead of EXPLAIN ANALYZE using rdtsc

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