Improve read_local_xlog_page_guts by replacing polling with latch-based waiting

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ID 6024
Title Improve read_local_xlog_page_guts by replacing polling with latch-based waiting
CI (CFBot) Summary
Stats (from CFBot) Patch version: v12, Patch count: 2, First patch: +18−12, All patches: +163−13
Tags Logical Replication Performance
Created 2025-09-01 12:02:06
Last modified 2026-10-20 02:04:51 (52 minutes ago)
Latest email 2026-10-18 13:07:33 (yesterday)
Status
PG20-3 (2026-11-01 – 2026-11-30): Needs review
PG20-1 (2026-07-01 – 2026-07-31): Moved to different CF
PG19-Final (2026-03-01 – 2026-04-09): Moved to different CF
PG19-4 (2026-01-01 – 2026-01-31): Moved to different CF
PG19-3 (2025-11-01 – 2025-11-30): Moved to different CF
Target version 19
Authors Xuneng Zhou (dylanzhou)
Reviewers Rui Zhao (zhaorui) Become reviewer
Committer
Links
Emails
Improve read_local_xlog_page_guts by replacing polling with latch-based waiting
First at 2025-08-27 15:23:34 by Xuneng Zhou <xunengzhou at gmail.com>
Latest at 2026-10-18 13:07:33 by Xuneng Zhou <xunengzhou at gmail.com>
Latest attachment (v12-0001-Replace-polling-with-LSN-waits-in-read_local_xlo.patch) at 2026-10-18 13:07:33 from Xuneng Zhou <xunengzhou at gmail.com>
    Attachment (v12-0001-Replace-polling-with-LSN-waits-in-read_local_xlo.patch) at 2026-10-18 13:07:33 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: No)
    Attachment (image.png) at 2026-02-02 03:16:08 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: No)
    Attachment (v10-0001-Improve-read_local_xlog_page_guts-by-replacing-p.patch) at 2025-11-07 13:48:23 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: Yes)
    Attachment (v9-0003-Improve-read_local_xlog_page_guts-by-replacing-po.patch) at 2025-10-15 08:43:29 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: Yes)
    Attachment (v8-0002-Add-infrastructure-for-efficient-LSN-waiting.patch) at 2025-10-15 00:31:01 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: Yes)
    Attachment (v7-0002-Add-infrastructure-for-efficient-LSN-waiting.patch) at 2025-10-11 03:02:51 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: Yes)
    Attachment (v6-0001-Replace-inefficient-polling-loops-in-read_local_x.patch) at 2025-10-04 07:21:07 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: Yes)
    Attachment (v5-0000-cover-letter.patch) at 2025-10-02 15:06:14 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: No)
    Attachment (v4-0000-cover-letter.patch) at 2025-09-28 13:47:06 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: No)
    Attachment (v8-0001-Implement-WAIT-FOR-command.patch) at 2025-08-28 08:22:55 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: Yes)
    Attachment (v2-0001-Improve-read_local_xlog_page_guts-by-replacing-po.patch) at 2025-08-27 15:31:03 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: Yes)
    Attachment (v8-0001-Implement-WAIT-FOR-command.patch) at 2025-08-27 15:23:34 from Xuneng Zhou <xunengzhou at gmail.com> (Patch: Yes)
History
When Who What
2026-10-20 02:04:51 Xuneng Zhou (dylanzhou) Moved from CF PG20-1 to CF PG20-3
2026-06-08 14:17:43 Rui Zhao (zhaorui) Added zhaorui as reviewer
2026-04-25 01:19:35 Xuneng Zhou (dylanzhou) Moved from CF PG19-Final to CF PG20-1
2026-02-07 03:50:12 Xuneng Zhou (dylanzhou) Moved from CF PG19-4 to CF PG19-Final
2025-12-02 12:55:19 Xuneng Zhou (dylanzhou) Moved from CF PG19-3 to CF PG19-4
2025-11-07 14:06:28 CFbot Patch does not need rebase anymore
2025-11-06 22:44:24 CFbot Patch needs rebase
2025-10-15 09:20:28 CFbot Patch does not need rebase anymore
2025-10-15 01:11:23 CFbot Patch needs rebase
2025-10-04 10:21:43 Xuneng Zhou (dylanzhou) Changed tags to Logical Replication, Performance
2025-09-28 14:09:26 CFbot Patch does not need rebase anymore
2025-09-05 10:09:21 CFbot Patch needs rebase
2025-09-01 12:02:06 Xuneng Zhou (dylanzhou) Attached mail thread CABPTF7UNft368x-RgOXkfj475OwEbp+VVO-wEXz7StgjD_=6sw@mail.gmail.com
2025-09-01 12:02:06 Xuneng Zhou (dylanzhou) Created patch record
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