v2-0002-Fix-XLOG-buffers-auto-tune-for-different-XLOG_BLC.patch
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Filename: v2-0002-Fix-XLOG-buffers-auto-tune-for-different-XLOG_BLC.patch
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Format: format-patch
Series: patch v2-0002
Subject: Fix XLOG buffers auto-tune for different XLOG_BLCKSZ
| File | + | − |
|---|---|---|
| src/backend/access/transam/xlog.c | 1 | 1 |
From 72a70460d6966f9895ea874514c77a9405859057 Mon Sep 17 00:00:00 2001
From: Andrew Pogrebnoi <absourd.noise@gmail.com>
Date: Tue, 17 Feb 2026 21:12:21 +0200
Subject: [PATCH v2 2/2] Fix XLOG buffers auto-tune for different XLOG_BLCKSZ
Before this change, XLOG buffers calculation in relation to
shared_buffers made sense only if XLOG_BLCKSZ the same as BLCKSZ
---
src/backend/access/transam/xlog.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 13ec6225b85..d37e85a4077 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -4694,7 +4694,7 @@ XLOGChooseNumBuffers(void)
{
int xbuffers;
- xbuffers = NBuffers / 32;
+ xbuffers = ((NBuffers * BLCKSZ) / XLOG_BLCKSZ) / 32;
if (xbuffers > (wal_segment_size / XLOG_BLCKSZ))
xbuffers = (wal_segment_size / XLOG_BLCKSZ);
if (xbuffers < 8)
--
2.43.0