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| author | Melanie Plageman <melanieplageman@gmail.com> | 2025-10-09 16:25:50 -0400 |
|---|---|---|
| committer | Melanie Plageman <melanieplageman@gmail.com> | 2025-10-09 16:29:01 -0400 |
| commit | d96f87332b3786abd23cba47459546799c562b8c (patch) | |
| tree | 4f4fdd37f5047ec9b09dee98679983c6545999df /src/backend/access/rmgrdesc/heapdesc.c | |
| parent | 1b073cba4993b31fbf820504f297efce5d951c00 (diff) | |
Eliminate COPY FREEZE use of XLOG_HEAP2_VISIBLE
Instead of emitting a separate WAL XLOG_HEAP2_VISIBLE record for setting
bits in the VM, specify the VM block changes in the
XLOG_HEAP2_MULTI_INSERT record.
This halves the number of WAL records emitted by COPY FREEZE.
Author: Melanie Plageman <melanieplageman@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Reviewed-by: Kirill Reshke <reshkekirill@gmail.com>
Discussion: https://postgr.es/m/flat/CAAKRu_ZMw6Npd_qm2KM%2BFwQ3cMOMx1Dh3VMhp8-V7SOLxdK9-g%40mail.gmail.com
Diffstat (limited to 'src/backend/access/rmgrdesc/heapdesc.c')
| -rw-r--r-- | src/backend/access/rmgrdesc/heapdesc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/backend/access/rmgrdesc/heapdesc.c b/src/backend/access/rmgrdesc/heapdesc.c index 82b62c95de5..056beb24d40 100644 --- a/src/backend/access/rmgrdesc/heapdesc.c +++ b/src/backend/access/rmgrdesc/heapdesc.c @@ -16,6 +16,7 @@ #include "access/heapam_xlog.h" #include "access/rmgrdesc_utils.h" +#include "access/visibilitymapdefs.h" #include "storage/standbydefs.h" /* @@ -354,6 +355,11 @@ heap2_desc(StringInfo buf, XLogReaderState *record) appendStringInfo(buf, "ntuples: %d, flags: 0x%02X", xlrec->ntuples, xlrec->flags); + if (xlrec->flags & XLH_INSERT_ALL_FROZEN_SET) + appendStringInfo(buf, ", vm_flags: 0x%02X", + VISIBILITYMAP_ALL_VISIBLE | + VISIBILITYMAP_ALL_FROZEN); + if (XLogRecHasBlockData(record, 0) && !isinit) { appendStringInfoString(buf, ", offsets:"); |