diff options
| -rw-r--r-- | doc/src/sgml/ref/explain.sgml | 5 | ||||
| -rw-r--r-- | src/backend/commands/explain.c | 7 |
2 files changed, 9 insertions, 3 deletions
diff --git a/doc/src/sgml/ref/explain.sgml b/doc/src/sgml/ref/explain.sgml index 6361a14e65d..652ece7213a 100644 --- a/doc/src/sgml/ref/explain.sgml +++ b/doc/src/sgml/ref/explain.sgml @@ -242,8 +242,9 @@ ROLLBACK; <listitem> <para> Include information on WAL record generation. Specifically, include the - number of records, number of full page images (fpi) and the amount of WAL - generated in bytes. In text format, only non-zero values are printed. + number of records, number of full page images (fpi), the amount of WAL + generated in bytes and the number of times the WAL buffers became full. + In text format, only non-zero values are printed. This parameter may only be used when <literal>ANALYZE</literal> is also enabled. It defaults to <literal>FALSE</literal>. </para> diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c index c24e66f82e1..dc4bef9ab81 100644 --- a/src/backend/commands/explain.c +++ b/src/backend/commands/explain.c @@ -4242,7 +4242,7 @@ show_wal_usage(ExplainState *es, const WalUsage *usage) { /* Show only positive counter values. */ if ((usage->wal_records > 0) || (usage->wal_fpi > 0) || - (usage->wal_bytes > 0)) + (usage->wal_bytes > 0) || (usage->wal_buffers_full > 0)) { ExplainIndentText(es); appendStringInfoString(es->str, "WAL:"); @@ -4256,6 +4256,9 @@ show_wal_usage(ExplainState *es, const WalUsage *usage) if (usage->wal_bytes > 0) appendStringInfo(es->str, " bytes=" UINT64_FORMAT, usage->wal_bytes); + if (usage->wal_buffers_full > 0) + appendStringInfo(es->str, " buffers full=%lld", + (long long) usage->wal_buffers_full); appendStringInfoChar(es->str, '\n'); } } @@ -4267,6 +4270,8 @@ show_wal_usage(ExplainState *es, const WalUsage *usage) usage->wal_fpi, es); ExplainPropertyUInteger("WAL Bytes", NULL, usage->wal_bytes, es); + ExplainPropertyInteger("WAL Buffers Full", NULL, + usage->wal_buffers_full, es); } } |