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| author | Amit Kapila <akapila@postgresql.org> | 2019-11-16 18:24:00 +0530 |
|---|---|---|
| committer | Amit Kapila <akapila@postgresql.org> | 2019-11-21 08:06:51 +0530 |
| commit | 9290ad198b15d6b986b855d2a58d087a54777e87 (patch) | |
| tree | 1758f43591a31c8b469434b8079b373872aae078 /src/include/replication/reorderbuffer.h | |
| parent | 168d2064001f704965899bb2057591271c44e57a (diff) | |
Track statistics for spilling of changes from ReorderBuffer.
This adds the statistics about transactions spilled to disk from
ReorderBuffer. Users can query the pg_stat_replication view to check
these stats.
Author: Tomas Vondra, with bug-fixes and minor changes by Dilip Kumar
Reviewed-by: Amit Kapila
Discussion: https://postgr.es/m/688b0b7f-2f6c-d827-c27b-216a8e3ea700@2ndquadrant.com
Diffstat (limited to 'src/include/replication/reorderbuffer.h')
| -rw-r--r-- | src/include/replication/reorderbuffer.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/include/replication/reorderbuffer.h b/src/include/replication/reorderbuffer.h index 7c94d920fe9..0867ee9e636 100644 --- a/src/include/replication/reorderbuffer.h +++ b/src/include/replication/reorderbuffer.h @@ -402,6 +402,17 @@ struct ReorderBuffer /* memory accounting */ Size size; + + /* + * Statistics about transactions spilled to disk. + * + * A single transaction may be spilled repeatedly, which is why we keep + * two different counters. For spilling, the transaction counter includes + * both toplevel transactions and subtransactions. + */ + int64 spillCount; /* spill-to-disk invocation counter */ + int64 spillTxns; /* number of transactions spilled to disk */ + int64 spillBytes; /* amount of data spilled to disk */ }; |