diff options
| -rw-r--r-- | src/backend/access/transam/README | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/access/transam/README b/src/backend/access/transam/README index 22c8ae97551..6de2378748a 100644 --- a/src/backend/access/transam/README +++ b/src/backend/access/transam/README @@ -324,7 +324,7 @@ changes much more often than its xid, having GetSnapshotData look at xmins can lead to a lot of unnecessary cacheline ping-pong. Instead GetSnapshotData updates approximate thresholds (one that guarantees that all deleted rows older than it can be removed, another determining that deleted -rows newer than it can not be removed). GlobalVisTest* uses those threshold +rows newer than it can not be removed). GlobalVisTest* uses those thresholds to make invisibility decision, falling back to ComputeXidHorizons if necessary. |