diff options
| -rw-r--r-- | src/backend/storage/ipc/sinvaladt.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/backend/storage/ipc/sinvaladt.c b/src/backend/storage/ipc/sinvaladt.c index 68e7160b30e..2dec668bbcd 100644 --- a/src/backend/storage/ipc/sinvaladt.c +++ b/src/backend/storage/ipc/sinvaladt.c @@ -205,6 +205,14 @@ SInvalShmemSize(void) Size size; size = offsetof(SISeg, procState); + + /* + * In Hot Standby mode, the startup process requests a procState array + * slot using InitRecoveryTransactionEnvironment(). Even though MaxBackends + * doesn't account for the startup process, it is guaranteed to get a + * free slot. This is because the autovacuum launcher and worker processes, + * which are included in MaxBackends, are not started in Hot Standby mode. + */ size = add_size(size, mul_size(sizeof(ProcState), GetMaxBackends())); return size; |