diff options
| author | Thomas Munro | 2020-07-31 02:15:18 +0000 |
|---|---|---|
| committer | Thomas Munro | 2020-07-31 02:29:52 +0000 |
| commit | c5315f4f44843c20ada876fdb0d0828795dfbdf5 (patch) | |
| tree | b94c24609a31ae7243b217ae7d5358c8cff8fe20 /contrib | |
| parent | e3931d01f3afef14703827eda1dad0a3fb3b5d07 (diff) | |
Cache smgrnblocks() results in recovery.
Avoid repeatedly calling lseek(SEEK_END) during recovery by caching
the size of each fork. For now, we can't use the same technique in
other processes, because we lack a shared invalidation mechanism.
Do this by generalizing the pre-existing caching used by FSM and VM
to support all forks.
Discussion: https://postgr.es/m/CAEepm%3D3SSw-Ty1DFcK%3D1rU-K6GSzYzfdD4d%2BZwapdN7dTa6%3DnQ%40mail.gmail.com
Diffstat (limited to 'contrib')
| -rw-r--r-- | contrib/pg_visibility/pg_visibility.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/contrib/pg_visibility/pg_visibility.c b/contrib/pg_visibility/pg_visibility.c index 68d580ed1e0..e731161734a 100644 --- a/contrib/pg_visibility/pg_visibility.c +++ b/contrib/pg_visibility/pg_visibility.c @@ -392,7 +392,7 @@ pg_truncate_visibility_map(PG_FUNCTION_ARGS) check_relation_relkind(rel); RelationOpenSmgr(rel); - rel->rd_smgr->smgr_vm_nblocks = InvalidBlockNumber; + rel->rd_smgr->smgr_cached_nblocks[VISIBILITYMAP_FORKNUM] = InvalidBlockNumber; block = visibilitymap_prepare_truncate(rel, 0); if (BlockNumberIsValid(block)) |