database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-12-21 05:21:08 +03:00
Code Activity

Extend relations multiple blocks at a time to improve scalability.

Browse Source 
Contention on the relation extension lock can become quite fierce when
multiple processes are inserting data into the same relation at the same
time at a high rate.  Experimentation shows the extending the relation
multiple blocks at a time improves scalability.

Dilip Kumar, reviewed by Petr Jelinek, Amit Kapila, and me.
This commit is contained in:
Robert Haas
2016-04-08 02:04:46 -04:00
parent 8643b91ecf
commit 719c84c1be
7 changed files with 271 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/include/storage/freespace.h
View File

@@ -32,5 +32,9 @@ extern void XLogRecordPageWithFreeSpace(RelFileNode rnode, BlockNumber heapBlk,
extern void FreeSpaceMapTruncateRel(Relation rel, BlockNumber nblocks);
extern void FreeSpaceMapVacuum(Relation rel);
extern void UpdateFreeSpaceMap(Relation rel,
BlockNumber firtsBlkNum,
BlockNumber lastBlkNum,
Size freespace);
#endif /* FREESPACE_H_ */