diff options
| author | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2013-09-04 23:14:33 +0300 |
|---|---|---|
| committer | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2013-09-04 23:14:33 +0300 |
| commit | 375d8526f2900d0c377f44532f6d09ee06531f67 (patch) | |
| tree | 866db5b0ff2a176ff815e80ca2a72c780079bee8 /src/backend/access/spgist/spgutils.c | |
| parent | cc52d5b33ff5df29de57dcae9322214cfe9c8464 (diff) | |
| download | postgresql-375d8526f2900d0c377f44532f6d09ee06531f67.tar.gz postgresql-375d8526f2900d0c377f44532f6d09ee06531f67.zip | |
Keep heavily-contended fields in XLogCtlInsert on different cache lines.
Performance testing shows that if the insertpos_lck spinlock and the fields
that it protects are on the same cache line with other variables that are
frequently accessed, the false sharing can hurt performance a lot. Keep
them apart by adding some padding.
Diffstat (limited to 'src/backend/access/spgist/spgutils.c')
0 files changed, 0 insertions, 0 deletions