[MDEV-18233] Moving the hash_node_t to improve locality of reference Created: 2019-01-14 Updated: 2019-01-15 Resolved: 2019-01-15 |
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| Status: | Closed |
| Project: | MariaDB Server |
| Component/s: | Storage Engine - InnoDB, Storage Engine - XtraDB |
| Fix Version/s: | 10.4.2, 10.1.38, 10.0.38, 10.2.22, 10.3.13 |
| Type: | Task | Priority: | Major |
| Reporter: | Eugene Kosov (Inactive) | Assignee: | Marko Mäkelä |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | None | ||
| Description |
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While performing a search, hash_table_t reads a key and a pointer to the next node. Code will work faster if both fields reside in the same cache line. This issue was created to find inefficient hash_table_t usage and fix it by reordering fields in classes. NFC |