[MDEV-19172] Reorder fields in PFS_events and PFS_events_waits to speed up memcpy() Created: 2019-04-04 Updated: 2019-04-17 Resolved: 2019-04-17 |
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| Status: | Closed |
| Project: | MariaDB Server |
| Component/s: | OTHER |
| Fix Version/s: | 10.1.39 |
| Type: | Task | Priority: | Major |
| Reporter: | Eugene Kosov (Inactive) | Assignee: | Eugene Kosov (Inactive) |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | None | ||
| Description |
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memcpy() happens inside copy_events_waits() and copy_events_waits() is called from insert_events_waits_history() which I can sometimes see from perf top while running tests. Field reordering is pretty simple and can bring a tiny speed up. |