[SERVER-81791] Investigate overhead from memory allocations Created: 03/Oct/23 Updated: 25/Jan/24 |
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| Status: | Backlog |
| Project: | Core Server |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Task | Priority: | Major - P3 |
| Reporter: | Anton Korshunov | Assignee: | Backlog - Query Optimization |
| Resolution: | Unresolved | Votes: | 0 |
| Labels: | M9 | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Assigned Teams: |
Query Optimization
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| Participants: |
| Description |
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While investigating performance regressions in Bonsai M2 we observed a large amount of memory allocations while optimizing a query. In SERVER-80582 we observed that Bonsai had a significantly higher memory stall rate in a CPU pipeline, which can also indicate that the memory management is too heavy. We should look at this issue further and see what changes may be necessary to fix it. |