[SERVER-32041] amend stableCandidates logic from replcoord Created: 20/Nov/17 Updated: 30/Oct/23 Resolved: 22/Nov/17 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Replication |
| Affects Version/s: | None |
| Fix Version/s: | 3.6.0-rc6, 3.7.1 |
| Type: | Task | Priority: | Major - P3 |
| Reporter: | Eric Milkie | Assignee: | Eric Milkie |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
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| Backwards Compatibility: | Fully Compatible | ||||||||||||||||
| Backport Requested: |
v3.6
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| Sprint: | Storage 2017-12-04 | ||||||||||||||||
| Participants: | |||||||||||||||||
| Linked BF Score: | 0 | ||||||||||||||||
| Description |
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Changing the stableCandidates logic to avoid needing a candidate for every primary write will result in a performance boost. |
| Comments |
| Comment by Githook User [ 27/Nov/17 ] |
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Author: {'name': 'Eric Milkie', 'username': 'milkie', 'email': 'milkie@10gen.com'}Message: |
| Comment by Githook User [ 27/Nov/17 ] |
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Author: {'name': 'Eric Milkie', 'username': 'milkie', 'email': 'milkie@10gen.com'}Message: Attempt at making setMyLastAppliedOpTime faster, when triggered by a write on a primary node. (cherry picked from commit 17dfc88333df0be6bb7711efb1885a21a3a697b9) |
| Comment by Githook User [ 22/Nov/17 ] |
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Author: {'name': 'Eric Milkie', 'username': 'milkie', 'email': 'milkie@10gen.com'}Message: Attempt at making setMyLastAppliedOpTime faster, when triggered by a write on a primary node. |
| Comment by Susan LoVerso [ 21/Nov/17 ] |
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milkie Here are some FTDC stats from a run with your changes compared to mongodb master (with current WT develop). I ran the TTL workload three times for three minutes each time. Your change results in a 50% degradation compared to master. Your changes definitely cause a lot more LAS activity compared to mongodb master. In this chart, the run with your changes is on the left and mongodb master is on the right. |