[SERVER-3806] Better replica set cache efficiency Created: 12/Sep/11 Updated: 06/Dec/22 Resolved: 27/May/22 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Performance, Replication |
| Affects Version/s: | None |
| Fix Version/s: | features we're not sure of |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Matic | Assignee: | Backlog - Replication Team |
| Resolution: | Won't Do | Votes: | 1 |
| Labels: | mongos, performance | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Environment: |
Any replica set environment |
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| Assigned Teams: |
Replication
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| Participants: |
| Description |
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http://groups.google.com/group/mongodb-user/browse_thread/thread/ded206b11dd9a31f In a nutshell, all (slave?) nodes in a replica set cache the same documents, because Mongos spreads the load across all slave nodes. This causes severe cache duplication, which leads to wasted resources (RAM) and increases IO load. |