[SERVER-6718] option to disable index prefetching as part of multithreaded replication Created: 05/Aug/12 Updated: 19/Mar/13 Resolved: 08/Aug/12 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Replication |
| Affects Version/s: | 2.2.0-rc0 |
| Fix Version/s: | 2.2.0-rc1 |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Eric Milkie | Assignee: | Eric Milkie |
| Resolution: | Done | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Description |
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For certain workloads, index prefetching for replicated ops can hurt performance on secondaries. |
| Comments |
| Comment by auto [ 08/Aug/12 ] |
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Author: {u'date': u'2012-08-08T14:46:48-07:00', u'email': u'milkie@10gen.com', u'name': u'Eric Milkie'}Message: |
| Comment by auto [ 08/Aug/12 ] |
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Author: {u'date': u'2012-08-08T08:32:39-07:00', u'email': u'milkie@10gen.com', u'name': u'Eric Milkie'}Message: New parameter replIndexPrefetch. |
| Comment by Eric Milkie [ 07/Aug/12 ] |
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Modified proposal: |
| Comment by Eric Milkie [ 06/Aug/12 ] |
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Proposal is to add another config option to the replica set config: where <behavior> can be one of ["off","_id","all"] "off" : no prefetching for indexes |