Details
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Improvement
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Resolution: Done
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Major - P3
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None
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None
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Fully Compatible
Description
SERVER-16551 and SERVER-16517 both indicate that for many mongodb workloads, the default cap on the size of all per-thread caches imposed by tcmalloc is too low. We should raise the cap, and expose an option to allow the administrator to tune it at start-up and runtime.
Specifically, mongod should present the tcmalloc property tcmalloc.max_total_thread_cache_bytes via a tcmallocMaxTotalThreadCacheBytes argument to setParameter, and tcmalloc.aggressive_memory_decommit via tcmallocAggressiveMemoryDecommit.
Attachments
Issue Links
- is duplicated by
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SERVER-35046 Add parameter to set tcmalloc aggressive decommit
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- Closed
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- is related to
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- Closed
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- related to
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SERVER-17105 Server fails to start under Valgrind: 'Failed to set tcmalloc.max_total_thread_cache_bytes'
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- Closed
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