Details
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Bug
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Status: Closed
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Major - P3
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Resolution: Fixed
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2.8.0-rc2
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Minor Change
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Linux
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v4.0, v3.6
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(copied to CRM)
Description
The memory size is taken into account within various components today:
- We set the default WiredTiger cache_size to approximately 1/2 of the memory size
- When ephemeral storage is in use we consider the memory limit in place to determine the default oplog size
- We set the tcmalloc cache size to 1/8th of the available memory
In all of these cases we should take the actual memory constraint that we're operating under into account rather than the total system memory – for example when running MongoDB within containers.
Attachments
Issue Links
- is depended on by
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SERVER-39966 Report both total actual system memory and cgroup memory limit in hostInfo
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- Closed
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- is documented by
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- Closed
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- is related to
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- Closed
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SERVER-52596 Detect memLimitMB in K8S pod and inform WiredTigerCacheSize calculation for pod RAM instead of total system RAM
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- Closed
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- related to
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- Closed
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- Closed
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