[DOCS-7669] wiredTigerCacheSizeGB, inMemorySizeGB default and floor lowered and can now be specified as a float Created: 16/Apr/16  Updated: 06/Dec/22  Resolved: 20/Oct/16

Status: Closed
Project: Documentation
Component/s: manual
Affects Version/s: None
Fix Version/s: 3.3.5

Type: Task Priority: Critical - P2
Reporter: Daniel Pasette (Inactive) Assignee: Kay Kim (Inactive)
Resolution: Done Votes: 0
Labels: docs-3.4
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Documented
documents SERVER-23658 Lower default wiredTigerCacheSizeGB t... Closed
documents SERVER-23391 Improve behavior when running under W... Closed
documents SERVER-23624 Allow wiredTigerCacheSizeGB to be spe... Closed
Participants:
Days since reply: 7 years, 17 weeks ago
Story Points: 0.25

 Description   

See: SERVER-23624, SERVER-23658, SERVER-23624

The minimum floor for wiredTigerCacheSizeGB has been lowered from 1GB to 256MB to better support low memory machines. Also, the default setting has been lowered from 60% to 50% of available memory (I believe the documentation was never updated to reflect the 60% change made in 3.2, so this may be a no-op).

To better support fine grained control of the cache size, it is also now possible to specify the setting as a float, for example --wiredTigerCacheSizeGB 2.4, etc.

The maximum cache size remains 10TB.

These settings are the same for both the WiredTiger and the inMemory storage engine. This change is onlyl in effect for current master which will become 3.4.0



 Comments   
Comment by Kay Kim (Inactive) [ 20/Oct/16 ]

xgen-internal-githook Githook User added a comment - Oct 19 2016 09:16:10 PM GMT-0400
Author:

{u'username': u'kay-kim', u'name': u'kay', u'email': u'kay.kim@10gen.com'}

Message: DOCS-7669 WT cache setting values
Branch: master
https://github.com/mongodb/docs/commit/44b7172d018fe4c5134dca4dd576f68138281c78

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