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Type: Bug
Resolution: Done
Priority: Critical - P2
Fix Version/s: 3.2.10, 3.3.15
Affects Version/s: 3.2.9, 3.3.10
Component/s: WiredTiger
Labels:
- code-only

Backwards Compatibility:
Fully Compatible
Operating System:
ALL
Case:
Confidence Status:
None

Aha! Reference:
None
Tracking Level:
None
Risk Status:
None
Exec Notes:
None
Goal Name:
None
Goal Link:
None

Under some conditions when cache utilization reaches 100%, the system can go into a state where

operation rate falls to near-zero levels
application threads stall for tens of seconds, apparently attempting but not succeeding in evicting pages.

This state can persist for many minutes.

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issue.png
Sep 08 2016 05:57:51 PM UTC
216 kB
Bruce Lucas
repro.png
Sep 08 2016 05:57:51 PM UTC
228 kB
Bruce Lucas
test5-io-saturation.png
Sep 09 2016 02:32:32 AM UTC
192 kB
Michael Cahill
3.2.10-rc0_event.png
Sep 18 2016 09:36:16 AM UTC
228 kB
Dmitry Agranat
Screen Shot 2016-09-18 at 2.18.01 PM.png
Sep 18 2016 11:19:37 AM UTC
318 kB
Dmitry Agranat
Screen Shot 2016-09-18 at 4.38.53 PM.png
Sep 18 2016 01:41:19 PM UTC
193 kB
Dmitry Agranat
s25974_oplog_cache.png
Sep 19 2016 04:51:06 AM UTC
59 kB
Alexander Gorrod
s25974_new_connections.png
Sep 19 2016 04:53:41 AM UTC
63 kB
Alexander Gorrod
s25974_seen_queue.png
Sep 19 2016 05:06:24 AM UTC
70 kB
Alexander Gorrod
3.2.10-rc0-timeseries.png
Sep 21 2016 11:33:53 AM UTC
273 kB
Michael Cahill
3.2.10-rc1-timeseries.png
Sep 21 2016 11:33:53 AM UTC
256 kB
Michael Cahill
server-25974-rc0-vs-rc1-dd.tgz
Sep 21 2016 11:33:53 AM UTC
15.46 MB
Michael Cahill

is duplicated by

SERVER-26001 Insert workload stalled at 96% cache utilization

Closed

SERVER-26055 Server fills cache rapidly, even under replication only and then operates very slowing causing oplog backlog. When serving clients queries take ages to return once cache is 'full'

Closed

SERVER-26700 Threads appear to hang after migrating from MMAPv1 to WiredTiger

Closed

is related to

WT-2894 Create workload that shows negative scaling when overwhelmed

Closed

related to

WT-2924 Ensure we are doing eviction when threads are waiting for it

Closed

Assignee:: Alexander Gorrod

Reporter:: Bruce Lucas (Inactive)

Participants:: Alexander Gorrod, Bruce Lucas, Ramon Fernandez Marina

Votes:: 3 Vote for this issue

Watchers:: 30 Start watching this issue

Created:: Sep 06 2016 07:22:35 PM UTC

Updated:: Jul 31 2018 10:15:03 AM UTC

Resolved:: Sep 28 2016 07:55:50 PM UTC

GA Target Date:: None

Public Preview Target Date:: None

Private Preview Target Date:: None

Experiment Target Date:: None

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