[SERVER-8762] Large one-time spike in DB write lock micros Created: 27/Feb/13  Updated: 10/Dec/14  Resolved: 19/Mar/14

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: 2.2.1
Fix Version/s: None

Type: Bug Priority: Major - P3
Reporter: John Morales Assignee: Unassigned
Resolution: Cannot Reproduce Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

Linux ip-10-2-29-40 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_49


Operating System: Linux
Participants:

 Description   

A DB-specific write lock saw a one-time ~213 day spike in micros between a 1 minute span. (37008987922471 -> 55455750947083)

First observed in MMS as a 34m spike in lock %, but ultimately traced back to serverStatus changes between consecutive MMS agent pings.

Believe this has been reported by other clients on MMS side; will update ticket if I find more instances of lock % spikes.



 Comments   
Comment by Stennie Steneker (Inactive) [ 19/Mar/14 ]

Hi John,

Given the lack of definitive details to reproduce/investigate this issue, I'm going to close it.

It's possible this is more of a reporting anomaly in MMS than a server issue; if you have any further context to add or suggestions on how to reproduce please comment.

Thanks,
Stephen

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