Solved

SQL Server 2005: Sudden Performance Degradation on Database Mirror

Posted on 2012-03-15
1
322 Views
Last Modified: 2012-07-09
Currently looking into an issue on a SQL Server 2005 (x64 Ent SP2 CU13) database mirror environment that suffers a significant performance degradation at regular intervals. This degradation occurs suddenly over a period of 5 minutes.

Failing over to the other database ALWAYS clears the issue, suggesting that there is a high probability of this being a caching issue.

Examining the various caches shows that the TokenAndPermUserStore is approaching 1GB in size; spinlock statistics also show a large number of spins, collisions and backoffs (this is in fact a negative number, not seen that before) for MUTEX.

I am aware that there were performance issues associated with the TokenAndPermUserStore cache that should have been resolved by the above build if memory serves correctly but the experience of other DBAs highlighted in various forums suggests that this may not be the case.

Has anybody seen any similar issues or can offer confirmation as to what build of SQL 2005 provided a concrete fix for the security cache issue?
0
Comment
Question by:campbell1972
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 69

Accepted Solution

by:
Scott Pletcher earned 500 total points
ID: 37725362
http://support.microsoft.com/kb/959823

Offers some suggestions.
0

Featured Post

Optimize your web performance

What's in the eBook?
- Full list of reasons for poor performance
- Ultimate measures to speed things up
- Primary web monitoring types
- KPIs you should be monitoring in order to increase your ROI

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I've encountered valid database schemas that do not have a primary key.  For example, I use LogParser from Microsoft to push IIS logs into a SQL database table for processing and analysis.  However, occasionally due to user error or a scheduled task…
In this article we will get to know that how can we recover deleted data if it happens accidently. We really can recover deleted rows if we know the time when data is deleted by using the transaction log.
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…

630 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question