- A SQL Server process experiences excessive CPU usage.
- Queries take a long time to be completed.
- Applications or SQL Server Agent jobs experience query time-outs or connection time-outs.
- A SQL Server process is restarted by the Cluster service.
- Elevated values for the SOS_PHYS_PAGE_CACHE wait type when you query the sys.dm_os_wait_stats dynamic management view (DMV)
- Elevated values for the CMEMTHREAD wait type and SOS_SUSPEND_QUEUE spinlock when you query the sys.dm_os_spinlock_stats DMV
Cumulative update informationThe issue was first fixed in the following cumulative update of SQL Server.
Hotfix information A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.
If the hotfix is available for download, there is a "Hotfix Download Available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.
Note If additional problems occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and problems that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website: Note The "Hotfix Download Available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
Important This fix is recommended for any SQL Server instance that is installed on a NUMA system, regardless of the SQL Server affinity mask settings. This fix addresses the AWAY processing performance bottleneck in the SQL Server memory manager.
The issue was first fixed in the following cumulative update of SQL Server.
Note This workaround may be limited in its effect. We recommend that you apply the hotfix to resolve the problems that are described in the "Symptoms" section.
Article ID: 2926223 - Last Review: 27 Jun 2014 - Revision: 1