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Home > Success Center > Database Performance Analyzer (DPA) > 100% CPU usage on MSSQL server monitored by DPA

100% CPU usage on MSSQL server monitored by DPA

Table of contents

Overview

The CPU usage goes to 100% on a Microsoft SQL Server that uses SSD storage to host one or more instances you are monitoring. This causes the server and its instances to have high signal waits.

Cause

There is a known issue regarding high CPU usage and the Microsoft SQL Server I/O handling mechanism that creates high I/O wait times.

Resolution

As a workaround, disable I/O statistics in SolarWinds DPA for the instances hosted on that MSSQL Server. The easiest way is to disable the IO_STATS_POLL_ENABLED option. You can do this for individual instances or for all instances.

To disable I/O statistics for individual instances 

  1. Click the DB Instance Options tab.
  2. Click the Support Options checkbox.
  3. Select the database instance from the dropdown.
  4. Click the IO_STATS_POLL_ENABLED option.
  5. In Edit Option, select New Value: False.
  6. Click Update.
  7. Restart monitoring on the database instance .
To disable I/O statistics for all instances
  1. Click the System Options tab.
  2. Click the Support Options checkbox.
  3. Click the IO_STATS_POLL_ENABLED option.
  4. In Edit Option, select New Value: False.
  5. Click Update.
  6. Restart all monitors. 

Last modified
19:07, 22 Jun 2016

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