VSAPI engine multi-threaded scanning support in OfficeScan (OSCE)

- Updated:
- 2 Dec 2016
- Product/Version:
- OfficeScan 10.6
- OfficeScan 11.0
- OfficeScan XG.All
- Platform:
- Windows 10
- Windows 10 32-bit
- Windows 10 64-bit
- Windows 2003 32-Bit
- Windows 2003 64-Bit
- Windows 2003 Datacenter 64-bit
- Windows 2003 Enterprise
- Windows 2003 Enterprise 64-bit
- Windows 2003 Server R2
- Windows 2003 Standard
- Windows 2003 Standard 64-bit
- Windows 2008 32-Bit
- Windows 2008 64-Bit
- Windows 2008 Datacenter
- Windows 2008 Datacenter 64-bit
- Windows 2008 Enterprise
- Windows 2008 Enterprise 64-bit
- Windows 2008 Server Core
- Windows 2008 Server R2 Enterprise
- Windows 2008 Standard
- Windows 2008 Standard 64-bit
- Windows 2008 Web Server Edition
- Windows 2008 Web Server Edition 64-bit
- Windows 2012
- Windows 2012 Datacenter R2
- Windows 2012 Enterprise
- Windows 2012 Enterprise R2
- Windows 2012 Server Essential R2
- Windows 2012 Server Essentials
- Windows 2012 Standard
- Windows 2012 Standard R2
- Windows 2012 Web Server Edition
- Windows 2016
- Windows 7 32-Bit
- Windows 7 64-Bit
- Windows 8 32-Bit
- Windows 8 64-Bit
- Windows 8.1 32-Bit
- Windows 8.1 64-Bit
- Windows Vista 32-bit
- Windows Vista 64-bit
- Windows XP Home
- Windows XP Professional
- Windows XP Professional 64-bit

Summary

Machine performance issues appear when real-time scanning is enabled. To help address these, administrators need know the following about the Virus Scan Application Programming Interface (VSAPI) scan engine:

Does OSCE real-time scanning perform sequential scanning or does it do parallel scanning using a multi-thread approach?
Are there any available settings to adjust the number of threads used for scanning?

Details

The scan engine includes three drivers: tmpreflt.sys, tmxpflt.sys, and vsapint.sys.

The VSAPI scan engine runs in multi-threaded mode. Hooked file Input/Output will be put into a queue and 10 scanning threads are available to process the queue.
There are no available settings to adjust the number of threads used.

If performance issues are encountered during real-time scans, refer to the Recommended solutions to high CPU utilization caused by NTRTScan or DBServer.exe KB article to troubleshoot the issue.

Rating:

Category:

SPEC

Solution Id:

1116132

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