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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
Public

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.

Premium
Internal
Rating:
Category:
SPEC
Solution Id:
1116132
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