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What is sysmain.dll?

Part of Superfetch-Diensthost by Microsoft

(sysmain.dll is a system file that is installed with Windows)
Download Boost and enjoy your PC. Speed up Superfetch-Diensthost and optimize your PC.

How is sysmain.dll loaded?

Scheduled task - sysmain.dll is launched automatically by registering itself into the Windows Task Scheduler under the task name 'WsSwapAssessmentTask'. Task Scheduler provides the ability to schedule the launch of programs or scripts at pre-defined times or after specified time intervals or even with event-based triggers.
Autoplay handler - sysmain.dll is typically associtated with identifier name of MSCreateRdbCache with and identifier of SOFTWARE\Microsoft\Windows\ CurrentVersion\Explorer\AutoplayHandlers\Handlers\MSCreateRdbCache. Autoplay will scan removable media, when it arrives, looking for media content types (music, graphics, or video). When a removable media arrives, Windows determines what actions to perform by evaluating the content and comparing it to registered handlers for that content. An application will register a handler for Autoplay events associated with a media type.
Hosted service - sysmain.dll is typically associtated with identifier name of ede27eace742ee2888c5dd36400a2ec0 with and identifier of SysMain. A Windows Hosted Service is a service that is implemented as dynamically-linked library (DLL) run under the (Service Host) SvcHost process.

Community

What is the community is seeing?What is the community is doing?
About 0.2% of all Boost users have the sysmain.dll file.Of the 0.2% of sysmain.dll users, less than 1% have disabled it.
How resource intensive is the loaded module sysmain.dll?
Comparison based on the average resource utilization across all programs.
                              0.18952720% CPU15793.9%
Average thread CPU utilization across all loaded modules is 0.00120%.
175 context switches/sec1166.7%
Average context switches for all programs is 15 per second.
Typical file (disk image) location:
sysmain.dll

What else is related?

What Windows OS versions does this run on?

Windows 8 (6.2.9200.0)
Windows 8 Enterprise (6.2.9200.0)
Windows 8 Pro (6.2.9200.0)
Windows 8 Pro with Media Center (6.2.9200.0)
Windows 8 Single Language (6.2.9200.0)

About Microsoft Corporation

Microsoft, founded in 1975 by Bill Gates and Paul Allen, is a veteran software company, best known for its Microsoft Windows operating system and the Microsoft More...
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File details

File name: sysmain.dll
Publisher: Microsoft Corporation (verified)
Name: Superfetch-Diensthost
Description: Betriebssystem Microsoft® Windows®
Version: 6.2.9200.16384 (win8_rtm.120725-1247)
Product version: 6.2.9200.16384
Size: 1.27 MB
Original file name: sysmain.dll.mui
Windows file protection: Yes

Resource utilization

Total CPU: 0.1895271984%
Privileged CPU: 0.1681021149%
User CPU: 0.0214250835%
CPU Cycle count /sec: 4,519,924
Context switches /sec: 175
Module memory size: 1.29 MB

Scheduled task details

Name: WsSwapAssessmentTask
Command: \Microsoft\Windows\Sysmain\WsSwapAssessmentTask

Autoplay handler details

Name: MSCreateRdbCache
Command: SOFTWARE\Microsoft\Windows\ CurrentVersion\Explorer\AutoplayHandlers\Handlers\MSCreateRdbCache

Hosted service details

Name: ede27eace742ee2888c5dd36400a2ec0
Command: SysMain

Image hashes

MD5: a06cb9269d29ee3d0f3f5630abb660b8
SHA-1: 99e22f95e9aea9e9d3b01335ad46af3eb5f2c248
SHA-256: 519a01fc7d9414b26ccbc23e7fb1ceaf1c91cd173b4f4a4025f8316b7460c584

PE image details

CLR assembly: Yes
CLR NGENed: No
Langauge*: Microsoft Visual C# / Basic .NET
File packed: No
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