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What is tagsrv.exe?

Part of TAGSRV by National Instruments

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How does tagsrv.exe run?

Service - tagsrv.exe runs as a background Windows service called 'NITaggerService' (NI Variable Engine). This service runs as the SYSTEM account with extensive privileges on the local computer, and acts as the computer on the network. NI Variable Engine runs as a program that can be started by the Service Controller and that obeys the service control protocol. This type of service runs in a process by itself.


What is the community is seeing?What is the community is doing?
About 0.4% of all Boost users have the tagsrv.exe process running.Of the 0.4% of tagsrv.exe users, 11.1% have disabled it.
How resource intensive is tagsrv.exe?
Comparison based on the average resource utilization across all programs.
0.00000% CPU30.0%
Average CPU utilization across all programs is 0.00001%.
9.16 MB RAM42.5%
Average private memory utilization across all programs is 21.53 MB.
199 context switches/sec199.0%
Average context switches for all programs is 100 per second.
Typical file (disk image) location:
C:\Program Files\national instruments\shared\tagger\tagsrv.exe

Are there other versions of TAGSRV?

What modules are loaded?

A module is a dynamic link library (DLL) or an executable file that is loaded into the process. Below is a list of non-system modules that are loaded by TAGSRV.

What else is related?

What Windows OS versions does this run on?

Windows 8 Single Language (6.2.9200.0)
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File details

File name: tagsrv.exe
Publisher: National Instruments Corporation (verified)
Description: National Instruments Variable Engine
Version: 13.0.0f0
Size: 671.82 KB
Original file name: tagsrv.exe

Digital certificate

Certificate authority: VeriSign
Effective date: 3/12/2010
Expiration date: 5/24/2013

Resource utilization

CPU utilization averages
Total CPU: 0.0000560290%
Privileged CPU: 0.0000530251%
User CPU: 0.00000300388535%
Privileged CPU time: 5812.5 ms
Privileged CPU time /min: 0 ms
CPU cycle count: 585,299,619
Context switches /sec: 199
Memory utilization averages
Committed memory: 107.53 MB
Peak committed memory: 112.58 MB
Paged memory: 9.16 MB
Peak paged memory: 9.35 MB
Paged system memory: 134.47 KB
Non-paged system memory: 40.66 KB
Working set memory: 11.89 MB
Peak working set memory: 13.98 MB
Min working set memory: 11.77 MB
Private memory: 9.16 MB
Page faults: 4,331
Page faults /min: 0
Process I/O averages
Total read operations: 155
Total read transfer: 11.56 KB
Total write operations: 1
Total write transfer: 103 Bytes
Total other operations: 25,451
Total other transfer: 392.11 KB
Handle count average: 328
Thread count average: 37
Thread resource averages

Process details

Runs as (owner): System
Integrety level: System
Windows platform: 64-bit
Runs as a service: Yes
Parent Process
Process Command
"C:\Program Files\National Instruments\Shared\Tagger\tagsrv.exe"

Service details

Name: NI Variable Engine
Service name: NITaggerService
Service type: Win32OwnProcess
Description: “Hosts network published shared variables and I/O servers. If this service is stopped or disabled, shared variables and I/O servers will not function.”

Network connectivity

UDP: LISTENING on port 6004
TCP: localhost on port 49179

Image hashes

MD5: 343b7af567c0b1e0b76e6c0f448ef42d
SHA-1: 7d6e6098e441a54bc3faeb4358e87f55507ee0c6

PE image details

File packed: No
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