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What is perfhost.exe?

Part of x86 Performance Counter Host by Microsoft

(perfhost.exe is a system file that is installed with Windows)
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How does perfhost.exe run?

Service - perfhost.exe runs as a background Windows service called 'PerfHost' (Host de DLL de Contador de Desempenho). This is a system service that is installed with the Windows operating system and protected with Window's File Protection. This service runs as the LOCAL SERVICE account with minimum privileges on the local computer and presents anonymous credentials on the network. Host de DLL de Contador de Desempenho 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 0.1% of all Boost users have the perfhost.exe process running.Of the 0.1% of perfhost.exe users, less than 1% have disabled it.
How resource intensive is perfhost.exe?
Comparison based on the average resource utilization across all programs.
0.00001% CPU70.3%
Average CPU utilization across all programs is 0.00001%.
          2.22 MB RAM10.3%
Average private memory utilization across all programs is 21.53 MB.
 1 /min0.0%
Average I/O read and write operations for all programs is 2,253 per minute.
Typical file (disk image) location:

Are there other versions of x86 Performance Counter Host?

Why are multiple of the same versions listed?

What else is related?

What Windows OS versions does this run on?

Windows 7 Enterprise (6.1.7600.0)
Windows 7 Home Premium (6.1.7600.0)
Windows 7 Professional (6.1.7600.0)
Windows 7 Ultimate (6.1.7600.0)
Windows 7 Ultimate N (6.1.7600.0)
Windows Seven Black Edition (6.1.7600.0)
Windows Vista (TM) Ultimate (6.1.7600.0)
Windows 7 Ultimate (6.1.7600.196608)
Windows 7 Home Premium (6.1.7601.65536)
Windows 7 Ultimate (6.1.7601.65536)
Microsoft Windows 7 Professional (6.1.7601.65536)
Microsoft Windows XP (6.1.7601.65536)

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: perfhost.exe
Publisher: Microsoft Corporation (verified)
Name: x86 Performance Counter Host
Description: Microsoft® Windows® Operating System
Version: 6.1.7600.16385 (win7_rtm.090713-1255)
Product version: 6.1.7600.16385
Size: 20.5 KB
Original file name: perfhost.exe.mui
Windows file protection: Yes

Resource utilization

CPU utilization averages
Total CPU: 0.0000481813%
Privileged CPU: 0.0000411518%
User CPU: 0.00000702951997%
Privileged CPU time: 62444.08 ms
Privileged CPU time /min: 70 ms
CPU cycle count: 661,760,908
CPU cycle count /min: 764,072
Memory utilization averages
Committed memory: 38.51 MB
Peak committed memory: 40.64 MB
Paged memory: 2.22 MB
Peak paged memory: 3.97 MB
Paged system memory: 70.08 KB
Non-paged system memory: 8.78 KB
Working set memory: 4.28 MB
Peak working set memory: 6.05 MB
Min working set memory: 2.83 MB
Private memory: 2.22 MB
Page faults: 930
Page faults /min: 4
Process I/O averages
Total read operations: 2
Read operations /min: 1
Total read transfer: 5.03 KB
Read transfer /min: 4 Bytes
Total other operations: 602
Other operations /min: 1
Total other transfer: 1.01 KB
Other Transfer /min: 0 Bytes
Handle count average: 76
Thread count average: 6
Thread resource averages

Process details

Runs as (owner): Local Service
Integrety level: System
Windows platform: 64-bit
Runs as a service: Yes
Parent Process
Process Command

Service details

Name: Host de DLL de Contador de Desempenho
Service name: PerfHost
Service type: Win32OwnProcess

Image hashes

MD5: e495e408c93141e8fc72dc0c6046ddfa
SHA-1: bae3a88e2b0ff5dfb8e8ae126bb2a65170bbff81
SHA-256: 489b957dada0dc128a09468f1ad082dcc657e86053208ea06a12937be86fb919

PE image details

File entropy: 5.57792
File packed: No
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