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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.


What is the community is seeing?What is the community is doing?
About 0.6% of all Boost users have the perfhost.exe process running.Of the 0.6% 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.
0.00004% CPU393.1%
Average CPU utilization across all programs is 0.00001%.
          5.5 MB RAM25.5%
Average private memory utilization across all programs is 21.53 MB.
3,390 context switches/sec3390.0%
Average context switches for all programs is 100 per second.
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 Server 2008 Standard (6.0.6001.65536)
Windows Vista (TM) Home Premium (6.0.6002.131072)
Windows Vista (TM) Ultimate (6.0.6002.131072)
Windows Vista™ Home Premium (6.0.6002.131072)

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: 6.0.6001.18000 (longhorn_rtm.080118-1840)
Product version: 6.0.6001.18000
Size: 19.5 KB
Original file name: perfhost.exe.mui
Windows file protection: Yes

Resource utilization

CPU utilization averages
Total CPU: 0.0000669102%
Privileged CPU: 0.0000275960%
User CPU: 0.00003931422753%
Privileged CPU time: 165517061 ms
Privileged CPU time /min: 0 ms
CPU cycle count: 2,093,811,105
Context switches /sec: 3,390
Memory utilization averages
Committed memory: 66.82 MB
Peak committed memory: 72.16 MB
Paged memory: 5.5 MB
Peak paged memory: 7.43 MB
Paged system memory: 106.35 KB
Non-paged system memory: 17.05 KB
Working set memory: 10.67 MB
Peak working set memory: 13.1 MB
Min working set memory: 7.71 MB
Private memory: 5.5 MB
Page faults: 213,009
Page faults /min: 0
Process I/O averages
Total read operations: 187
Total read transfer: 162.09 KB
Total write operations: 188
Total write transfer: 653.83 KB
Total other operations: 9,254
Total other transfer: 878.12 KB
Handle count average: 202
Thread count average: 7

Process details

Runs as (owner): User
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: 0ed8727ea0172860f47258456c06caea
SHA-1: 6c05fb8b4f7643d07c674cd27b42b777fcb0bffa
SHA-256: 3cdaa1044e412ec4303ceabd36a8c7bada2d6c6692e09b8fe440709e3f4f0166

PE image details

File entropy: 5.57792
File packed: No
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