Why does my Hyper V host show more CPU usage with 2. Windows 1. 0Q. My Windows 1. Windows Server 2. Hyper V host shows more CPU usage than under previous versions. Why A. When looking at host CPU using Task Manager prior to Windows Server 2. CPU usage of VMs did not show which could sometimes confuse users. In Windows Server 2. Windows 1. 0 this has changed so the CPU usage by VMs will now also show when looking at CPU usage via Task Manager. This will make the CPU appear higher in Windows 1. Does anyone know how to fix issue with TrustedInstaller. CPU Operating system Windows 2008 x64 Windows Modules Installer service is set. I am using Windows Server 2008 R2 Enterprise with IIS 7. ASP. NET MVC 5 applications. Ive noticed lately that one of the w3wp. CPUarithmetic.png' alt='Cpu Usage Test Windows 7' title='Cpu Usage Test Windows 7' />Server 2. VM CPU use as well. Below is an example showing 4 cores peaked which are actually being consumed by a VM with 4 v. CPUs running a CPU consumption test utility. Misc/Chp_6_1.5.jpg' alt='Cpu Usage Test Windows 7' title='Cpu Usage Test Windows 7' />Troubleshoot High CPU usage by the System process. To diag the CPU usage issues, you should use Event Tracing for Windows ETW to capture CPU Sampling data Profile. To capture the data, install the Windows Performance Toolkit, which is part of the Windows SDK. The Windows 1. 0 WPT can be used on Windows 8Server 2. Windows 8. 1Server 2. R2 and Windows 1. Server 2. 01. 6. If you still use Windows 7, use the SDKWPT with Build 1. Now run WPRUI. exe, select First Level, under Resource select CPU usage and click on start. Now capture 1 minute of the CPU usage. After 1 minute click on Save. I would personally uninstall Norton360 and test if the issue remains. Speed Test is free and is the only real maximum Bandwidth meter. BES Battle Encoder Shirase 1. Windows 7XP2000. Free software that controls perprocess CPU usage an active software CPU cooler. Q. My Windows 10Windows Server 2016 HyperV host shows more CPU usage than under previous versions. Why A. When looking at host CPU using Task Manager. Must have All CPU Meter gadget work with Windows 8 and Windows 7. All FreeNow analyze the generated ETL file with the Windows Performance Analyzer by drag drop the CPU Usage sampled graph to the analysis pane and order the colums like you see in the picture Inside WPA, load the debug symbols and expand Stack of the SYSTEM process. In this demo, the CPU usage comes from the n. VIDIA driver. In the following demo the CPU usage comes from the Realtek NIC driver When you see calls like ntoskrnl. Vi. Ke. Trim. Worker. Thread. Routine, ntoskrnl. Mm. Verifier. Trim. Memory, ntoskrnl. Verifier. Ke. Leave. Critical. Region this means you have Driver Verifier enabled. This also hurts performance a lot and causes high SYSTEM usage. Disable Driver Verifier and reboot. In this demo the driver iai. Intel Serial IO GPIO Controller driver causes it In this example the CPU usage comes from the file rtsuvc. Realtek UVC webcam Driver. This demo shows that Bitdefender driver ignis. In the following example, the CPU usage is casued by the broadcom network driver bcmwl. When you see ntoskrnl. Mi. Zero. Worker. Pages as cause, it is trickier. This means the function of the kernel which zeros the memory before it can be used again causes the high CPU usage There is no real way to detect which process causes it, but I know that CHrome can cause it if you have hardware acceleration enabled in Chrome. So if you see this and use Chrome, turn HW acceleration in Chrome off. When you see those ntoskrnl. Rtlp. Generic. Random. Pattern. Worker, ntoskrnl. Rtlp. Test. Memory. Random. Up callsthe CPU usage comes from the Kernel to test memory for issues memtest. This usage is triggered via the idle maintenance task of Windows 8. You can use Task Scheduler to disable the idle task. In this case, the CPU usage seams to come from the Data Deduplication Feature dedup. Ddp. Post. Create of Windows Server In this demo, the CPU usage is caused by the WIFI card driver athrx. Search for a driver update if you see this. In the following demo a citrix driver is involved So contact your IT how to solve Citrix issues. In this demo the function usbhub. Usbh. Port. Recycle causes the CPU usage Changing USB2. USB drives to other USB 2. In this case a small amount of SYSTEM usage comes from the Acronis driver tdrpm. In this demo the CPU usage ntoskrnl. Ke. Acquire. Spin. Lock. Raise. To. Dpc and ntoskrnl. Ke. Release. Spin. Lock. so a driver is using Spin. Locks very heavily. Disable some devicesdrivers until you see one which causes it. In this case, the CPU usage is caused by the driver L1. C6. 2x. 64. sys. This is the qualcomm atheros AR8. PCI E gigabit Ethernet driver. So update the driver if you see it in the stack. Here the CPU usage comes from scanning the host file netbt. Delayed. Scan. Lm. Host. Filemake sure your hosts file is not too large to avoid this usage. In this case, the CPU usage comes from SRTSP6. SYS from symantec. Update your used symantec product to lastest version. Here the CPU usgae comes from the AMD GPU driver atikmdag. AMD site and get the latest driver for your AMD card. Here the drivers TMXPFlt. Vsapi. Nt. sys cause the high CPU usage. From what I see those files are part of Trend Micro AV suite. Update the tool or remove it. In this example the CPU usage comes from the function ntoskrnl. Mm. Get. Page. File. Houdini 2 Aquarium Pro. Information. This function gets information about the pagefile. Routine Description. This routine returns information about the currently active paging. Disable the pagefile, reboot and enable it again and look if the fixes it. Also removing Intel services e. Intel Content Protection HECI Service seam to fixed it for an user. Here you can see that the driver Netwtw. Intel Wifi driver calls the function flush. Complete. All. Pending. Flush. Requests and this causes a high CPU usage. Because the debug symbols get loaded the Windows inbox driver is used. Only here we can get debug symbols to see the callstack with the function name flush. Complete. All. Pending. Flush. Requests. Here you should install the latest driver from Intel to fix it. The most complicated case of SYSTEM usage is ACPI. Line, DPCISR, Module, Stack, Count, Process, Weight in view ms, Time. Stamp s, Weight. ACPI. ACPIWorker. Thread, 4. ACPI. sys Restart. Ctxt. Passive, 4. ACPI. sys Insert. Ready. Queue, 4. 02. ACPI. sys Run. Context, 4. Ke. Release. Spin. Lock, 4. 02. 46, 3. Ki. Dpc. Interrupt, 4. Ki. Dispatch. Interrupt. Continue, 4. 02. 46, 3. Kx. Retire. Dpc. List, 4. Ki. Retire. Dpc. List, 4. Ki. Execute. All. Dpcs, 4. 01. 98, 3. ACPI. sys ACPIInterrupt. Dispatch. Event. Dpc, 2. ACPI. sys ACPIGpe. Enable. Disable. Events, 2. ACPI. sys ACPIWrite. Gpe. Enable. Register, 2. Halp. Acpi. Pm. Register. Write, 2. 44. 21, 2. Halp. Acpi. Pm. Register. Write. Port, 2. 41. In a sysinternals topic I listed some advices make sure the CPU doesnt overheat because of dust in the CPU fanupdate or re flash the same BIOSUEFIload default BIOSUEFI settingsmake sure the battery is not damaged, remove battery from notebook or disable the battery in device manager. HDD caddy if you have replaced the DVDBlue Ray Drive with a Caddy to install a SSD next to your old HDDIn the following demo the Intel HD driver igdkmd. Intel HD 6. 30 causes the issue The solution is to update to driver with version of at least. In the following case, the cpu usage of the SYSTEM process is caused by the driver stdriverx. This seams to be an audio streaming driver. So update this softwaredriver is you see this in WPA. If you see a driver called risdxc. SYSTEM that causes the high cpu usage, update the Ricoh PCIe SDXCMMC Host Controller driver or disable the SD card reader in device manager if no driver update fixes it. This SD card reader sames to be buildin to many Lenovo devices.