![w3wp.exe' (IIS Worker Process) process CPU is 99% - Controller client slow, and often says "Not Responding" - caused by importing unusually large (corrupt) CSV file w3wp.exe' (IIS Worker Process) process CPU is 99% - Controller client slow, and often says "Not Responding" - caused by importing unusually large (corrupt) CSV file](https://www.ibm.com/support/pages/system/files/inline-images/image-20190215144429-3.png)
w3wp.exe' (IIS Worker Process) process CPU is 99% - Controller client slow, and often says "Not Responding" - caused by importing unusually large (corrupt) CSV file
![asp.net - a worker process with process id of serving application pool has requested a recycle iis 8 - Stack Overflow asp.net - a worker process with process id of serving application pool has requested a recycle iis 8 - Stack Overflow](https://i.stack.imgur.com/84KLG.png)
asp.net - a worker process with process id of serving application pool has requested a recycle iis 8 - Stack Overflow
![windows server 2008 r2 - High CPU usage of IIS process (w3wp.exe) because of many slow clr.dll!CopyPDBs - Server Fault windows server 2008 r2 - High CPU usage of IIS process (w3wp.exe) because of many slow clr.dll!CopyPDBs - Server Fault](https://i.stack.imgur.com/hkhDs.png)
windows server 2008 r2 - High CPU usage of IIS process (w3wp.exe) because of many slow clr.dll!CopyPDBs - Server Fault
![Net Core Host process High CPU usage in Windows 2016 IIS in Asp.Net Core 2.2 Application - Stack Overflow Net Core Host process High CPU usage in Windows 2016 IIS in Asp.Net Core 2.2 Application - Stack Overflow](https://i.stack.imgur.com/ywubO.png)
Net Core Host process High CPU usage in Windows 2016 IIS in Asp.Net Core 2.2 Application - Stack Overflow
![w3wp.exe' (IIS Worker Process) process CPU is 99% - Controller client slow, and often says "Not Responding" - caused by importing unusually large (corrupt) CSV file w3wp.exe' (IIS Worker Process) process CPU is 99% - Controller client slow, and often says "Not Responding" - caused by importing unusually large (corrupt) CSV file](https://www.ibm.com/support/pages/system/files/inline-images/image-20190215144203-2.png)