Multiple processes for a host instance on one server

Hi,
One of the prod environment server memory utilization is getting very high every few days. I searched a bit and found that there are many processes for "BTSNTSvc64.exe" in the task manager. Whenever we restart the host instance a new process is
getting created and the previous process is not getting killed.
This caused multiple processes in task manager and every process is occupying some memory. The process is actually not active but it is creating some bad sectors which is causing the Memory utlization to become high.
I am not able to kill the zombie processes either from Task manager. Server reboot is the option but wanted to know a permanent fix.
Can you please tell me the reason as to why this is happening and also the solution?

How many BizTalk Hosts do you have defined on the system? If you have multiple Hosts defined then you're likely to see one host instance associated with each of the hosts. Each host instance is a service and in the "Task Manager" - Processes you will
see multiple BTSNTSvc64.exe OR BTSNTSvc.exe * 32. This is OK is you have multiple host instances defined on your system (Services MMC will show you BizTalk Service BizTalk Group : BizTalk Host) and BizTalk Administration Console ->BizTalk Group ->Platform
Settings -> Host Instances will also show you the different host instances. Each instance is a multi threaded process running different aspects of the BizTalk Framework/Components. So each process will occupy memory if it is "started". All this is normal
behavior. If you're facing performance issues, you might want to ask the solution designer on their rationale for the number of hosts instances.
So when you stop the service, it does not stop? goes into a non-responsive state? and creates another instance?
Regards.

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