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Win Service not utilising CPU


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There's a CPU-bound Windows service (written in C#) running on a Win Server 2016 (8 core Xeon, 16 GB of RAM). Most of the time, the service does its thing (OCR for ducuments) and uses anywhere between 20% and 100% of the CPU. The service starts separate threads for the CPU-heavy operations.



Every now and then, however, the service starts using very little of the CPU (showing the process uses 0-1% and utilization of the CPU in general is just at 1%). The work finishes eventually, but it takes much longer (e.g. 30 mins instead of 2 mins). The only thing that helps in such a case is a restart of the system. Then the service/process starts using a lot more of the CPU.










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    There's a CPU-bound Windows service (written in C#) running on a Win Server 2016 (8 core Xeon, 16 GB of RAM). Most of the time, the service does its thing (OCR for ducuments) and uses anywhere between 20% and 100% of the CPU. The service starts separate threads for the CPU-heavy operations.



    Every now and then, however, the service starts using very little of the CPU (showing the process uses 0-1% and utilization of the CPU in general is just at 1%). The work finishes eventually, but it takes much longer (e.g. 30 mins instead of 2 mins). The only thing that helps in such a case is a restart of the system. Then the service/process starts using a lot more of the CPU.










    share|improve this question







    New contributor




    JDH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      0












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      0








      There's a CPU-bound Windows service (written in C#) running on a Win Server 2016 (8 core Xeon, 16 GB of RAM). Most of the time, the service does its thing (OCR for ducuments) and uses anywhere between 20% and 100% of the CPU. The service starts separate threads for the CPU-heavy operations.



      Every now and then, however, the service starts using very little of the CPU (showing the process uses 0-1% and utilization of the CPU in general is just at 1%). The work finishes eventually, but it takes much longer (e.g. 30 mins instead of 2 mins). The only thing that helps in such a case is a restart of the system. Then the service/process starts using a lot more of the CPU.










      share|improve this question







      New contributor




      JDH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      There's a CPU-bound Windows service (written in C#) running on a Win Server 2016 (8 core Xeon, 16 GB of RAM). Most of the time, the service does its thing (OCR for ducuments) and uses anywhere between 20% and 100% of the CPU. The service starts separate threads for the CPU-heavy operations.



      Every now and then, however, the service starts using very little of the CPU (showing the process uses 0-1% and utilization of the CPU in general is just at 1%). The work finishes eventually, but it takes much longer (e.g. 30 mins instead of 2 mins). The only thing that helps in such a case is a restart of the system. Then the service/process starts using a lot more of the CPU.







      cpu windows-server-2016 windows-services






      share|improve this question







      New contributor




      JDH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question







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      JDH is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      share|improve this question




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      asked 11 mins ago









      JDHJDH

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      Check out our Code of Conduct.






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