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Win Service not utilising CPU


Can not start serviceIs one core of an i7 much faster than a Core 2 Duo core at the same clock speed?Impact of the L3 cache on performance - worth a dual-processor system?CPU usage always around 40% because of wait-chain?Windows 8 100% Real CPU Usage by System Idle ProcessNot an experienced user. New (2 months) Sony Vaio running slow as hell. 100% CPU usage, 100% Disk usage, cooling fans at full speed most of the timeSince each CPU's core can process one or two threads at once, how OS stills stable even if there are multiple threads running?Mystery service taking up huge amounts of memory and forcing CPU temperature upWindows 8.1 System process high CPU usage due to ntoskrnl.exe!KeRegisterBugCheckReasonCallback threadFFMPEG multiple outputs performance (Single instance vs Multiple instances)













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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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