1
I have a job running on the machine in production. This service sometimes gets "stopped" and the easiest solution is to restart the service, and it continues to function as expected. Is there any way I can get this service in a C# and restart it? What’s more, if you can restart it, can you change the service priority and affinity? I need it to run at low priority and only on the third core of the processor. Thank you
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You can try using namespace System.Diagnostics to do the reboot:
foreach(Process proc in Process.GetProcessesByName("nome do processo"))
{
proc.Kill();
}
Process.Start(@"diretório do serviço");
And to change the process priority, use:
foreach(Process proc in Process.GetProcessesByName("nome do processo"))
{
proc.PriorityClass = ProcessPriorityClass.BelowNormal;
}
as to affinity, I saw that using processo.ProcessorAffinity = (IntPtr)1; I’ll keep the process running at one core, but this way it’s only the first one that’s activated, I need it to be the last one. How can I specify this for the ProcessorAffinity?
@ihavenokia Already tried to put 3 instead of 1?
of course, I even put 8 (because here on my machine I have more than on the machine where I need the program), I thought the program did nothing, but then I realized that it selects the core Nr that I put, and I needed the number 1, but the position was 3 (the index should be 2)
@ihavenokia Try to use this: proc.IdealProcessor = 3;
did not work. When I go to task manager it is at the core [0]. And the IdealProcessor is a Thread method, not a process method. Or it will be that over time the program will run at core 3?
@ihavenokia I don’t think so. I really have to admit that I don’t know how to help you in this of changing the core.
0
After some research I was able to do what I wanted. This code takes a process, changes the priority to the lowest, and leaves affinity only to the third core of the CPU
Process[] services = Process.GetProcessesByName("WindowsBusinessService");
try
{
//change priority
services[0].PriorityClass = ProcessPriorityClass.Idle;
//change affinity
services[0].ProcessorAffinity = (IntPtr)0x0008;
}
catch (Exception)
{
Console.WriteLine("ERROR CHANGING PROCESS");
}
A list of codes for switching cores:
0x1 - 0001 - Core0
0x2 - 0010 - Core1
0x3 - 0011 - Core1 & Core0
0x4 - 0100 - Core2
0x5 - 0101 - Core2 & Core0
0x6 - 0110 - Core2 & Core1
0x7 - 0111 - Core2 & Core1 & Core0
0x8 - 1000 - Core3
0x9 - 1001 - Core3 & Core0
0xA - 1010 - Core3 & Core1
0xB - 1011 - Core3 & Core1 & Core0
0xC - 1100 - Core3 & Core2
0xD - 1101 - Core3 & Core2 & Core0
0xE - 1110 - Core3 & Core2 & Core1
0xF - 1111 - Core3 & Core2 & Core1 & Core0
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you may also choose the windows command line: https://superuser.com/questions/620724/changing-windows-process-priority-via-command-line
– Rovann Linhalis
see: https://stackoverflow.com/a/4219923/4713574 and https://msdn.microsoft.com/en-us/library/system.diagnostics.processthread.processoraffinity.aspx?f=255&MSPPError=-2147217396
– Rovann Linhalis