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Open task manager.<br />
go to process.<br />
set priority (of the process)<br />
<a href="http://www.addictivetips.com/windows-tips/tune-up-your-windows-7-by-changing-the-process-priorities/" rel="ugc">http://www.addictivetips.com/windows-tips/tune-up-your-windows-7-by-changing-the-process-priorities/</a>
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A single-threaded process with any priority can consume 100% of CPU time on one core.<br />
<br />
When you have two processes, one with higher priority than the other, that would both consume 100% CPU time on their own, executing simultaneously, the one with higher priority will get all of the CPU time (assuming a single core) and the one with lower priority will not progress at all.<br />
<br />
The priority of a process is simply used to determine the order in which the scheduler will &quot;hand out&quot; CPU time slices to processes.<br />
<br />
The other thing you can do is by increasing the priority of Process<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-39901180-1"><span> System.Diagnostics.Process.GetCurrentProcess().PriorityClass = System.Diagnostics.ProcessPriorityClass.RealTime</span>
</code></pre>
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Thanks, but it's not that easy. <br />
<br />
I have set the priority to high, but the CPU allocated is still only 25%. The PC I am now testing on has a 4 threaded CPU. I belive there is a setting somewhere restricting a background tread to only have the same CPU % as one thread can deliver.<br />
<br />
Any ideas?
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Thanks Naman Goel for the second reply, but what is the difference compared to what Michael-Best sayes? <br />
<br />
Using System.Diagnostics.Process<wbr />.GetCurren<wbr />tProcess()<wbr />.PriorityC<wbr />lass = System.Diagnostics.Process<wbr />PriorityCl<wbr />ass.RealTi<wbr />me is something you specify inside the VB.NET code I asume? It will stille be the same as setting it in the Task Manager, or is it not?<br />
<br />
Anyway I was not alowed to set the priority to Real-Time in the Task manager, it defaulted to High.<br />
<br />
Are you absolutly certain it can be solved by just increasing the priority only?
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Background threads do not have lower priority. The difference between foreground and background threads is that the CLR will shutdown the process once no more foreground threads are running. Thread pool threads are background threads. <br />
<br />
&nbsp;thread.Priority = ThreadPriority.AboveNormal<wbr />
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That should be because it will increase the priority of your process above other process. But still it all depends on your logic that is running on Thread, if you are using sleep and all then anyways it will not consume much CPU. <br />
<br />
A logic like simple while loop will consume maximum CPU Time as it doesn't have to wait for IP or other task.
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Please find my background tread enclosed.<br />
<br />
It does not wait for anything. It is only comparing values as fast as it can that are already in memmory. It does write some staus info on the screen controled by the forground task, but that is only ocasionally. And keep in mind the CPU is alwayes 25% and that is all the PC does. There is a restriction enforeced somewhere.<br />
<br />
I will test out setting the priority in the code as suggested and rerun a recompiled version.<br />
<a href="https://filedb.experts-exchange.com/incoming/2014/03_w10/837914/DClass.txt" target="_blank" class="file-inline" title="Background task code (26 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>DClass.txt</a>
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DClass.txt

<div>
I have tried both System.Diagnostics.Process<wbr />.GetCurren<wbr />tProcess()<wbr />.PriorityC<wbr />lass = System.Diagnostics.Process<wbr />PriorityCl<wbr />ass.RealTi<wbr />me &amp;&nbsp;thread.Priority = ThreadPriority.AboveNormal<wbr />, but it has no effect.<br />
<br />
Am I doing something wrong here? <br />
Where and how should these parameters be set?
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<div>
<div class="content wysiwyg-content">
Hi<br />
<br />
I have a VB.NET application that starts a background task defined as a &nbsp;System.Threading.Thread. The background task is only analysing data that is already in memory, but it may take hours to finish. When I look at the CPU utilisation it never seams to get more that 50% CPU (only one thread) even if the rest is free. On PC's with a 4 threaded CPU it is often as low as 25%.<br />
<br />
Is it possible to adjust this so that the background task gets all (or at least a lot more than 50%) of the CPU and run it as a low priority task?<br />
<br />
I have looked around and there seams to be possible to control this from both inside the application and directly within Windows, but what is the best way to control this?<br />
<br />
Does anyone know how to configure this?
</div>
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Hi

I have a VB.NET application that starts a background task defined as a  System.Threading.Thread. The background task is only analysing data that is already in memory, but it may take hours to finish. When I look at the CPU utilisation it never seams to get more that 50% CPU (only one thread) even if the rest is free. On PC's with a 4 threaded CPU it is often as low as 25%.

Is it possible to adjust this so that the background task gets all (or at least a lot more than 50%) of the CPU and run it as a low priority task?

I have looked around and there seams to be possible to control this from both inside the application and directly within Windows, but what is the best way to control this?

Does anyone know how to configure this?

Running a background task with max CPU.

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