在C＃（.NET）图表控件使用的CPU吨 [英] Chart Control in C# (.NET) Uses Tons of CPU

问题描述

我使用的是FastLineChart在C＃中显示的实时外部设备的信号。采样率约为为700Hz。在我的节目，我下采样到100Hz左右，以尽量减少不必要的分辨率的显示，但仍使用太多的CPU这样做。

I am using a FastLineChart in C# to display a signal from an external device in real time. The sample rate is about 700Hz. In my program I down-sample to about 100Hz to minimize unnecessary resolution for the display, but still use way too much CPU doing this.

我觉得问题是，我的滚动数据在图表（如CPU图确实在Windows中），这是吃了资源。我这样做删除最旧的元件，然后添加一个新的具体系列（如下所示）。

I think the problem is that I am scrolling the data across the chart (like the CPU graph does in windows) and this is eating up resources. I do this by removing the oldest element and then adding a new one to the specific series (as shown below).

timeGraph.Series[0].Points.RemoveAt(0);
timeGraph.Series[0].Points.AddY(average);

CPU负载为30％左右，我认为是一个有点太高。我没有最新的电脑，但它是一个code 2双核与GT9600显卡。

The CPU load is about 30% which I think is a bit too high. I do not have the newest computer, but it is a Code 2 Duo with GT9600 graphics card.

有没有人有什么建议？有没有更好的办法做到这一点？或者一种特定的方式，使这个更快？

Does anyone have any suggestions? Is there a better way to do this? Or a specific way to make this faster?

感谢您的帮助！

推荐答案

好了，老回答的问题，但我坚持类似这样的年龄的一个问题，所以对于任何人谁发现这一点：

Ok, so old question to answer, but i was stuck with a problem similar to this for ages, so for anyone who finds this:

要停止大规模的CPU占用率：

To stop the massive CPU usage:

1）声明一个整数

int graphUdate = 0;

2）form_负荷，增加

2) in form_ load, add

chart1.Series.SuspendUpdates();

3）添加一个点到你的图形时，使用

3) when adding a point to your graph, use

graphUpdate++;

4）在同一个空间，更新图中每个＃点数和复位graphUpdate

4) in the same space, update the graph every # number of points and reset graphUpdate

if (graphUpdate == #)
            {
                chart1.Series.ResumeUpdates();
                chart1.Series.Invalidate();
                chart1.Series.SuspendUpdates();
                graphUpdate = 0;
            }

该更新）自从上次chart1.Series.SuspendUpdates（收集了所有点;

this updates all point gathered since the last chart1.Series.SuspendUpdates();

去除点也将暂停，作出了重大差异的CPU使用率。

the removal of points will also be suspended, making a MAJOR difference to CPU usage.

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