Performance bottleneck of the laptop

Today, we will not talk about software.

This article provides some suggestions for beginners to buy products.

Recently, Scott Guthrie's hard drive speed and Visual Studio performance talked about the relationship between development tools and hard disks. I am also deeply touched on this part, so I will give a little bit of my opinion.

A long time ago, when I was buying Nb, I had a profound experience that the size of Ram and the speed of harddisk are actually a key to performance. As for the CPU speed, it has no significant impact, the main reason is simple: "Your bottleneck is not on the CPU !!!"

Thanks to Gao delat, the author of the book "goal", for a long time ago, I have tried and tested it on various occasions: "solving problems begins with bottlenecks ." No matter how complicated the problem is, all the problems can be summarized into one or two focal points. This is your bottleneck (most of which is true for projects). When things are chaotic, identifying bottlenecks is more important than anything else.

However, the speed bottleneck between Nb and general pcs is not at the CPU speed, or even the CPU is idle in many cases. If you find that your hard drive lights flash, you can probably know that your hard disk is best converted to 7200 RPM (or you can choose a buffer larger). When I buy Nb, I will match the 7200 RPM speed. In addition, it is the size of Ram. Due to the operating logic of the operating system, when the memory is insufficient, HD will be used as the virtual memory, and you will start to see the hard disk flash. At this time, it will seriously slow down the entire system operation speed.

The last small key lies in the speed of the video card (including the size of the ram of the video card). I used to think this is not important, but after replacing it with the Nb of the independent video card, I found that the performance of the graphics card (not to mention Vista) is often used in windows. If your graphics card is not independent, will grab the master CPU time or the main memory, the overall speed will naturally be poor.

The last step is the computing power of the CPU. The average server is actually not stuck in the computing power of the CPU, which is very strange, the reason is that computing is the most important capability of computers, but it is clear that the demand for computing is not high for ordinary people. Data access and search are more demanding, so the speed bottleneck begins to change to the access capability of HD and even network...

In short, sometimes you see that the computer does not respond. In, the CPU is not computing, but waiting for the surrounding CPU... but the surrounding speed is too slow...

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