The latest computer optimization skills tricks reveal the experience and skills

Is the circulated optimization technique necessarily credible?

Computer performance optimization, overclocking, transformation, this is what every DIYER user is pursuing, but many users "blindly optimize the computer, even through the transformation of metamorphosis to improve performance, the result is changed What came back was only a hypocritical psychological achievement. “Satisfaction. In fact, the performance has not only not improved, but it has taken up more resources of the system. In addition, in order to attract more readers, many magazines and websites sometimes publish some optimization techniques that have not been tested and tested. It is useless, and the reader's computer is damaged. In the computer-optimized “mass movement”, the scheme of not reversing frequently occurs frequently. In order to wake up these so-called friends who can make the hardware performance through simple optimization, we have listed several typical performance optimization tricks. For your reference, when you see the optimization method next time, think about it, in case you are fooled.

One of the tricks: ADSL bandwidth 1Mb change 2Mb

Deception phenomenon

If you go to the Internet to search casually, there are really a lot of articles about ADSL optimization. For example, modify the registry, ADSL optimization master can increase the speed of the Internet, even as much as 20%, really have such a good effect?

Deception Analysis

Is Soft Optimization really useful? Of course useful. But from the test we know that the effect is not obvious, to modify the registry optimization ADSL as an example, enter the registry HKEY_LOCAL_MACHINESystemCurrentControlSetServicesVxDMSTCP, and "DefaultRcvWindow" to "ld 371712" can increase the network bandwidth to 2Mb /s. We know that broadband providers provide ADSL 1Mb/s bandwidth speed (theoretical speed), but in fact can not reach this speed, even if the speed is improved by soft optimization, the maximum can only be increased to close to 1Mb, how can I get 2Mb for free? What about speed? With 1Mb of ADSL bandwidth, no matter how you toss it, it is impossible to optimize it to more than 1Mb.

The author conducted a comparative test before and after the modification registration. Before modifying the registry optimization, use FlashGet to open 10 threads to download a 10MB file at a speed of 95KB/s, and after optimization, it only increased by about 0.2K (that is, 95.2K/S). In order to confirm the soft optimization of the trick, the author also used the "ADSL optimization master" to optimize the pre- and post-test (test environment is http://www.linkwan.com/gb/broadmeter/SpeedAuto/), using ADSL optimization master optimization The speed is 113.12K/S, and the optimized speed is reduced to 105.04/S. It seems that it has no effect. Opening the software instead takes up resources and slows down the entire network.

There is no essential change in the speed of comparison test before and after optimization. The speed increase is basically talk. The 6KB/s gap can be counted as a test error.

The second trick: no open P4 secondary cache

The trick is

In Windows XP, the CPU secondary cache is not turned on by default. In order to improve system performance, we can open it by modifying the registry or by using software such as Windows Optimizer. Or run the registry editor, expand the HKEY_LOCAL_MACHINESystemCurrentControlSetControlSessionManagerMemory Management branch, double-click the "SecondLevelDataCace" in the right window, and then directly fill in the secondary cache capacity of the CPU used by the current computer in the pop-up window.

Deception Analysis

Is this really the case? We found the words "Do not change the SecondLevelData

Cache entry in Microsoft's knowledge base. The article pointed out that some third-party data claimed that modifying the value of the SecondLevelDataCache key can improve system performance is not correct. The value of the L2 cache is detected by the operating system and is completely unaffected by the SecondLevelDataCache value.

The so-called Windows XP system requires users to manually open the secondary cache. This is wrong. The Windows XP system reads the secondary cache value of the CPU based on the hardware abstraction layer. The value of SecondLevelDataCache is read only when the read fails, and the default value of 0 of SecondLevelDataCache represents the meaning of the second level cache is 256KB instead of closing. Therefore, the secondary cache of the CPU is turned on at any time, and the user does not need to modify it.