circulated optimization skills must be credible? Computer performance optimization, overclocking, transformation, this is what every DIYER user is pursuing, but many users are "blind" to optimize the computer, even through the "metamorphic" transformation to improve performance, the result is only hypocritical psychology The achievement of "satisfaction", in fact, not only did not improve performance, but took 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 awaken these friends who can make the hardware performance "reborn" through simple optimization, we enumerate 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 changed 2Mb
Deception phenomenon
If you go to the Internet to search casually, the article about ADSL optimization is really a lot. 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, change the "DefaultRcvWindow" to "371712" to 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 before 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. The comparison test speed before and after optimization has not changed in essence, and the speed increase is basically talk. The 6KB/s gap can be counted as a test error. The second trick: no open P4 second-level cache. Deception phenomenon In Windows XP system, 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 "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 word "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 the 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 the user 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.