System Publishing problems cause slow overall system, and publishing causes overall system

System Publishing problems cause slow overall system, and publishing causes overall system

Implementation feedback: The overall system is slow and has been complained by the customer.

System deployment is roughly as follows: requests are forwarded from F5 to four weblogic nodes, and the four nodes are deployed on two servers respectively. The database is Oracle.

The diagnosis method is as follows:

1. Check the weblogic log and no stuck (BLOCKED) threads are found.

2. Check the database AWR report. The load is very small and there is no problem.

3. Use the front-end diagnostic tool httpwatch to diagnose several functions and find an interesting problem. Action-like requests are always waiting for 3 s. When the system is normal, the login page is within s. The data packets returned by these actions are relatively large, and the firewall is suspected to have restrictions.

4. ping-l 25000 10.140.18.101, found that the customer site is indeed limited, 2.5k data is the critical point.

5. Communicate with the user. The user does not recognize the account. The network restrictions are the same. Why are there no problems with other systems.

6. As a result, it is strange to have single-point access to four weblogic nodes. One node is normal, and other nodes are slow.

7. I decided to replace the code of the node with no performance problems with the node with performance problems. During the code replacement process, I found that the code of other nodes was from a few months ago, during this period, the number of increments has been increased multiple times.

Conclusion: The management problem has been found, and the technical problem has not been found yet.

System slowdown

1 The computer will slow down after a long time... Several small remedies
Everyone wants the computer to immediately enter the Windows system without waiting, or the system will not get slower and slower, but these aspirations are often unable to be fulfilled for various reasons, even when the server crashes or is used, it is getting slower and slower. In fact, sometimes the slow startup speed of Windows is not a problem, but caused by some devices or software. This article analyzes the reasons for slow system speed in three aspects: software, hardware, and viruses, and provides system Acceleration Techniques.

I. Software

1. Set virtual memory

There is a big data exchange file in the hard disk, which is reserved by the system for the virtual memory for temporary storage, and is often used by many applications, therefore, the system often needs to perform a large amount of data access to the primary storage. Therefore, the speed of accessing this file constitutes a very important factor affecting the speed of the computer! In Windows, virtual memory is automatically managed by the system, which automatically adjusts the size of swap files based on the needs of different programs. However, increasing or downgrading this will cause additional burden on the system, this slows down system operations! As you can see, it is recommended that you customize the minimum and maximum values of the virtual memory to avoid frequent resizing. To set the virtual memory, right-click "my computer" and select "properties". In the "performance" dialog box in the "advanced" option, set "Virtual Memory.

2. Permanently delete the program

We all know that if you want to delete some programs, you can perform operations in "Add/delete programs", but you do not know that it will only help you delete programs, but will not help you delete the registration code of the program and some login projects? To completely delete the program, find some "professional" software to delete it! The nortonuninstall produced by symantec has stopped selling some software because it has damaged the copyright of some deleted software. Therefore, symantec has made cleansweep, but in terms of functionality, or nortonuninstall is a better chance! To put it bluntly, in addition to the two software, there are many similar software that can effectively Delete the program.

3. Check the application software or driver

Some programs will slow down the system when the computer system starts up. If this is the reason, we can start it in "security mode. Because this is the original startup, "safe mode" is slower than normal running. However, if you use "safe mode" to start and find that the computer starts faster than normal, a program may be the cause of slow system startup.

4. Too many desktop icons

Too many icons on the desktop can reduce the system startup speed. Every Time Windows starts and displays the desktop, you need to find and load the Desktop shortcuts one by one. The more icons, the more time it takes. At the same time, some anti-virus software provides the system startup scanning function, which will take a lot of time. In fact, if you have enabled the real-time monitoring function of anti-virus software, scanning the system at startup seems redundant. disable this function! We recommend that you put unused desktop icons in a dedicated folder or simply delete them!

5. Slow system startup caused by ADSL

By default, Windows XP performs a self-check on network devices such as the NIC when it is started. If the nic ip address is not configured properly, it is set, this may be the real cause of slow system startup. In this case, you can open the "local connection" attribute menu and double-click "Internet Protocol" in the "General" item to open the "TCP/IP attribute" menu. Configure the IP address of the network adapter as an unused value in the public network (the default gateway is 192.168.1.1), for example, 192.168.1.X. The value of X is between 2 and 2 ~ The value between 255 and the subnet mask is set to 255.255.255.0. The default gateway and DNS can be set by default.
6. Influence of fonts on speed

Although Microsoft claims that the Windows operating system can install 1000 ~ 1500 types of fonts, but in fact, when you install more than 500 types of fonts, problems will occur, such as: font ...... remaining full text>

Hard Disk problems can also cause system slowdown

As a professional data recovery engineer, it is recommended that you replace the hard disk. It has nearly reached the service life. In this case, it is a natural aging and will definitely affect your system operation and data reading and writing, we also need to remind you that it is best to back up important data and not store it on this hard disk.